直播密度对油菜产量、农艺性状及抗性的影响

研究了直播密度对油菜产量、农艺性状及抗性的影响。结果表明：在江西宜春,油菜品种赣油杂1号最适直播密度为27万株/hm^2,在此密度条件下,产量可达2216.1 kg/hm^2,其株型适中,单位面积有效角果数、每角粒数较多,分别为7595.1万/hm^2、18.8粒,且抗性较强,发病率低于10%,病情指数低于5.0。

Effects of Planting Density on Yield, Agronomic Characters and Resistance of Rapeseed

This experiment in different planting density was carried out to study the effects of density on yield, agronomic characters and resistance of rapeseed. The results indicated that in Yichun city of Jiangxi province, the optimal planting density for Ganyouza No. 1 was 27 × 10^4 plants/hm^2 ; under this planting density, the rapeseed yield could reach to 2216.1 kg/hm^2, the tested rapeseed had moderate plant type, more effective pods （7595.1× 10^4/hm^2 ） and more seeds （ 18.8 per pod）, its resistance was strong, the incidence of disease was below 10% and the index of disease was under 5.0.