粮食自给率是一项评估国家粮食自给程度的指标。粮食自给率，也就是当年粮食产量占当年粮食消费量的比重，来衡量一个国家的粮食安全水平。 一般认为， 一个国家或地区的粮食自给率在100%以上，就是完全自给；在95%—100%之间，属于基本自给；在90%—95% 之间，是可以接受的粮食安全水平；一旦小于90%，粮食供求的风险就会增大。
Location optimization analysis indicates that, "grain security scenario" expand the low grain self-sufficiency rate and weak capacity of the production scale region, "grain policy scenario"expand the high grain self-sufficiency rate and high production ability to regional scale.
区位优化模型实证分析表明，“粮食安全情景”中粮食生产布局要扩大粮食自给率低、生产能力弱的区域的生产规模，“粮补政策情景”中粮食生产布局要扩大粮食自给率高、生产能力强的区域的生产规模。
参考来源 - 中国主要粮食作物生产布局变迁及区位优化研究·2,447,543篇论文数据，部分数据来源于NoteExpress
根据布朗的计算，他说中国的粮食自给率只能到达41%。
Based on his calculations, Mr. Brown suggests that China will only be able to achieve a self-sufficiency rate of 41%.
中国将努力促进粮食增产，使粮食自给率在正常情况下不低于95%。
China endeavors to increase its grain production, its self-sufficiency rate will be above 95 percent under normal conditions.
粮食需求是一个刚性问题，粮食自给率的问题实质是如何提高粮食产量。
Food demand is a rigid problem, the essence of the problem of grain self-sufficient rate is how to increase crop production.
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