摘要
[目的]提高沿海滩涂土壤肥力，促进农业可持续发展。[方法]在稻田布置了连续3年的冬种紫云英、蚕豆翻压还田，研究水稻－绿肥轮作对滩涂土壤肥力的影响。[结果]与冬闲处理相比，绿肥还田能增加土壤有机质，提高土壤碱解氮、速效磷和速效钾含量。经过3年的稻－绿肥轮作，紫云英对土壤肥力的提升效果优于蚕豆，紫云英区土壤有机质和全氮分别提高了16．13％和14．81％。[结论]稻－紫云英轮作是一种较好的轮作模式。
Abstract
Objective] To enhance the soil fertility of mudflat and to promote the sustainable development of agriculture.[Method] Three-year field returning of milk vetch and broad bean on soil fertility was arranged in rice field.Effects of rice-green manure cropping rotation on soil fer-tility of mudflat were researched.[ Result] Compared with winter fallow treatment, returning green manure to field enhanced the organic matter in soil, enhanced the contents of soil alkali-hydrolyzable nitrogen, rapidly-available phosphorus and rapidly available potassium.After three-years rice-green manure rotation, milk vetch showed higher enhancement for soil fertility than broad bean.Soil organic matter content and total nitrogen content in milk vetch area enhanced by 16.13% and 14.81%, respectively.[Conclusion] Rice-green manure cropping rotation is a relatively good rotation mode.
基金项目
上海市农委科技攻关重点课题(沪农科攻字2013第5－9号)
万方数据