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1.适时播种。春大豆的秋植播期一般掌握在7月底至8月初为宜,最迟不过立秋关。如过迟播种则后期易受低温影响,不能正常鼓粒成熟,严重影响产量。 2.提倡高密度栽培。春大豆秋播后,全生育期缩短,营养体变差,植株基本上无分枝,单株荚粒数和粒重比春播显著减少,因此要提高秋繁产量,很重要的一条就是要靠发挥群体对产量的作用,以密取胜。一般每亩需有3.5～4万株,才能确保春大豆的秋繁高产。 3.加强田间科学管理。春大豆秋播生育期比春播缩短,尤其是营养生长期更为缩短,因此必须切实抓好前期管理,争取在较短的时间内发好营养
Timely sowing Autumn planting of spring soybeans generally hold in late July to early August is appropriate, but at the latest legislation Qiu Guan. Late seeding is susceptible to low temperature later, can not be normal drum mature, seriously affecting the yield. 2. To promote high-density cultivation. After the autumn sowing of spring soybean, the whole growth period shortened, the vegetative body became worse, and the plants were basically unbranched. The number of pods per plant and grain weight were significantly reduced compared with that of spring sowing. Therefore, to increase the yield of autumn sowing, a very important one is to rely on Give play to the role of groups in production to win the victory. In general, there must be 3.5 to 40,000 plants per acre to ensure the high yield of spring soybean in autumn. 3. Strengthen field scientific management. Spring soybean sowing period is shorter than that of spring sowing, especially the period of vegetative growth is shortened. Therefore, it is necessary to do a good job of pre-management to strive for nutrition in a relatively short time