大豆是喜温作物,生长后期对温度特别敏感.研究表明:秋季当温度降至10-12℃以下时,对大豆籽粒成熟影响很大. 以石河子地区为例,绝大多数年份复播大豆能正常成熟,但也有的年份,由于冷空气入侵较早,≥10℃的终日提前出现,使大豆的籽粒形成后期处于10℃以下的低温环境中.从植株的外部形态上虽然很难看出有什么明显的受害症状,但实质上已受害.这种低温可称之为延迟性低温冷害.笔者通过分 Soybean is a thermophilic crop and its growth is particularly sensitive to temperature.The results show that when the temperature falls below 10-12 ℃ in autumn, it will have a great effect on the maturity of soybean.With Shihezi region as an example, Normal mature, but also some years, due to cold air intrusion earlier, ≥ 10 ℃ in advance all day early, so that the formation of soybean grain late in 10 ℃ below the low temperature environment from the plant morphology although it is difficult to see what Obvious symptoms of victimization, but in essence have been harmed .This low temperature can be called delayed chilling injury .I pass points