湖南省油菜栽培面积近几年来已扩大到600万亩以上,但平均单产较低,未超过140斤。低产原因很复杂,从栽培的角度看,有移栽期、密度和施肥量等方面的因素。但以往对这些因素进行单项研究的较多,综合研究的较少。本试验采用正交设计,研究了移栽期、密度和施肥量对油菜生理特性及产 Hunan rape cultivation area in recent years has been expanded to more than 600 acres, but the average yield is low, not more than 140 pounds. The reason for low yield is complex, from the perspective of cultivation, there are factors such as transplanting period, density and fertilizer. However, in the past, there were more single studies on these factors and fewer comprehensive studies. In this study, the orthogonal design was used to study the effects of transplanting date, density and fertilizer on physiological characteristics and yield of rape