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本文通过北种南移分期播种对大豆生育期结构及产量的影响研究 ,表明早熟品种晚播从生育期结构来看 ,主要表现为从苗期到开花期时间缩短 ,而生殖生长阶段所受的影响越来越小。从株高上看 ,超过早播品种(系 )的株高 ,还表现为单株荚数减少 ,百粒重、粒茎比增加。哈尔滨市晚播与北安正常播期品种 (系 )生育进程的步伐基本一致 ,形态结构相似 ,大大缩小了与哈市正常播期生育进程和形态结构的差距 ,为生态回交育种提供了可供选择的物质基础
In this paper, we study the effects of staging sowing on the structure and yield of soybean in the south by staging in the south, which shows that the late sowing date of early maturing varieties is from the growth period to the sowing date, which is mainly manifested as shortening from seedling to anthesis, The impact is getting smaller and smaller. From the height point of view, more than the early sowing varieties (lines) of the plant height, but also showed a pod number per plant to reduce the weight of 100, grain-stem ratio increased. The evening broadcast of Harbin and the normal sowing date of Bei’an were basically the same, with the similar morphological structure, which greatly narrowed the gap between the normal sowing process and the morphological structure of Harbin sown city, The material basis of choice