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大豆种子常规繁殖只有20～30倍。采用高倍繁殖技术可达70～80倍以上;高倍繁殖技术不仅增加种子数量,而且缩短繁种年限,可使新品种提前应用到大面积生产上,是加快新品种推广速度的重要措施之一。 1 选地、选茬与整地应选土壤肥沃的水岗地或有灌水条件的平川地。茬口最好选伏秋翻整地达播种状态的麦茬,不选甜菜茬,忌选重、迎茬和葵花茬。春整地的地块,随耙随耢随播种,以保墒情。 2 以肥促产稀植高繁能扩大单株生长发育环境,促分枝,多结荚,促结实,增粒重,提高单株产量。因此,以增加施肥员,确保高繁倍数。底肥施有机肥15000kg/hm~2。种肥施二铵180kg/hm~2、尿素
Soybean conventional breeding only 20 to 30 times. High multiplication technology can reach more than 70 to 80 times; High multiplication technology not only increase the number of seeds, but also shorten the breeding time, can advance the application of new varieties to large-scale production, is one of the important measures to speed up the promotion of new varieties. 1 election, the selection of crop and soil preparation should be selected fertile land or water irrigation plains Pingchuan. Stubble is best to choose the fall of autumn sowing the state of wheat stubble, do not choose beet stubble, bogey election weight, stubble and sunflower stubble. Spring plot of the land, with the rake with 耢 with sowing, in order to protect the moisture situation. 2 to promote the production of fertilizer and fertilizer sparse plant growth and development environment can be expanded to promote branching, multi-node pod, and promote seed, increase grain weight and increase yield per plant. Therefore, to increase fertilizers, to ensure a high number of multiples. At the end of fertilizer organic fertilizer 15000kg / hm ~ 2. Fertilizer Shi diammonium 180kg / hm ~ 2, urea