{"id":3701,"date":"2024-12-05T14:26:09","date_gmt":"2024-12-05T05:26:09","guid":{"rendered":"https:\/\/www.jcam-agri.co.jp\/wordpress\/?post_type=agriculture_science&p=3701"},"modified":"2026-07-27T17:09:11","modified_gmt":"2026-07-27T08:09:11","slug":"%e7%ac%ac755%e5%8f%b7%e3%80%802023-r05-11%e7%99%ba%e8%a1%8c-2","status":"publish","type":"agriculture_science","link":"https:\/\/www.jcam-agri.co.jp\/en\/agriculture_science\/\u7b2c755\u53f7\u30002023-r05-11\u767a\u884c-2\/","title":{"rendered":"\u7b2c755\u53f7\u30002023(R05).11\u767a\u884c"},"content":{"rendered":"

\u00a7J\u30b3\u30fc\u30c8\u80a5\u6599\u3092\u7528\u3044\u305f\u6c34\u7a32\u306e\u5168\u91cf\u57fa\u80a5\u65bd\u80a5\u3068\u88ab\u8986\u6a39\u8102\u6bbb\u306e\u5d29\u58ca\u6027
Nagano Prefectural Agricultural Experiment Station
\u4e0a\u539f\u3000\u656c\u7fa9
\u5409\u5ddd\u3000\u76f4\u4eba<\/a>
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\u677e\u4e2d\u3000\u7167\u592b<\/a><\/p>\n\n\n\n

\u3000<\/p>\n\n\n\n

\u3000<\/p>\n\n\n\n

\uff2a\u30b3\u30fc\u30c8\u80a5\u6599\u3092\u7528\u3044\u305f\u6c34\u7a32\u306e
\u5168\u91cf\u57fa\u80a5\u65bd\u80a5\u3068\u88ab\u8986\u6a39\u8102\u6bbb\u306e\u5d29\u58ca\u6027<\/h2>\n\n\n\n

Nagano Prefectural Agricultural Experiment Station
\u4e0a\u539f\u3000\u656c\u7fa9
\u5409\u5ddd\u3000\u76f4\u4eba<\/p>\n\n\n\n

Introduction.<\/h3>\n\n\n\n

\u3000In recent years, there has been concern that the resin shells of coated fertilizers (fertilizer with a resin coating to regulate fertilizer efficacy) are leaking out of paddy fields as an environmental problem. Fertilizer manufacturers have been developing resins with improved disintegrating properties for coating fertilizers. On the other hand, we in the agricultural industry are also investigating the amount of residual resin shells flowing out of the field and examining methods to prevent them from flowing out. In this paper, we introduce our study on the nitrogen leaching characteristics, fertilizer effect, and collapsibility of resin shells when rice plants are grown using a coated fertilizer with new resin with enhanced collapsibility from 2019 to 2021.<\/p>\n\n\n\n

Nitrogen leaching characteristics from coated fertilizer<\/h3>\n\n\n\n

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\u3000Fertilizer and soil were placed in non-woven fabric bags and buried in the field soil, and the bags were periodically collected to wash out the fertilizer and analyze the amount of residual nitrogen. The amount of nitrogen remaining in the bag was analyzed by periodically collecting the bag, washing out the fertilizer, and calculating the amount of nitrogen that had decreased since the beginning of the burial as the leaching rate (Figure 1).<\/p>\n\n\n

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\"\"<\/figure><\/div>\n\n\n

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\n
\"\"<\/figure><\/div>\n\n\n

Growth and yield of paddy rice under total basal fertilizer application<\/h3>\n\n\n\n

\u3000\u9577\u91ce\u770c\u306f\u5730\u57df\u306b\u3088\u308a\u6c17\u8c61\u6761\u4ef6\u3084\u54c1\u7a2e\u304c\u7570\u306a\u308a\uff0c\u4e3b\u8981\u54c1\u7a2e\u306e\u30b3\u30b7\u30d2\u30ab\u30ea\u683d\u57f9\u5730\u5e2f\u306b\u304a\u3044\u3066\u306f\uff0c\u4ee5\u524d\u306e\u57fa\u80a5\uff0b\u7a42\u80a5\u306e\u5206\u65bd\u4f53\u7cfb\u306b\u4ee3\u3048\u3066\u901f\u52b9\u6027\uff0b\u88ab\u8986\u80a5\u6599\u306e\u5168\u91cf\u57fa\u80a5\u65bd\u80a5\u304c\u304b\u306a\u308a\u5897\u52a0\u3057\u3066\u3044\u308b\u3002\u5730\u57df\u306b\u3088\u308a\u7a42\u80a5\u91cf\u7b49\u304c\u7570\u306a\u308b\u304c\uff0c\u3053\u306e\u7a92\u7d20\u91cf\u3092\u30b7\u30b0\u30e2\u30a4\u30c9\u578b100\u65e5\u7a0b\u5ea6\u306e\u80a5\u6599\u3067\u4ee3\u66ff\u3057\uff0c\u30ea\u30f3\u9178\uff0c\u52a0\u91cc\u7b49\u3092\u5b9f\u60c5\u306b\u5408\u308f\u305b\u3066\u914d\u5408\u3057\u305f\u5730\u57df\u9298\u67c4\u80a5\u6599\u304c\u6570\u591a\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3002\u683d\u57f9\u8a66\u9a13\u306f\uff0c\u5834\u5185\u5703\u5834\uff08\u9808\u5742\u5e02\uff09\u306b\u304a\u3044\u3066\uff0cLP\u30b3\u30fc\u30c8\uff33100\u3092\u5bfe\u7167\u3068\u3057\u3066\uff2a\u30b3\u30fc\u30c8SE\u3092\u7528\u3044\u3066\u5b9f\u65bd\u3057\u305f\uff08\u8868\uff11)\u3002<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

