南北粮食空间布局逆转对化肥用量的影响

The Effect of the Reversal of the Spatial Layout of the North and South Grains on the Fertilizer Consumption

“北粮南运”是目前我国的发展现状,南北空间生产格局发生重大逆转,对目前的粮食生产安全及化肥用量产生了很大影响。实证发现,稻谷的种植出现北移,北方的种植面积以及产量的提高需要更多投入,主要表现在化肥费用上,每增加667 hm^(2)稻谷的种植,化肥费用以及农膜费用也会相应增加,而这种化肥的过度增加不利于农业持续性发展。

“North grain transport to south”is the current development situation in China.The North-South spatial production pattern has undergone a major reversal,which has had a great impact on the current safety of grain production and the amount of chemical fertilizer.The empirical results showed that the planting of rice moved to the north,and the increase of planting area and yield in the north required more input,which was mainly reflected in the cost of chemical fertilizer.With every 667 hm^(2) increase of rice planting,the cost of chemical fertilizer and agricultural film would also increase accordingly,and the excessive increase of chemical fertilizer was not conducive to the sustainable development of agriculture.