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本文通过对国内外麦类作物耐温性研究进展概括和总结，指出：（１）麦类作物湿害症状多种多样，前期主要是出苗率低，苗瘦苗弱；中期主要是植株矮化，功能叶黄化，分蘖大量死亡，成穗率下降，根系受到伤害，而后期则表现叶片早衰早枯，造成光合作用减弱，灌浆速度减慢，产量因此而受损；（２）湿害首先起因于根系缺氧，根系活力下降，吸收和功能减弱．其次无氧呼吸等产生的有毒物质在土壤中积累，对根系正常生长产生毒害作用．随着根系吸收功能的下降以及土壤中营养成分的淋失，地上部水分和营养供应不足，给植株的正常生命活动带来严重影响；（３）在麦类作物的生长发育不同时期，对湿害的敏感性不同。小麦在孕穗期最为敏感，而大麦则在拔节期和抽穗期；（４）温度是湿害程度大小的一个重要影响因子，温度越高，湿害越严重；（５）作物耐湿性是可遗传的，并且这种遗传性在麦类作物的种和品种间存在着差异。
This paper summarizes the research progress on temperature tolerance of wheat crops at home and abroad, and points out that: (1) There are many kinds of symptoms of wheat crop wet damage, mainly the early emergence rate is low, the seedling weight is weak and weak; the middle is mainly plant dwarf , Functional leaf yellowing, a large number of deaths of tillers, decreased ear percentage, root damage, and late leaves early withered early withered, resulting in weakened photosynthesis, filling speed slowed down, so yield damage; (2) Roots due to hypoxia, decreased root activity, absorption and decreased function. Followed by anaerobic respiration and other toxic substances accumulated in the soil, the normal growth of roots have a toxic effect. With the decrease of root absorption capacity and the leaching of nutrients in soil, insufficient supply of water and nutrients to shoots can seriously affect the normal life activities of the plants. (3) During the growth and development of wheat crops, The sensitivity of harm is different. Wheat is most sensitive at booting stage, while barley is at jointing stage and heading stage; (4) temperature is an important factor affecting the degree of wet injury. The higher the temperature, the more severe the wet injury; (5) , And this heredity is different between wheat varieties and varieties.