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\n
\"\"<\/figure><\/div>\n\n\n

\u3000\u6c34\u7a32\u306e\u53ce\u91cf\u8abf\u67fb\u3067\u306f\uff0c\uff2a\u30b3\u30fc\u30c8SE\u533a\u306e\u7cbe\u7384\u7c73\u91cd\u306f\u5bfe\u7167\u306eLP\u30b3\u30fc\u30c8\uff33100\u533a\u3088\u308a\u3084\u3084\u4f4e\u3044\u5e74\u3082\u3042\u3063\u305f\u304c\uff0c\u7d71\u8a08\u51e6\u7406\u306b\u3088\u308b\u6709\u610f\u5dee\u306f\u898b\u3089\u308c\u306a\u304b\u3063\u305f\u3002\u305d\u3057\u3066\uff0c\u3044\u305a\u308c\u3082600kg\/10a\u4ee5\u4e0a\u3092\u53ce\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u305f\u3002\u307e\u305f\uff0c\u53ce\u91cf\u69cb\u6210\u8981\u7d20\u3067\u3082\uff0c\uff2a\u30b3\u30fc\u30c8SE\u533a\u306f\u767b\u719f\u6b69\u5408\u4ee5\u5916\u306b\u306f2020\u5e74\u306e\u901f\u52b9\u5206\u65bd\u533a\u3068\u306e\u6709\u610f\u5dee\u306f\u8a8d\u3081\u3089\u308c\u306a\u304b\u3063\u305f\uff08\u8868\uff13)\u3002<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

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Brown rice quality in full basal application of paddy rice<\/h3>\n\n\n\n

\u3000\u7cbe\u7384\u7c73\u306e\u6574\u7c92\u6b69\u5408\uff0c\u767d\u672a\u719f\u7c92\uff0c\u9752\u672a\u719f\u7c92\u306e\u7c92\u6570\u5272\u5408\u3067\u306f\uff0c\u5e74\u6b21\u3084\u54c1\u8cea\u5224\u5b9a\u6a5f\u5668\u306e\u7a2e\u985e\u306b\u3088\u308b\u5dee\u306f\u3084\u3084\u3042\u3063\u305f\u3082\u306e\u306e\uff0c\uff2a\u30b3\u30fc\u30c8SE\u533a\u306f\u5bfe\u7167\u306eLP\u30b3\u30fc\u30c8\uff33100\u533a\u3068\u540c\u7b49\u306e\u54c1\u8cea\u3067\u3042\u3063\u305f\u3002\u307e\u305f\uff0c\u901f\u52b9\u5206\u65bd\u533a\u3068\u306e\u6bd4\u8f03\u3067\u306f\u3084\u3084\u512a\u308c\u308b\u50be\u5411\u3067\u3042\u3063\u305f\u3002\u7cbe\u7384\u7c73\u306e\u86cb\u767d\u542b\u6709\u7387\u306f\uff0c\u3044\u305a\u308c\u3082\u307b\u307c6.5\uff5e7.0\uff05\uff08\u73fe\u7269\u6c34\u5206\u6761\u4ef6\uff09\u3067\u3042\u308a\uff0c\u8a66\u9a13\u533a\u306b\u3088\u308b\u5dee\u306f\u307b\u3068\u3093\u3069\u8a8d\u3081\u3089\u308c\u306a\u304b\u3063\u305f\uff08\u8868\uff14)\u3002<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

Nitrogen absorption in total basal fertilization of paddy rice<\/h3>\n\n\n\n

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\n
\"\"<\/figure><\/div>\n\n\n

Collapsibility of coated resin shells of J-coat fertilizers<\/h3>\n\n\n\n

\u3000In the first year, fertilizer and soil were placed in non-woven bags and buried in the crop soil in the field in conjunction with rice planting in May 2019, and the coated resin was periodically collected and examined for collapsibility until the harvest season in 2021 (September), two years and four months later. Collapsibility was examined by visual inspection and by the in-sand collapsibility evaluation method, in which the coated resin shell was subjected to a force (Figure 3). The method was developed by ZEN-NOH and conducted by JCAM Agri Co.<\/p>\n\n\n

