不同配比复合肥和移栽密度对油菜农艺性状和产量的影响

Effects of Different Ratios of Compound Fertilizers and Transplanting Density on Agronomic Characteristics and Yield of Rapeseed

[目的]研究不同配比复合肥和移栽密度对油菜农艺性状和产量的影响。[方法]以华油杂12为材料,采用大田小区试验,研究3种不同配比复合肥和2种移栽密度对油菜农艺性状及产量的影响。[结果]与常规移栽相比,稀植移栽的油菜根系发达,有效分枝数、有效角果数多。施用复合肥Ⅰ的稀植移栽油菜根数、有效分枝数、有效角果数和产量的增幅最明显,分别达到了44.27%、56.83%、170. 29%和28.43%,而菌核病病情指数下降了29.73%,产量达到4 743.33 kg/hm2。[结论]施用复合肥Ⅰ的稀植移栽是最优组合,适合在山区推广种植。

[Objective]To research the effects of different ratios of compound fertilizers and transplanting density on agronomic characteristics and yield of rapeseed.[Method]A field plot experiment was conducted to study the application effects of three different ratios of compound fertilizers and two transplanting densities on rapeseed,using Huayouza 12 as material.[Result]Compared with the conventional transplanting,the root systems were more developed,the effective branch and the number of pod per plant of sparse transplanting were increased.The increases of roots number,the effective branch,the number of pod per plant and yield reached tops with 44.27%,56.83%,170.29%and 28.43%,respectively,when used compound fertilizerⅠ,the disease index decreased by 29.73%and the yields increased by 28.43%,the yield reached 4 743.33 kg/hm 2 compared with the conventional transplanting.[Conclusion]Sparse transplanting and using compound fertilizerⅠin this experiment is more beneficial to the growth of rapeseed,which is suitable to be popularized in mountainous regions.