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干热风是我国农业生产上一种自然灾害,发生频繁、危害面广。我国黄淮平原、新疆、甘肃河西走廊、宁夏银川灌区等部分地区都有发生。在国外,中东和非州靠近沙漠各国及苏联部分地区也常有发生。这种灾害性天气的特点是高温、低湿和伴有一定的风速,常于夏秋之间发生,主要对小麦和棉花危害较大,往往丰收在望的小麦和棉花由于几场干热风的突然袭击而造成减产。现就干热风发生规律和防治措施简述如下。
Dry and hot wind is a kind of natural disasters in our country’s agricultural production, occurring frequently and endangering a wide range of areas. Huanghuai Plain in China, Xinjiang, Gansu Hexi Corridor, Yinchuan Irrigation in Ningxia have occurred in some areas. In foreign countries, the Middle East and Africa are also close to the desert countries and parts of the Soviet Union. This catastrophic weather is characterized by high temperatures, low humidity and associated wind speeds, often occurring between summer and autumn, and is largely detrimental to wheat and cotton. Wheat and cotton, often in good harvest, are subject to sudden, Cause cut. Now on the hot and dry wind rules and prevention measures are summarized below.