还田秸秆腐解特征研究  

Decomposition Characteristics of Returned Straw

作　　者：胡宏祥[1] 马中文[1] 邵致远[1] 

机构地区：[1]安徽农业大学资源与环境学院,安徽合肥230036

出　　处：《湖南农业科学》2012年第3期44-46,共3页Hunan Agricultural Sciences

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07103-002);安徽省教育厅自然科学重点项目(KJ2010A113);安徽省115创新团队项目;安徽农业大学引进与稳定人才基金(2009-2010)

摘　　要：采用尼龙网袋法,研究了水稻秸秆的腐解特征。结果表明,水稻秸秆还田腐解率随时间延长呈增加趋势,而腐解速度早期快后期慢;还田秸秆量越大,腐解速率越慢;水稻秸秆还田深度在5 cm时腐解速度要快于10 cm深还田和表层还田。实行秸秆还田对作物具有增产作用,增产幅度达17.43%。The decomposition characteristics of returned rice straw were studied by using nylon net-bag method. The results showed that the decomposition ratio of returned flee straw increased over time, and the decomposition rate of returned rice straw was fast in the early stage and then slowed down until the final stage; the larger the amount of returned rice straw was, the slower the decomposition rate was; the decomposition rate of returned rice straw buried at 5 cm below the soil surface was faster than that buried at 10 cm below the soil surface or on soil surface. Returning rice straw to the field can increase yield of crops by 17.43%.

关 键 词：还田秸秆 腐解特征 水稻 

分 类 号：S141.4[农业科学—肥料学]