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本文是在多年从事豆类种子吸胀冷害系列研究的基础上,即以“再水合”的膜“修补”有物理与生化两过程的假设为指导,经室内模拟试验的结果,肯定了PEG引发能改善膜的修补,提高种子活力,增强抗逆力,进而应用于大豆抗寒早播的实践。经两年的田间试验结果表明,在湿冷的条件下,PEG引发的抗寒保苗效果显著。“黑河三号”是对低温敏感的品种,种子经PEG引发之后,早播能提高40％的出苗率。增产效果也因品种和地理条件可有很大的差异。如在佳木斯地区,以“合丰24”和“706”两品种为材料,早播可增产30～50％,而“合丰25”属抗寒品种,引发则无效果;在黑河地区,以“黑河3号”为材料,早播可增产7％,而“黑河4号”和“黑鉴1号”均无效。
This article is based on the series of researches on the imbibition and cold injury of leguminous seeds for many years. Under the guidance of the physical and biochemical processes of “rehydration” membrane “repair”, the results of indoor simulation tests confirm that PEG-induced Can improve the membrane repair, improve seed vigor, enhance the resilience, and then applied to the practice of soybean winter sowing. After two years of field test results show that in cold and wet conditions, PEG-induced cold-salvage effect is significant. “Heihe III” is a low-temperature-sensitive variety, the seed induced by PEG, the early planting can increase the germination rate of 40%. Yield increase also because of the variety and geographical conditions can have very big difference. For example, in Jiamusi region, “Hefeng 24” and “706” cultivars could increase the yield by 30-50% as early as sowing, and “Hefeng 25” “Heihe 3” for the material, early sowing can increase 7%, while “Heihe 4” and “black Kam 1” are invalid.