Assessments and Countermeasures on Grain Security in Northeast China
Northeast China is the most potential region of grain yield increase in China in 21st century, and has important and strategic role in guaranteeing national grain security. The paper assesses grain security in northeast China from three aspects including grain supply security, grain structure security and cultivated land. The results show that the proportion of grain output in northeast China to that in the whole country has increased from 11. 5％ to 16. 5％ since 1949. The total grain output and per capita share of grain in northeast China can both meet self-needs, there can provide 30-35 millions ton commodity grain annually, but corn accounts for 90％ of the commodity grain. The half of cultivated land in northeast China can be used to ensure national-grain security through calculating of the minimum area of cultivated land per capita and pressure index of cultivated land. Finally, in coordination with the special problems affecting grain security in northeast China, the paper provide some countermeasures from protecting cultivated land, upgrading low-and medium-yield farmland and improving the mechanism for inspiring farmers growing grains.
Assessment of grain security Pressure index of cultivated land Countermeasrues Northeast China
LIU Wenxin HE Xiuli
Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, P.R.China, 130012
国际会议
China Agriculture System Engineering Society 2010(2010年中国农业系统工程学术年会)
威海
英文
170-177
2010-07-29（万方平台首次上网日期，不代表论文的发表时间）