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中间型小麦是一类灌浆成熟期间冠层温度具有冷暖波动性质的小麦 ,它与冠层温度持续偏低的冷型小麦以及冠层温度持续偏高的暖型小麦明显不同。其性状尤其代谢功能从多年平均状况看介于性状较优的冷型小麦和性状较差的暖型小麦之间。这类小麦的性状不够稳定 ,当环境条件优良时 ,它的一些重要性状向冷型小麦趋近 ;当环境条件恶劣时 ,它的一些重要性状则向暖型小麦靠拢 ,表现出较为明显的摆动 ,这构成了中间型小麦产量不稳定的重要生态生理基础。为了获得高而稳定的产量 ,逐渐改变小麦的温度型 ,实现品种冷性化有可能是条有希望的途径
Wheat is a type of wheat with warm and fluctuating canopy temperature during grain filling. It is obviously different from cold type wheat whose canopy temperature is continuously low and warm type wheat whose canopy temperature is continuously high. Its traits, especially metabolic functions, are based on the average condition over the years, between cold-type wheat with better traits and warm-type wheat with poor traits. The characters of such wheat are not stable enough. When the environmental conditions are good, some of its important traits move toward the cold wheat. When the environmental conditions are poor, some of its important traits move closer to the warm wheat and show a more obvious swing , Which constitutes an important ecophysiological basis for the instability of middle-type wheat production. In order to obtain high and stable yield, gradually changing the temperature type of wheat and achieving variety coldness may be a promising approach