甘蓝型低芥酸油菜（8907）农艺措施优化初探

PRELIMINARY STUDY ON OPTIMIZATION OF AGRONOMIC PRACTICES FOR THE LOW ERUCIC ACID STRAIN 8907(Brassica napus L.)

试验采用二次回归通用旋转组合设计方法，对甘蓝型低芥酸油菜品系（８９０７），主要栽培技术因子进行研究，明确了低芥酸油菜品系（８９０７）的种植密度、氮肥用量、施肥方法、钾肥用量与油菜籽产量的关系，并获得产量高于２２５０ｋｇ／ｈｍ￣２保证率达９５％的优化方案。同时，对产量的构成也作了优化组合筛选。

The main technical factors of agronomic practices for the low erucic acid variety 8907 (Brassica napus L.)were studied with the commonly used method of rotation and combinatorial design quadratic regression. The relationships between planting density,nitrogen fertilizer amount,method of fertilizer application,muriate fertilizer amount and yield of 8907 were determined. Through microcomputer simulation and optimization, the opimum scheme of agronomic practices for a yield of more than 2 250 kg/hm2 with 95% reliability in the same test condition was obtained. Meanwhile,the optimum combination scheme for the yield components was also selected in the same condition.