摘要
本文研究了黄土丘陵区草地与农田中营养元素的含量及其迁移情况,结果表明,草地中有机质、全氮、水解氮的含量比农田的高,而有效磷、可交换钾和不可交换钾及微量元素要比农田的低。表明营养物质的迁移主要是从草地到农田。解决这一问题的措施是引种和选育优良牧草品种,增施氮、磷肥,调整氮、磷肥的比例。
The content of nutrition element and its remove in the loess hilly region were studied. Putting forward methods of countereasure. the results obtained are summarized as follows: the content of organic matter and total nitrogen, hydrolyzable nitrogen of the grassland are higher than agricultural land, effective phosphote. exchangeable and nonexchangeable potassium and microelement of the agricultural land are higher than grassland nutrient elements remove from grassland to agricultural land. The countereasures are introducing and selecting fine varieties of grasses, spreading nitrogen and ph(?)sphote and regulating ratio of nitrogen phosphote.
出处
《中国草地》
CSCD
1991年第1期1-4,8,共5页
Grassland of China
