有效供给：中国可持续农业最重要的内容———兼论黑龙江省在全国农业中的地位陈德江现阶段，我国的农业存在一个很怪的现象：一方面认为农业是国民经济发展的基础；而另一方面又出现卖粮难和报酬率递减以及“谷贱伤农”的问题。从目前看，在我国，凡是产粮大省一般都不是... Effective Supply: The Most Important Content of Sustainable Agriculture in China --- Concurrently on the Position of Heilongjiang Province in Agriculture in China CHEN De-jiang At this stage, there is a weird phenomenon in China’s agriculture: on the one hand, agriculture is the basis for the development of the national economy; On the other hand, the problem of selling food and diminishing returns, as well as the problem of “getting low wages and harming farmers” appeared again. From now on, in our country, all major grain-producing provinces are generally not ...