不同种植密度·施肥水平·收获次数对饲用油菜产量的影响

[目的]了解饲用油菜产量的影响因素。[方法]选取饲用油菜品种华油杂62为试材,通过设置不同种植密度、施肥水平以及收获次数,研究其对饲用油菜产量的影响。[结果]饲用油菜分次收割时,施肥水平是影响其生物产量的主要因素;饲用油菜一次性收割时,种植密度是影响其生物产量的主要因素;一次性收割饲用油菜生物产量普遍明显高于分次收割产量。[结论]应根据实际生产需求,适当调整饲用油菜种植收获方式,饲用油菜的适宜种植密度为30万~45万株/hm~2,适宜施肥量为600 kg/hm~2。

Effects of Different Planting Densities,Fertilization Levels and Harvest Times on the Yield of Forage Rape

[Objective]To determine factors affecting the yield of forage rape.[Method]Selecting forage rape variety Huayouza 62 as test materi-als,different planting densities,fertilization levels and harvest times were designed to study their effects on the yield of forage rape.[Result]When rapeseed was havested at different times,the fertilization level was the main factor that affected its biological yield;When the rapeseed was har-vested at one time,the planting density was the main factor that affected its biological yield.One-time harvested feed rape's biological yield was significantly higher than that of harvest at different times.[Conclusion]The planting and harvest means of forage rapeseed should be adjusted ac-cording to the actual production demand.The optimum planting density of forage rape was 30×104 -45×104 plants/hm2,and the appropriate fer-tilization amount was 600 kg/hm2.