<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区

          We have launched E-mail Alert service,subscribers can receive the latest catalogues free of charge

           
           
          You Are Here: Home > Reports

          Analysis on Several Basic Problems of Grain Security (No.77, 2018)

          2018-07-06

          By Zhang Yunhua, Department of Rural Economy, DRC

          Research Report, No.77, 2018 (Total 5352) 2018-5-4

          Abstract: The connotation of grain security is smaller than that of food safety. The essence of grain security is food safety. The core of food safety is grain. Excluding imported soybeans and price-inverted grain imports, China’s real grain self-sufficiency rate is high enough. Considering grain supply and demand, international trade, grain in stock, and comprehensive supply capacity, China should lower the grain self-sufficiency criteria and re-set the self-yield rate and self-sufficiency rate of rations, cereal, grains and others in different levels. During the past 40 years of rural reform, there have been several periods, especially the recent years, when China's grain supply exceeds demand. In 2017, China’s per capita grain output, per capita grain availability (including net imports but excluding soybeans) and per capita grain availability including end-of-year stock, have reached 445 kg, 468 kg, and 637 kg respectively. Since 2010, China's per capita grain (cereal) output has been consistently higher than the global average. This paper proposes to establish the annual per capita grain output of 400 kg as the baseline for grain security regulation, and combine the per capita food availability indicators to formulate food control mechanisms of different levels.

          Key words: grain security, food safety, self-sufficiency rate of grain, per capita grain output, per capita grain availability

           
          主站蜘蛛池模板: 又爆又大又粗又硬又黄的a片| 亚洲天堂男人天堂女人天堂| 国产乱啊有帅gv小太正| jizz国产免费观看| 爱性久久久久久久久| 久久99精品久久久学生| 亚洲香蕉在线| 免费现黄频在线观看国产| 伊人久久精品亚洲午夜| 日韩一区二区三区精品区| 中文字幕亚洲综合第一页| 日韩老熟女av搜索结果| 国产麻豆91网在线看| 亚洲免费视频一区二区三区| 国产精品一久久香蕉产线看 | 亚洲色偷偷偷综合网| 2020国产欧洲精品网站| 亚洲精品色午夜无码专区日韩| 蜜臀午夜一区二区在线播放| 国产精品毛片一区视频播| 在线观看人成视频免费| 性欧美vr高清极品| 国产成人a∨激情视频厨房| 亚洲国产成人久久综合三区| 四虎国产精品久久免费精品| 国产精品午夜福利视频| 亚洲 av 制服| 国产av午夜精品福利| 少妇肉欲系列1000篇| 欧洲熟妇色自偷自拍另类| 国产免费一区二区三区在线观看| 久久夜色精品国产亚av| 亚洲一区二区约美女探花| 日本免费一区二区三区日本| 国产精品国产三级国产a| av无码精品一区二区乱子| 日韩有码中文字幕av| 婷婷狠狠综合五月天| 国产清纯在线一区二区| 日韩精品无码免费专区网站| 翘臀少妇被扒开屁股日出水爆乳|