应用生态学报2011，Vol.22Issue(11)：2913-2918,6.
免耕与秸秆高留茬还田对抛秧稻田土壤酶活性的影响
Effects of no-tillage and stubble-remaining on soil enzyme activities in broadcasting rice seedlings paddy field
摘要
Abstract
A field experiment was conducted to study the effects of four cultivation modes ( conventional tillage, no-tillage, conventional tillage + stubble-remaining, and no-tillage + stubble-remaining) on the activities of urease, acid phosphatase, protease, and cellulose in different soil layers in a broadcasting rice seedlings paddy field. Under the four cultivation modes, the activities of test enzymes were higher in upper than in deeper soil layers, and had a greater difference between the soil layers under no-tillage + stubble-remaining. In upper soil layers, the activities of test enzymes were higher in the treatments of no-tillage than in the treatments of conventional tillage, being the highest under no-tillage + stubble-remaining and the lowest under conventional tillage. In deeper soil layers, the test enzyme activities were the highest under conventional tillage + stubble-remaining, followed by no-tillage + stubble-remaining, no-tillage, and conventional tillage. During the growth period of rice, soil urease and cellulose activities were lower at tillering stage, increased to the maximum at booting stage, and decreased then, soil acid phosphatase activity was higher at tillering stage but lower at elongating stage, whereas soil protease activity peaked at tillering and heading stages.关键词
免耕/留茬/土壤酶/水稻Key words
no-tillage/stubble-remaining/soil enzyme/Oryza sativa L.分类
农业科技引用本文复制引用
任万军,黄云,吴锦秀,刘代银,杨文钰..免耕与秸秆高留茬还田对抛秧稻田土壤酶活性的影响[J].应用生态学报,2011,22(11):2913-2918,6.基金项目
国家粮食丰产科技工程项目(2006BAD02A05,2011BAD16B05)和农业部行业科技项目(200803028,201103001)资助. （2006BAD02A05,2011BAD16B05）
