青干和热干风(群众分别称之为“腾死”和“火风”)是银川灌区春小麦生育后期的主要灾害之一。其危害程度因气象条件、小麦品种、地势、土质、春小麦生育状况以及农业技术措施而异。一般青干或热干风年份可使春小麦减产5～10%,严重的可达20%以上。因此,分析掌握青干和热干风的发生规律,找出防御措施,对春小麦稳产高产有一定意义。 Green and dry wind (the masses were called “Teng death ” and “fire wind ”) is one of the major disasters of the late spring wheat growth in Yinchuan irrigation area. The extent of its harm due to weather conditions, wheat varieties, topography, soil, spring wheat growth status and agricultural technical measures vary. General dry or hot dry wind year can reduce the spring wheat 5 to 10%, severe up to 20% or more. Therefore, it is of certain significance to analyze and grasp the regularity of dryness and hot dry wind and find out the defensive measures.