高温和干热风是我区小麦生育后期的主要灾害性天气之一。发生频繁,危害严重。因此,研究干热风发生的气象条件,危害的生理机制,预防措施及其理论根据,对保证小麦稳产高产具有重要意义。干热风是由高温、低湿和伴有一定风力所组成。鉴于在自然条件下不是每年都发生干热风,也不是年年都发生不同强度等级的干热风,为了增加机迂,加快研究进度,缩短试验年限,我们于1978年开始在田间进行人工模拟干热风试验,研究结果表明: High temperature and dry hot air is one of the major disastrous weather in the late wheat growth period in our district. Occurred frequently, serious harm. Therefore, it is of great significance to study the meteorological conditions of dry and hot wind, the physiological mechanism of harm, precautionary measures and their theoretical basis to ensure stable and high yield of wheat. Dry hot air is composed of high temperature, low humidity and accompanied by a certain wind. In view of the fact that dry and hot winds do not occur every year under natural conditions and that dry and hot winds of different intensity levels do not occur every year, we started artificial simulated hot and dry winds in the field in 1978 in order to increase opportunities, speed up the research progress and shorten the test period Test, the results show that: