中国的化肥, 农药使用量零增长行动: 目标, 进展与挑战
金书秦, 周芳 - 资源与生态学报, 2018 - jorae.cn
… 0.5:0.45 with a compound rate of more than 50%, and the crop fertilizer utilization rate shall
be over 35%. The Shandong program identifies vegetables, fruit trees, wheat and corn as the …
be over 35%. The Shandong program identifies vegetables, fruit trees, wheat and corn as the …
[PDF][PDF] 可调窝眼轮式旱直播水稻精量穴施排肥器设计与试验
L Jun, Z Dequan, T Qilei, Y Congyang, W Tingjue… - api.inmateh.eu
… improve the utilization rate of fertilizer, reduce the usage of … The number of sockets is
limited by the distance between the socket-… The test equipment was the JPS-12 type seed-metering …
limited by the distance between the socket-… The test equipment was the JPS-12 type seed-metering …
为印度轻型电动汽车设置电池交换网络的商业计划
古安畢 - 2019 - tdr.lib.ntu.edu.tw
… has forced the government at various levels in India and its … We will learn the tradeoff between
convenience and cost in this … operations in a new city will actually use stage 2 technology. …
convenience and cost in this … operations in a new city will actually use stage 2 technology. …
中文摘要《 产业生态学报》 第20 卷第1 期
李杨, 马磊, 侯天骏, 周杭, 程亚萍… - Journal of Industrial …, 2016 - search.ebscohost.com
… Traditional biofuel feedstocks, such as corn and oil seed, are … between highest- and
lowest-tier users is 26 at the census-block group level, but only 2.2 at the city council district level…
lowest-tier users is 26 at the census-block group level, but only 2.2 at the city council district level…
[PDF][PDF] i JOURNAL OF ECONOMIC ISSUES J 卧Pol. XVIII No. 1 March J984
FG Hayden - 2001 - researchgate.net
… connection among the quadrants can be traced by the use of … and control of the world's seed
germplasm base by a few … -Value lower than just replacement levels and rebuild our topsoil …
germplasm base by a few … -Value lower than just replacement levels and rebuild our topsoil …
The Three Models of China's Agricultural Development: Strengths and Weaknesses of the Administrative, Laissez Faire, and Co-op Approaches (中国农业发展三大 …
PCC Huang - Rural China, 2017 - brill.com
… between the old “open field” agriculture (mainly of grains, but … like agricultural machinery
and improved seeds. In addition, … and does not use farm machinery to nearly the same degree). …
and improved seeds. In addition, … and does not use farm machinery to nearly the same degree). …
[图书][B] 环境科学专业英语教程
马占青 - 2005 - books.google.com
… and how we use remaining … Among the negative trends they bet would continue were:
Rising global temperature; Shrinking amount of cropland per person; Decline in amount of wheat …
Rising global temperature; Shrinking amount of cropland per person; Decline in amount of wheat …