紫云英与化肥配施对水稻产量和土壤养分含量的影响

为了解紫云英(Astragaius sinicus)氮钾和化肥氮钾有效性的异同，进一步明确等量的紫云英氮钾可否代替等量的化肥氮钾，2009年在河南信阳进行了紫云英与化肥配施试验。结果表明，紫云英和化肥配施可增加水稻（Oryza sativa）生长量和产量，增加土壤有机质含量，提高土壤速效氮、磷、钾含量。与不施肥和紫云英相比，60%化肥氮钾+40%紫云英氮钾处理水稻产量提高28.7%，土壤有机质增加2.1%，土壤速效氮、磷、钾含量分别增加9.3%、12.7%、15.5%。

Effects of application of Chinese milk vetch and fertilizer on rice yield and soil nutrient content

 A field experiment was conducted to determine the effects of application of Chinese milk vetch and fertilizer on rice yield and soil nutrient content in 2009 for understanding the possibility of the same amount N and K from Chinese milk vetch instead of the same amount N and K from chemical fertilizer. This study showed that application of Chinese milk vetch and chemical fertilizer increased the rice yield and the soil organic matter, available N, P and K content. The treatment with 60% chemical N and K fertilizer and 40% Chinese milk vetch performed well, and it increased the rice yield by 28.7% and the soil organic matter, available N, P and K content by 2.1%, 9.3%, 12.7% and 15.5%, respectively.