随全球气候变暖，温室效应越趋明显，冬季温度逐年提升。暖冬使大小麦生长旺盛，生育进程加快，一旦遇到较强低温或“倒春寒”时，冻害严重，使产量受到影响。因此必须针对近年来自然气候变化的情况，从生物和气候统一的观点出发，完善和调整二麦种植配套技术，以确保二麦单产? With the global warming, the greenhouse effect becomes more obvious and the winter temperature increases year by year. Warm winter so that vigorous growth of wheat and wheat, the process of birth to speed up, in the event of a strong low-temperature or “late spring cold” severe damage to the frozen, the output affected. Therefore, in view of the natural climate change in recent years, we must improve and adjust the supporting technologies for secondary wheat planting from the viewpoint of the unification of biology and climate so as to ensure that the yield of secondary wheat is high.