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.
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.
出处
《耕作与栽培》
2014年第3期10-12,共3页
Tillage and Cultivation
关键词
定苗密度
杂交油菜
机械化直播
planting densiyl hybrid rape
mechanical seeded techniques