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\"\"<\/figure><\/div>\n\n\n

\u3000Under the conditions of this test, where the seedlings were buried in the soil, no physical force such as plowing or raking was applied, which is usually done in paddy field operations, and although crushed shells were visually observed, no broken or fragmented shells could be seen until the last survey (Figure 4).<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

\u3000\u4e00\u65b9\uff0c\u7269\u7406\u7684\u306b\u529b\u3092\u52a0\u3048\u308b\u7802\u4e2d\u5d29\u58ca\u6cd5\u306e\u5c3a\u5ea6\u306b\u3088\u308b\u8a55\u4fa1\u3067\u306f\uff0c\uff12\u5e74\u76ee\u306e\u8abf\u67fb\u306b\u304a\u3044\u3066\uff0cLP\u30b3\u30fc\u30c870\uff0cLP\u30b3\u30fc\u30c8\uff33100\u306f\u5d29\u58ca\u7387\uff08\u539f\u578b\u306e\uff12\/\uff13\u4ee5\u4e0a\u306e\u5f62\u3092\u7dad\u6301\u3057\u305f\u7c92\u3092\u9664\u3044\u305f\u7c92\u6570\u5272\u5408\u3067\uff0c\u6570\u5024\u304c\u5927\u304d\u3044\u307b\u3069\u5d29\u58ca\u304c\u9032\u3093\u3067\u3044\u308b\uff09\u304c\uff10\uff05\u3067\u3042\u3063\u305f\u306e\u306b\u5bfe\u3057\uff0c\uff2a\u30b3\u30fc\u30c8\uff2c70\u306f67\uff05\uff0c\uff2a\u30b3\u30fc\u30c8SE\u306f38\uff05\u3067\u3042\u3063\u305f\u3002\u307e\u305f\uff0c\u80a5\u6599\u3092\u56de\u53ce\u5f8c\uff0c\u592a\u967d\u5149\u306b\uff12\u304b\u6708\u9593\u66dd\u9732\uff08\u6c34\u7530\u571f\u58cc\u8868\u9762\u306b\u9732\u51fa\u3057\u3066\u3044\u308b\u6761\u4ef6\u3092\u60f3\u5b9a\uff09\u3057\u305f\u3068\u3053\u308d\uff0cLP\u30b3\u30fc\u30c870\u306f83\uff05\uff0cLP\u30b3\u30fc\u30c8\uff33100\u306f15\uff05\u306b\u4e0a\u6607\u3057\uff0c\u5f93\u6765\u304b\u3089\u793a\u3055\u308c\u3066\u3044\u308b\u7d2b\u5916\u7dda\u306b\u3088\u308b\u5d29\u58ca\u6027\u3082\u8a8d\u3081\u3089\u308c\u305f\u3002\u305d\u3057\u3066\uff0c\uff2a\u30b3\u30fc\u30c8\uff2c70\u3067\u306f\u592a\u967d\u5149\u66dd\u9732\u306793\uff05\uff0c\uff2a\u30b3\u30fc\u30c8SE\u306f58\uff05\u307e\u3067\u5d29\u58ca\u7387\u304c\u5411\u4e0a\u3057\u305f\uff08\u56f3\uff15)\u3002\u306a\u304a\uff0c\u30ea\u30cb\u30a2\u578b\u6eb6\u51fa\u80a5\u6599\u306e\uff2a\u30b3\u30fc\u30c8\uff2c70\u306f\uff0c\u30b7\u30b0\u30e2\u30a4\u30c9\u578b\u6eb6\u51fa\u80a5\u6599\u3088\u308a\u6a39\u8102\u91cf\u304c\u5c11\u306a\u3044\uff08\u539a\u3055\u304c\u8584\u3044\uff09\u305f\u3081\uff0c\u5d29\u58ca\u7387\u304c\u9ad8\u307e\u3063\u305f\u3082\u306e\u3068\u8003\u3048\u3089\u308c\u308b\u3002<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

