论文部分内容阅读
我国有盐碱地６７０多万ｈｍ２，其中黄淮海平原有１３０万ｈｍ２，占该区耕地面积的５０４％，而且由于不合理灌溉，许多地方还发生了次生盐渍化。该区人口稠密，人均耕地面积低于全国平均水平，因此，科学利用和改造盐碱地一直是广大农民和科技工作者的重任。结合生态...
There are more than 6.7 million hm2 of saline-alkali lands in China, of which 1.3 million hm2 are in the Huang-Huai-Hai Plain, accounting for 50.4% of the cultivated land area in the area. Secondary salinization has also occurred in many places due to irrational irrigation. The densely populated area and the per capita arable land area are below the national average. Therefore, the scientific utilization and transformation of saline-alkali lands has always been the task of vast numbers of peasants and scientists and technicians. Combination of ecology ...