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杂交油菜机械化直播适宜定苗密度研究
引用本文:徐小冰,张明刚.杂交油菜机械化直播适宜定苗密度研究[J].耕作与栽培,2014(3):10-12.
作者姓名:徐小冰  张明刚
作者单位:绥阳县农牧局,贵州绥阳563300
摘    要:以杂交油菜黔油30号为材料,在绥阳县开展了对杂交油菜机械化直播适宜定苗密度的研究.结果表明:定苗密度为30万株/hm2产量最高,单产达2446kg/hm2,适宜的定苗密度范围为22.5万~30万株/hm2,实收产量与定苗密度间有显著的一元二次回归关系y=-0.272x2+14.48x+2261.6,预测杂交油菜机械化直播最佳密度为26.60万株/hm2.

关 键 词:定苗密度  杂交油菜  机械化直播

Study on Appropriate Planting Density of Mechanical Seeded Hybrid Rape
Institution:XUE Xiao--bing, ZHANG Ming--gang (Auiyang Agricultural Bureau, Suiyang, Guizhou 563300, China)
Abstract:Using hybrid rape cultivar Qianyou 30 as test material, appropaiate planting density of mechanical seeded techniques were studied in Suiyang. The results showed that planting density was 300000plants/hm2, the yield was highest, it's 2446kg/ hm2 , the appropriate planting density is 225000--300000plants/hm2, regression relation of yield and planting density is y = -0. 272x2 +14. 48x+2261.6, the best planting density was 266000plants/hm2.
Keywords:planting densiyl hybrid rape  mechanical seeded techniques
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