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[目的]探讨优质高产油菜新品种杂双2 号的最佳栽培密度。[方法]设计4 个不同栽培密度(12.0 万、19.5 万、27.0 万、34.5 万株/hm2) ,进行杂双2 号不同栽培密度试验。[结果]以密度19.5 万株/hm2时产量最高,达3 939.15 kg/hm2,较其他密度处理增产均达0.01 极显著水平,且产量构成因素较协调,个体和群体发育协调。不同栽培密度对产量构成因素影响最大的是单位面积总角果数,其次是千粒重和每角粒数; 随密度的增大,株高逐渐降低。[结论]19.5 万株/hm2是杂双2 号最适宜的栽培密度。
[Objective] The research aimed to discuss the best cultivation density of high-quality and high-yield new rape variety Shuang Shuang 2. [Method] Four different cultivation densities (120,000, 195,000, 270,000, 345,000 plants / hm2) were designed for different cultivation density test of Zaoshun No.2. [Result] The highest yield was 3939.15 kg / hm2 at the density of 195,000 plants / hm2, which reached the 0.01 significant level compared with other densities. The yield components were coordinated and the development of individuals and groups was coordinated. The effect of different planting densities on the yield components is the one of the total number of pods per unit area, followed by the 1000-grain weight and the number of grains per horn. With the increase of density, the plant height gradually decreases. [Conclusion] 195000 plants / hm2 was the most suitable cultivation density of Zuang Shuang No.2.