期刊论文

Effect of Winter Crops Straw Returning on Yield and Soil Fertility in A Double Cropping Rice Paddy

中文

作物研究

1001-5280

2019

33

2

104-109

10.16848/j.cnki.issn.1001-5280.2019.02.03

湖南省教育厅大学生科创基金项目。

本校为第一机构

为探讨冬作物秸秆还田对双季稻产量和土壤肥力的影响,以冬闲—双季稻为对照,设计了油菜—双季稻、紫云英—双季稻、黑麦草—双季稻、马铃薯—双季稻4种复种模式,进行对比试验。试验结果显示:与冬闲相比,油菜、紫云英、黑麦草和马铃薯秸秆还田提高了水稻有效穗数和穗粒数,水稻平均产量增加,增幅分别为4. 44%、6. 50%、4. 76%、6. 69%;油菜、紫云英、黑麦草和马铃薯秸秆还田后土壤平均pH值比冬闲分别下降0. 07、0. 11、0. 25、0. 08个单位,平均有效磷含量分别下降25. 0%、17. 6%、22. 5%、28. 6%,降幅明显;土壤碱解氮含量增幅大小顺序为紫云英还田处理>油菜秸秆还田处理>黑麦草秸秆还田处理,增幅分...

In order to investigate the effects of winter crops straw returning on yield and soil fertility in a double cropping rice paddy,four main multiple cropping modes,rape-double cropping rice,astragalus-double cropping rice,ryegrass-double cropping rice and potato-double cropping rice,were set up with winter fallow-double cropping rice as control.The results showed that:Rape,Chinese milk vetch,ryegrass and potato returning straw increased the rice average yield of four seasons by 4.44%,6.50%,4.76% and 6.69% respectively compared with fallow.The main way to increase yield was to increase the number...