\u3000\uff2a\u30b3\u30fc\u30c8\u53ca\u3073LP\u30b3\u30fc\u30c8\u80a5\u6599\u306e\u88ab\u8986\u6a39\u8102\u306e\u6bd4\u91cd\u306f1.0\u3088\u308a\u5927\u304d\u3044\u305f\u3081\uff0c\u5e7e\u3064\u304b\u306b\u5272\u308c\u308b\u3068\uff0c\u7a7a\u6c17\u3092\u5b55\u307e\u306a\u3044\u305f\u3081\uff0c\u4ee3\u304b\u304d\u6642\u306b\u7530\u9762\u6c34\u4e2d\u306b\u6c88\u3093\u3067\u6d6e\u904a\u3057\u306a\u3044\u3002\u3053\u308c\u306b\u3088\u308a\uff0c\u7fcc\u5e74\u6625\u307e\u3067\u306b\u80a5\u6599\u306e\u6a39\u8102\u6bbb\u304c\u5b8c\u5168\u306b\u5206\u89e3\u30fb\u6d88\u5931\u3057\u306a\u304f\u3066\u3082\uff0c\u4eee\u306b\uff0c\u7530\u690d\u3048\u524d\u306b\u7530\u9762\u6c34\u304c\u5703\u5834\u5916\u3078\u6d41\u51fa\u3057\u305f\u3068\u3057\u3066\u3082\uff0c\u6bbb\u306e\u6d41\u51fa\u91cf\u306f\u591a\u304f\u306a\u3044\u3068\u8003\u3048\u3089\u308c\u308b\u3002\u3053\u306e\u305f\u3081\uff0c\u5b9f\u969b\u306e\u8015\u8018\u7b49\u306e\u7269\u7406\u7684\u529b\u304c\u52a0\u308f\u3063\u305f\u6761\u4ef6\u3092\u60f3\u5b9a\u3057\u305f\u4eca\u56de\u306e\u5d29\u58ca\u6027\u8a66\u9a13\u7d50\u679c\u304b\u3089\uff0c\uff2a\u30b3\u30fc\u30c8\u306fLP\u30b3\u30fc\u30c8\u3088\u308a\u5d29\u58ca\u7387\u304c\u9ad8\u304f\uff0c\u592a\u967d\u5149\u306b\u3088\u308a\u5d29\u58ca\u7387\u304c\u66f4\u306b\u4fc3\u9032\u3055\u308c\u308b\u3053\u3068\u304c\u793a\u3055\u308c\uff0c\u6c34\u7530\u5916\u3078\u306e\u6d41\u51fa\u91cf\u306e\u8efd\u6e1b\u306b\u6709\u52b9\u3068\u8003\u3048\u3089\u308c\u308b\u3002<\/p>\n\n\n\n

Conclusion<\/h3>\n\n\n\n

\u3000\uff2a\u30b3\u30fc\u30c8\u80a5\u6599\u306f\uff0c\u7a92\u7d20\u6eb6\u51fa\u7279\u6027\u3084\u6c34\u7a32\u306e\u751f\u80b2\uff0c\u53ce\u91cf\u7b49\u306e\u6210\u7e3e\u304b\u3089\uff0c\u65e2\u5b58\u306eLP\u30b3\u30fc\u30c8\u80a5\u6599\u3068\u540c\u69d8\u306b\u6c34\u7a32\u306e\u5168\u91cf\u57fa\u80a5\u65bd\u80a5\u306b\u6709\u671b\u3067\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u305f\u3002\u307e\u305f\uff0c\u88ab\u8986\u6a39\u8102\u6bbb\u306e\u6c34\u7530\u5916\u3078\u306e\u6d41\u51fa\u306b\u95a2\u3057\u3066\u306f\uff0c\u4eca\u5f8c\uff0c\u5d29\u58ca\u3057\u306a\u304b\u3063\u305f\u80a5\u6599\u6bbb\u306b\u5bfe\u3057\u3066\uff0c\u8015\u7a2e\u7684\u306a\uff0c\u7269\u7406\u7684\u306a\u65b9\u6cd5\u306b\u3088\u3063\u3066\u6c34\u7530\u5916\u3078\u306e\u6d41\u51fa\u3092\u9632\u6b62\u3059\u308b\u65b9\u6cd5\u306e\u691c\u8a0e\u304c\u6025\u52d9\u3067\u3042\u308b\u304c\uff0c\u5d29\u58ca\u6027\u304c\u5411\u4e0a\u3057\u305f\uff2a\u30b3\u30fc\u30c8\u80a5\u6599\u3092\u7528\u3044\u308b\u3053\u3068\u306b\u3088\u308a\uff0c\u4e00\u5b9a\u306e\u52b9\u679c\u304c\u3042\u308b\u3068\u8003\u3048\u3089\u308c\u308b\u3002<\/p>\n\n\n\n

\u3000Coated fertilizers are available in a wide range of slow-release rates, with linear and sigmoidal leaching characteristics, and have a temperature dependence that responds to the weather (growth) of the year to some extent. For this reason, various fertilizer application methods have been developed for rice and many other crops as stable fertilizer with regulated efficacy, contributing greatly to labor saving and cost reduction. By solving the problem of fertilizer shell runoff, which is currently being faced, it is expected to become more widely used in the future.<\/p>\n\n\n\n

\u3000<\/p>\n\n\n\n

\u3000<\/p>\n\n\n\n

No Soil - No. 26 Agriculture and Environmental Issues - Part 1
\u308f\u304c\u56fd\u306e\u7a92\u7d20\u5faa\u74b0\u306e\u554f\u984c\u70b9<\/h2>\n\n\n\n

\u524d \u30b8\u30a7\u30a4\u30ab\u30e0\u30a2\u30b0\u30ea\u682a\u5f0f\u4f1a\u793e
\u5317\u6d77\u9053\u652f\u5e97\u3000\u6280\u8853\u9867\u554f
\u677e\u4e2d\u3000\u7167\u592b<\/p>\n\n\n\n

\u3000The beginning of agriculture was the first human challenge to nature. In the sense of adding human intervention to the natural environment, it can be said to be the beginning of environmental destruction. Later, after the Industrial Revolution, human activities became so active that they altered the natural environment. Agriculture is no exception.<\/p>\n\n\n\n

