水稻秸秆全量还田对直播油菜出苗和产量的影响

Effects of Total Rice Straw Returning on Seedling Emergence and Yield of Direct-seeded Rapeseed

[目的]研究水稻秸秆还田对油菜出苗和产量的影响。[方法]选用8个油菜品种,在前茬水稻田进行了水稻秸秆全量还田对油菜出苗和产量的影响试验。[结果]3叶期时秸秆还田下的油菜出苗率明显低于秸秆未还田下的出苗率,其幼苗苗情也弱于秸秆未还田条件下的油菜。大部分油菜品种秸秆还田下的产量低于秸秆未还田的油菜,但后期秸秆被微生物分解后可被植物吸收利用,对油菜的生长发育有一定的促进作用。[结论]该研究为油菜生产中秸秆还田技术的利用提供了参考。

[Objective]The aim was to study the effects of rice straw returning on the emergence and yield of rapeseed.[Method]Eight rape varieties were selected to carry out an experiment on the effect of total rice straw returning on the emergence and yield of rapeseed in the previous paddy field.[Result]At the 3-leaf stage,the emergence rate of rapeseed with straw returning to the field was significantly lower than that without straw returning to the field,and its seedling condition was also weaker than that without straw returning to the field.The yield of most rapeseed varieties with straw returning to the field was lower than that of rape without straw returning to the field,but the straw could be absorbed and utilized by plants after being decomposed by microorganisms in the later stage,which had a certain promoting effect on the growth and development of rapeseed.[Conclusion]This study provided a reference for the utilization of straw returning technology in rapeseed production.