控释肥施用量对南方油菜的影响

Effects of Application Amount of Controlled-release Fertilizer on Southern Rape

[目的]为了适应"机播机收,适度管理"的栽培方式,研究缓效控释肥在播种时一次性施用后,其养分分期释放以满足油菜不同时期对营养的需要。[方法]利用根据油菜生长特性,研制出缓效复合肥,研究其施用效果。[结果]施用控释肥的效果很好。控释肥的养分释放规律和作物需肥规律基本一致,可促进油菜生长发育,培育理想的越冬壮苗,改善植株经济性状,促进油菜增产。而且施用控释肥一季油菜只需施一次,省工省力。[结论]该研究可以为南方各地区油菜的施肥与油菜的机械化生产提供一定的依据。

[Objective]In order to adapt to the cultivation mode of mechanical sowing and harvest,and moderate management,one-time application of controlled-release fertilizer at southern winter rape seedling period could meet the demand of rape nutrition in different period. [Method] According to the growth characteristics of rape,the controlled-release fertilizer was produced,and the application effect was studied. [Result] The application effect of the controlled-release fertilizer was good. The nutrition release regular was basically in line with the crop fertilizer demand regular. It could promote the growth of the rape,cultivate the ideal seedling,improve the economic traits,and increase the yield of the rape. One-time application of controlled-release fertilizer could save labor and time. [Conclusion] The research could provide the basis for the fertilization in northern area and the machine production of the rape.