\u3000In many countries today, environmental pollution originating from agriculture is a problem. When the amount of nutrients applied to agricultural land exceeds the nutrient holding capacity of the soil, the excess nutrients flow into the groundwater, rivers, and air in the surrounding environment, causing environmental pollution. This month, we will consider the relationship between agriculture and environmental pollution.<\/p>\n\n\n\n

\u3000The first issue is unique to our country, which has a low food self-sufficiency rate.<\/p>\n\n\n\n

Changes in Japan's food self-sufficiency rate<\/h3>\n\n\n\n

\u3000In 1960, the Japanese government made two major cabinet decisions. The first was to accelerate economic growth through the Income Doubling Plan, and the second was to enact the Basic Agricultural Law. In 1960, Japan's food self-sufficiency rate (hereafter referred to as the calorie-based total calorific value of food supply) was 79%. Since then, however, Japan's food self-sufficiency rate has continued to decline, stagnating at 38 to 39% since 2010. The target for food self-sufficiency is 45% by 2030. Achievement of this goal is in jeopardy.<\/p>\n\n\n\n

\u3000\u904e\u53bb60\u5e74\u9593\u306b\u308f\u305f\u3063\u3066\u308f\u304c\u56fd\u306e\u98df\u6599\u81ea\u7d66\u7387\u3092\u4f4e\u4e0b\u3055\u305b\u305f\u4e3b\u306a\u8981\u56e0\u306f\uff0c\u98df\u6599\u3092\u56fd\u5185\u3067\u307e\u304b\u306a\u3046\u3068\u3044\u3046\u57fa\u672c\u59ff\u52e2\u304c\u7dad\u6301\u3055\u308c\u306a\u304b\u3063\u305f\u3053\u3068\uff0c\u3055\u3089\u306b\u98df\u6599\u306e\u6d88\u8cbb\u5f62\u614b\u304c\u5909\u5316\u3057\u305f\u3053\u3068\u306b\u3042\u308b\u3002\u4f8b\u3048\u3070\uff0c1965\u5e74\u5ea6\u30682021\u5e74\u5ea6\u306e56\u5e74\u9593\u3067\u6bd4\u8f03\u3059\u308b\u3068\uff0c\uff11\u4eba\uff11\u65e5\u5f53\u305f\u308a\u306e\u5404\u54c1\u76ee\u306e\u4f9b\u7d66\u71b1\u91cf\u3092\u5408\u8a08\u3057\u305f\u7dcf\u4f9b\u7d66\u71b1\u91cf\u306f\uff0c1965\u5e74\u5ea6\u304c2,459kcal\u3067\uff0c2021\u5e74\u5ea6\u306f\u3084\u3084\u5c11\u306a\u304f\u306a\u3063\u30662,256kcal\u3060\u3063\u305f\uff08\u56f3\uff11)\u3002<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

\u3000\u3068\u3053\u308d\u304c\uff0c\u3053\u306e56\u5e74\u9593\u3067\u7c73\u306e\u6d88\u8cbb\u306f\u5927\u304d\u304f\u6e1b\u5c11\u3057\uff08\u4f9b\u7d66\u71b1\u91cf\u306e\u6e1b\u5c11)\uff0c\u305d\u306e\u6e1b\u5c11\u306f\u755c\u7523\u7269\uff08\u8089\u985e\uff0c\u9d8f\u5375\uff0c\u4e73\u88fd\u54c1\u306a\u3069\uff09\u3068\u6cb9\u8102\u985e\uff08\u5927\u8c46\u6cb9\uff0c\u83dc\u7a2e\u6cb9\u306a\u3069\uff09\u306e\u6d88\u8cbb\u62e1\u5927\uff08\u4f9b\u7d66\u71b1\u91cf\u306e\u5897\u52a0\uff09\u3067\u76f8\u6bba\u3055\u308c\u3066\u3044\u308b\uff08\u56f3\uff11)\u3002\u3055\u3089\u306b\uff0c\u7dcf\u4f9b\u7d66\u71b1\u91cf\u306b\u5360\u3081\u308b\u5272\u5408\u306f56\u5e74\u9593\u3067\u5927\u304d\u306a\u5909\u5316\u304c\u306a\u3044\u306b\u3082\u304b\u304b\u308f\u3089\u305a\uff0c\u4f9b\u7d66\u71b1\u91cf\u306e\u81ea\u7d66\u7387\u304c\u5927\u304d\u304f\u4f4e\u4e0b\u3057\u305f\u54c1\u76ee\u3068\u3057\u3066\u679c\u5b9f\uff0c\u9b5a\u4ecb\u985e\uff0c\u5c0f\u9ea6\uff0c\u5927\u8c46\uff0c\u91ce\u83dc\uff0c\u305d\u3057\u3066\u300c\u305d\u306e\u4ed6\u300d\u306b\u533a\u5206\u3055\u308c\u308b\u54c1\u76ee\u304c\u3042\u308b\uff08\u56f3\uff11)\u3002<\/p>\n\n\n\n

