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大豆生长分为营养生长期、营养生长和生殖生长交错期、生殖生长期。营养生长期的主攻目标是使大豆形成一个健壮繁茂的营养体,为多开花、多结荚创造条件,营养生长和生殖生长交错期是干物质积累最多、生长发育最旺盛时期,应在促进生长的同时,严防徒长,防止倒伏,使之正常开花、结荚;生殖生长期,茎秆生长结束,主要是度籽粒时期,这一阶段的关键是提高百粒重,土壤干旱要及时灌水。为满足大豆三个生长发育阶
Soybean growth is divided into vegetative growth, vegetative and reproductive growth staggered, reproductive growth. Nutritional growth phase of the main goal is to make soybeans to form a strong and lush nutrition, more flowering, more pod to create the conditions, vegetative and reproductive growth staggered period is the most dry matter accumulation, growth and development of the most productive period, should promote growth At the same time, to prevent the leggy, to prevent lodging, so that the normal flowering, pod; reproductive growth period, the end of the stem growth, mainly degree of grain, the key to this stage is to increase the 100-grain weight, soil irrigation to timely irrigation. To meet the three growth and development of soybean