甘蓝型双低杂交油菜新品种黔油14号制种配套技术研究 Ⅰ.管理水平对制种产量及产量构成因素的影响

Technique of Seed Production of the New Variety Qianyou 14 in B.napus I. Effect of management level on yield and its component factors

根据对黔油14号大面积制种中3种管理水平的制种田进行调查研究表明:管理水平上等田块因群体长势较好,未发生倒伏,产量潜力得到有效发挥,其制种产量、有效角率及角粒数和千粒重均较群体长势较好、发生倒伏的中等管理水平的田块和长势弱、未倒伏的下等管理水平的田块高,其产量分别高40.7%和55.8%,每角粒数多3.54和1.82粒。因此在油菜制种中,加强田间管理、防止油菜倒伏是提高制种产量和质量的技术关键。

The yield and yield component factors under three management levels was investigated in seed production field of Qianyou 14. The investigation results showed that plants grew well without lodging in good management level, plants grew well but lodging occured in middle management level, plants grew weakly although no lodging occured in low management level. The yield, effective pods per plant, grains per pod and 1000grain weight of the good management level were better than those of the middle and low management levels. The yield increased by 40.7% and 55.8%, respectively. The grains per pod increased by 3.54 and 1.82. The key technique for improving seed yield and quality is to improve the management level and to avoid lodging in seed production field.