\u3000\u3053\u3046\u3057\u305f\u98df\u6599\u306e\u6d88\u8cbb\u5f62\u614b\u306e\u5909\u5316\u3084\u54c1\u76ee\u5225\u306e\u81ea\u7d66\u7387\u306e\u4f4e\u4e0b\u306f\uff0c\u56fd\u6c11\u306e\u98df\u50be\u5411\u304c\u3054\u306f\u3093\u3068\u9b5a\u3068\u3044\u3046\u300c\u548c\u98a8\u300d\u304b\u3089\uff0c\u30d1\u30f3\u3084\u30d1\u30b9\u30bf\uff0c\u4e73\u8089\u88fd\u54c1\u3068\u3044\u3046\u300c\u6d0b\u98a8\u300d\u3078\u5909\u5316\u3057\u305f\u3053\u3068\u306b\u8d77\u56e0\u3059\u308b\u3002\u305f\u3060\u3057\uff0c\u3053\u306e\u98df\u6599\u306e\u6d88\u8cbb\u5f62\u614b\u306e\u5909\u5316\u306f\uff0c\u305d\u308c\u304c\u56fd\u6c11\u306e\u5358\u306a\u308b\u55dc\u597d\u306e\u5909\u5316\u3084\uff0c\u6240\u5f97\u306e\u5897\u52a0\u3068\u3044\u3063\u305f\u300c\u6210\u308a\u884c\u304d\u300d\u306e\u7d50\u679c\u3068\u306f\u8003\u3048\u306b\u304f\u3044\u3002\u3080\u3057\u308d\uff0c\u7b2c\u4e8c\u6b21\u4e16\u754c\u5927\u6226\u5f8c\u306e\u30a2\u30e1\u30ea\u30ab\u306e\u4f59\u5270\u8fb2\u7523\u7269\u8f38\u51fa\u6226\u7565\u306b\u547c\u5fdc\u3057\u305f\uff0c\u308f\u304c\u56fd\u306e\u653f\u7b56\u7684\u8a98\u5c0e\u306e\u7d50\u679c\u3068\u898b\u308b\u3079\u304d\u3060\u308d\u3046\uff08\u67cf\uff0c2012)\u3002<\/p>\n\n\n\n

Food production, consumption and nitrogen cycle in Japan<\/h3>\n\n\n\n

\u3000\u98df\u6599\u81ea\u7d66\u7387\u306e\u4f4e\u3055\u306f\uff0c\u3044\u3044\u304b\u3048\u308b\u3068\u5916\u56fd\u306e\u571f\u306b\u3042\u3063\u305f\u990a\u5206\u304c\u4f5c\u7269\u306b\u5438\u53ce\u3055\u308c\uff0c\u305d\u308c\u304c\u542b\u307e\u308c\u305f\u307e\u307e\u8f38\u5165\u98df\u6599\u3068\u306a\u3063\u3066\u591a\u91cf\u306b\u308f\u304c\u56fd\u306b\u6301\u3061\u8fbc\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u610f\u5473\u3059\u308b\u3002\u306a\u304b\u3067\u3082\u7a92\u7d20\uff08\uff2e\uff09\u306f\uff0c\u6b21\u56de\u3067\u8ff0\u3079\u308b\u3088\u3046\u306b\uff0c\u74b0\u5883\u306b\u60aa\u5f71\u97ff\u3092\u4e0e\u3048\u3084\u3059\u3044\u3002\u305d\u306e\u308f\u304c\u56fd\u3067\u306eN\u5faa\u74b0\u91cf\u304c\uff0c\u81ea\u7d66\u7387\u306e\u4f4e\u4e0b\u306b\u3088\u3063\u3066\u3069\u3046\u5909\u5316\u3057\u305f\u304b\u3092\uff0c\u30c7\u30fc\u30bf\u304c\u5831\u544a\u3055\u308c\u3066\u3044\u308b1961\u5e74\u30682005\u5e74\u3067\u6bd4\u8f03\u3057\u3066\u307f\u308b\uff08\u56f3\uff12)\u3002<\/p>\n\n\n

