无水层节水灌溉丰产沟秸秆还田对水稻、油菜产量和土壤培肥的影响  

Effects of Straw-returning Manner on Yield of Rice and Rape and Soil Fertility Maintaining in High Yield Ditch

作　　者：王允青[1] 郭熙盛[1] 

机构地区：[1]安徽省农科院土壤肥料研究所,合肥230031

出　　处：《土壤通报》2009年第4期824-828,共5页Chinese Journal of Soil Science

基　　金：国家及安徽省粮食丰产项目"安徽麦稻高效生产条件下养分资源运筹技术研究"资助

摘　　要：丰产沟内秸秆还田对第一年水稻产量的影响效果都不明显,但对第二年水稻产量的影响明显,秸秆还田比对照增产6.3%～8.8%。后茬油菜,秸秆还田产量提高3.0%～4.0%,以单位面积计算产量,施用小麦、油菜秸秆处理水稻产量增产11.7%～27.7%,油菜产量增产16.6%～17.7%。水稻NPK吸收量,秸秆还田处理N增加6.8%～12.6%,P增加11.4%～22.4%,K增加21.0%～27.0%。试验后的土壤有机质含量提高5.7%～6.6%,土壤速效磷含量提高4.9%～9.1%。In this paper, the effects of straw-returning manner on the yield of rice and rape and soil fertility maintaining in high yield ditch were conducted .The results showed that straw returning in high yield ditch had no significant effect on the rice yield in the first year, while the effect was significant in the next year. The rice yield of straw-returning treatment increased by 6.3%-8.8% over the yield of the control treatment （CK）.And the following rape yield increased by 3.0%-4.0%. The result also indicated that the rice yield and the following rape yield per unit area with wheat and rape straw-returning treatment increased by 11.7%-27.7%, 16.6%-17.7%, respectively. In addition, straw returning promoted the increase of nutrient uptake .After two years straw-returning, soil organic matter and soil available phosphorus were increased by 5.7%-6.6%,4.9%-9.1%, respectively.

关 键 词：无水层灌溉栽培 秸秆还田方式 水稻 油菜产量 养分吸收量. 

分 类 号：S147.2[农业科学—肥料学]