论文部分内容阅读
选择最佳播种期是培育油菜壮秧的首要条件,又是油菜高产稳产的重要保证。在早中熟类型油菜品种的播期上,由于意见不一,对指导生产带来一定困难.为了探讨这类油菜的最佳播期,我们从1979年起,连续四年做了播种期试验,研究了不同播种期对油菜生长发育和产量的关系,为进一步推广早中熟甘蓝型油菜品种,确定最佳播种期提供依据。
Choosing the best sowing date is the primary condition to cultivate strong seedlings of rapeseed, and it is also an important guarantee for the high and stable yield of rapeseed. In the sowing dates of early-middle-maturing rapeseed varieties, due to different opinions, it is difficult to guide the production.In order to explore the best sowing date of this kind of rapeseed, we conducted sowing test for four years in succession from 1979 , Studied the relationship of different sowing dates on the growth and yield of rapeseed and provided the basis for further popularizing early maturing rapeseed varieties and determining the optimal sowing date.