不同密度对皖油29油菜经济性状·产量及品质的影响

Effects of Different Planing Density on Economic Characteristics,Yield and Quality of Rapeseed Variety Wanyou 29(Brassica napus L.)

[目的]分析不同栽培密度对皖油29(Brassica napus L.)经济性状、产量和品质的影响,为提高油菜产量寻求科学种植依据。[方法]采用随机区组设计,设置10个栽培密度处理,分别为12.0万、19.5万、27.0万、34.5万、42.0万、49.5万、57.0万、64.5万、72.0万、79.5万株/hm2。[结果]栽培密度对千粒重,单株产量和单株角果数的影响较大,处理间差异达显著水平;栽培密度为42.0万株/hm2时,产量最高;含油量随着栽培密度增加先增后降。[结论]直播油菜适宜栽培密度在34.5万～64.5万株/hm2为宜。

[ Objective] The purpose was to analyze the effects of different planting density on economic characteristics, yield and quality of Wanyou 29, and find out a scientific planting basis for improving its yield. [ Method] The randomized block design was used in the test. 10 planting density were 12.0 × 10^4 , 19.5 × 10^4 , 27.0 × 10^4 , 34.5 × 10^4, 42.0 × 10^4 , 49.5 × 10^4 , 57.0 × 10^4, 64.5 × 10^4 , 72.0 × 10^4 , 79.5 × 10^4 plants per ha resp.. [ Result] Planting density had big effects on 1 000-grain weight, yield per plant and pod number per plant, and there were significant difference among 10 treatments. Thereinto, when planting density was 42.0 × 10^4, its yield was the highest. Its oil content firstly increased then decreased with planting density rising. [Conclusion] The suitable planting density of rapeseed sowing directly was 34.5 × 10^4 -64.5 × 10^4 per ha.