\n
\"\"<\/figure><\/div>\n\n\n

(1) N circulating volume in 1961<\/h4>\n\n\n\n

\u3000\u98df\u6599\u81ea\u7d66\u7387\u304c78\uff05\u3060\u3063\u305f1961\u5e74\uff0c\u8f38\u5165\u3055\u308c\u305fN\u306f\uff0c\u4f5c\u7269\u304b\u308914\u4e07\u30c8\u30f3\uff0c\u30d7\u30ed\u30c6\u30a4\u30f3\u30df\u30fc\u30eb\u304b\u3089\uff12\u4e07\u30c8\u30f3\u3067\uff0c\u5e74\u9593\u308f\u305a\u304b\u306b16\u4e07\u30c8\u30f3\u3060\u3063\u305f\u3002\u4e00\u65b9\uff0c\u8fb2\u8015\u5730\u306b\u4f9b\u7d66\u3055\u308c\u308b\uff2e\u306f\u5316\u5b66\u80a5\u6599\u7531\u6765\uff08\u5e74\u959363\u4e07\u30c8\u30f3\uff09\u304c\u6700\u3082\u591a\u304f\uff0c\u5bb6\u755c\u306e\u3075\u3093\u5c3f\u7531\u6765\u306e\uff2e\uff08\u540c16\u4e07\u30c8\u30f3\uff09\u306f\uff0c\u751f\u7269\u7684\uff2e\u56fa\u5b9a\u3067\u571f\u306b\u306f\u3044\u308b\u91cf\uff08\u540c22\u4e07\u30c8\u30f3\uff09\u3088\u308a\u5c11\u306a\u304b\u3063\u305f\u3002\u98fc\u990a\u3055\u308c\u3066\u3044\u308b\u5bb6\u755c\u306e\u982d\u6570\u304c\u5c11\u306a\u304b\u3063\u305f\u304b\u3089\u3067\u3042\u308b\u3002\u6700\u7d42\u7684\u306b\uff11\u5e74\u9593\u3067\u5730\u4e0b\u6c34\u3084\u6cb3\u5ddd\u3078\u6d41\u51fa\u3057\u305f\uff2e\u306f\uff0c\u8fb2\u8015\u5730\u304b\u3089\u306e55\u4e07\u30c8\u30f3\u3068\uff0c\u4eba\u9593\u306e\u6392\u6cc4\u7269\uff08\u4e0b\u6c34\u51e6\u7406\u524d\u306e\u5024\uff09\u304b\u3089\u306e38\u4e07\u30c8\u30f3\u306e\u5408\u8a0893\u4e07\u30c8\u30f3\u3060\u3063\u305f\u3002\u3053\u306e\u307b\u304b\u5927\u6c17\u306b\u63ee\u6563\u3057\u305f\uff2e\uff08\u30a2\u30f3\u30e2\u30cb\u30a2\u30ac\u30b9\u3068\u3057\u3066\uff09\u306f\uff0c\u5316\u5b66\u80a5\u6599\u3084\u5bb6\u755c\u3075\u3093\u5c3f\u7531\u6765\u306e\u5408\u8a08\u3067\uff12\u4e07\u30c8\u30f3\u3060\u3063\u305f\u3002<\/p>\n\n\n\n

\u3000(2) Amount of N circulating in 2005<\/h4>\n\n\n\n

\u3000\u3053\u308c\u306b\u5bfe\u3057\u30662005\u5e74\uff0c\u3053\u306e\u5e74\u306e\u4eba\u53e3\u306f1961\u5e74\u3088\u308a35\uff05\u5897\u3048\u3066\uff11\u51042,800\u4e07\u4eba\u306b\u306a\u3063\u305f\u3002\u98df\u6599\u81ea\u7d66\u7387\u306f40\uff05\u306b\u4f4e\u4e0b\u3057\uff0c\u7d50\u679c\u3068\u3057\u3066\u8f38\u5165\uff2e\u91cf\u306e\u5408\u8a08\u306f\uff0c1961\u5e74\u306e5.6\u500d\uff0c89\u4e07\u30c8\u30f3\uff08\u4f5c\u7269\u306e68\u4e07\u30c8\u30f3\uff0c\u30d7\u30ed\u30c6\u30a4\u30f3\u30df\u30fc\u30eb\u306714\u4e07\u30c8\u30f3\uff0c\u755c\u7523\u54c1\u304b\u3089\uff17\u4e07\u30c8\u30f3\uff09\u306b\u5927\u304d\u304f\u5897\u3048\u305f\u3002\u9006\u306b\uff0c\u751f\u7269\u7684\uff2e\u56fa\u5b9a\u3084\u5316\u5b66\u80a5\u6599\uff0c\u4f5c\u7269\u6b8b\u6e23\u3068\u3057\u3066\u8fb2\u8015\u5730\u306b\u306f\u3044\u308b\uff2e\u306f\u6e1b\u3063\u305f\u3002\u56fd\u5185\u306e\u98df\u6599\u751f\u7523\u304c\u6e1b\u3063\u305f\u304b\u3089\u3060\u3002<\/p>\n\n\n\n

