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弱冬性小冀麦20在1978-1979年参加冀中南区域试验,于10月4日播种,结果比冀麦7号减产8.6%面被淘汰。 1981-1984年在河北、河南、山东等省、市、自治区的不同生态条件下,研究了其不同播期对生理生化的影响及其冻害的产量构成规律,试验表明,在晚播情况下,即在1月份最低气温合计不低于-264℃,极端最低气温不低于-13.2℃的
Weak winter Ji-wheat 20 in 1978-1979 to participate in the pilot test of southern Hebei, on October 4 sowing, the results than the Ji-mai 7 8.6% cut surface was eliminated. In 1981-1984 under different ecological conditions in Hebei, Henan, Shandong and other provinces, municipalities and autonomous regions, the effects of different sowing dates on the physiological and biochemical characteristics and the composition of the frostbite were studied. The results showed that under late sowing conditions, That is, the minimum temperature in January totaled not less than -264 ℃, the extreme minimum temperature of not less than -13.2 ℃