不同秸秆还田方式效果对比研究  

Study on Effect Under Different Straws Incorporation Methods

作　　者：黄仁军 潘明安 袁天泽 袁项成 沈远明 

机构地区：[1]重庆三峡农业科学院,重庆404155

出　　处：《现代农业科技》2012年第20期233-234,共2页Modern Agricultural Science and Technology

基　　金：重庆市科技攻关重点项目(2011GGB265)

摘　　要：采用堆沤还田、粉碎还田和直接还田对玉米秸秆腐解特征和养分释放特征进行了研究。结果表明:经过105 d的腐解,粉碎还田处理下的秸秆74.1%、堆沤还田处理的71.2%、直接还田处理的65.4%被腐解。玉米秸秆的腐解速度为粉碎还田>堆沤还田>直接还田。堆沤还田方式下氮、磷、钾释放率分别为53.6%、90.2%、58.4%;粉碎还田方式下分别为58.7%、95.6%、53.9%;直接还田方式下为49.8%、88.5%、53.3%。作物秸秆磷的释放率最大。Corn straw decomposition and nutrient release characteristics were studied under compost-return,crushing and returning to field and direct return to field.The results indicated that after 105 days of composting,straw decomposition rate of crushing and returning to field,compost-return treatment and return to field directly were 74.1%,71.2%,65.4%,respectively.Corn straw decomposition rate for crushing and returning to fieldcompost-returnreturn to field directly.Under compost-return manner,nitrogen,phosphorus and potassium release rates were 53.6%,90.2%,58.4%,respectively;crushing returning methods were 58.7%,95.6%,53.9%,respectively;direct incorporation methods were 49.8%,88.5%,53.3%,respectively.Phosphorus release rate was the best.

关 键 词：作物秸秆 还田方式 腐解特征 养分释放率 

分 类 号：S141.4[农业科学—肥料学]