\u3000\u6d88\u8cbb\u91cf\u304c\u5897\u3048\u305f\u755c\u7523\u7269\u306f\uff0c\u305d\u306e\u751f\u7523\u3092\u652f\u3048\u308b\u305f\u3081\u306b\u5bb6\u755c\u306e\u98fc\u80b2\u982d\u6570\u3092\u5897\u3084\u3059\u5fc5\u8981\u304c\u3042\u308b\u3002\u5897\u3048\u305f\u5bb6\u755c\u306e\u98fc\u6599\u306f\u8f38\u5165\u306b\u4f9d\u5b58\u3059\u308b\u3002\u3053\u306e\u305f\u3081\uff0c\u8f38\u5165\u3055\u308c\u305f\u98fc\u6599\u306b\u542b\u307e\u308c\u305f\uff2e\u304c\uff0c\u5bb6\u755c\u306e\u3075\u3093\u5c3f\u306b\u306a\u3063\u3066\u8fb2\u8015\u5730\u3078\u6d41\u5165\u3059\u308b\u3002\u305d\u306e\u6d41\u5165\u91cf\u306f2005\u5e74\u306b51\u4e07\u30c8\u30f3\u30021961\u5e74\u306e3.2\u500d\u306b\u5897\u3048\u305f\u3002\u3055\u3089\u306b\uff0c\u4eba\u9593\u306e\u6392\u6cc4\u7269\u7531\u6765\u306e\u6d41\u51fa\uff2e\u91cf\u30821961\u5e74\u306e1.8\u500d\u3060\u3063\u305f\u3002\u3053\u308c\u306f\u4eba\u53e3\u306e\u5897\u52a0\u7387\uff0835\uff05\uff09\u4ee5\u4e0a\u3067\u3042\u308a\uff0c\u98df\u6599\u306e\u9ad8\u30bf\u30f3\u30d1\u30af\u8cea\u5316\u3092\u88cf\u3065\u3051\u3066\u3044\u308b\u3002<\/p>\n\n\n\n

\u3000\u7d50\u679c\u3068\u3057\u3066\uff0c2005\u5e74\u306b\u8fb2\u8015\u5730\u304b\u3089\u5730\u4e0b\u6c34\u3084\u6cb3\u5ddd\u3078\u6d41\u51fa\u3057\u305f\uff2e\u306f\u5e74\u959384\u4e07\u30c8\u30f3\u306b\u5897\u3048\uff0c\u3053\u308c\u306b\u4eba\u9593\u306e\u6392\u6cc4\u7269\u7531\u6765\u3067\u74b0\u5883\u3078\u6d41\u51fa\u3059\u308b67\u4e07\u30c8\u30f3\u3092\u52a0\u3048\u305f\uff0c\u5e74\u9593151\u4e07\u30c8\u30f3\u304c\u5730\u4e0b\u6c34\u3084\u6cb3\u5ddd\u3078\u6d41\u51fa\u3057\u305f\u3068\u63a8\u5b9a\u3055\u308c\u305f\u3002\u3053\u306e\u91cf\u306f1961\u5e74\u306e1.6\u500d\u3067\u3042\u308b\u3002\u307e\u305f\uff0c\u80a5\u6599\u3084\u5bb6\u755c\u3075\u3093\u5c3f\u7531\u6765\u3067\u5927\u6c17\u74b0\u5883\u3078\u30a2\u30f3\u30e2\u30cb\u30a2\u30ac\u30b9\u3068\u3057\u3066\u63ee\u6563\u3057\u305f\uff2e\u91cf\u306f\uff16\u4e07\u30c8\u30f3\u3067\uff0c1961\u5e74\u306e\uff13\u500d\u306b\u306a\u3063\u305f\u3002<\/p>\n\n\n\n

\u3000\u308f\u304c\u56fd\u306e\u4f4e\u3044\u98df\u6599\u81ea\u7d66\u7387\u3068\u98df\u6599\u6d88\u8cbb\u52d5\u5411\u306e\u5909\u5316\u306f\uff0c\u6d77\u5916\u304b\u3089\u6301\u3061\u8fbc\u3080\uff2e\u91cf\u3092\u5927\u304d\u304f\u5897\u3084\u3057\u305f\u3002\u305d\u308c\u304c\u308f\u304c\u56fd\u306e\u5730\u4e0b\u6c34\uff0c\u6cb3\u5ddd\u306a\u3069\u306e\u6c34\u8cea\u6c5a\u6fc1\u3084\uff0c\u5927\u6c17\u74b0\u5883\u306e\u60aa\u5316\u3092\u62db\u304f\u53ef\u80fd\u6027\u306f\u5927\u304d\u3044\uff08Shindo\u3089\uff0c2009)\u3002\u307e\u3055\u306b\u4f4e\u81ea\u7d66\u7387\u3086\u3048\u306e\u554f\u984c\u3067\u3042\u308b\u3002\u6b21\u56de\u306f\uff0c\u3053\u306e\u74b0\u5883\u306b\u6d41\u51fa\u3059\u308b\uff2e\u304c\u5177\u4f53\u7684\u306b\u3069\u306e\u3088\u3046\u306a\u74b0\u5883\u6c5a\u67d3\u6e90\u3068\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u8003\u3048\u308b\u3002<\/p>\n\n\n\n

\u3000\u6b21\u56de\u306f\uff0c\u3053\u306e\u74b0\u5883\u306b\u6d41\u51fa\u3059\u308b\uff2e\u304c\u5177\u4f53\u7684\u306b\u3069\u306e\u3088\u3046\u306a\u74b0\u5883\u6c5a\u67d3\u6e90\u3068\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u8003\u3048\u308b\u3002<\/p>\n\n\n\n

\u3000<\/p>\n\n\n\n

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