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干旱是我国北方地区影响农业高产稳产的最大气象灾害。我省地处北方半湿润易旱区,淮河以北易旱土地面积二亿二千二百多万亩,约占全省总土地面积的88.7％,大部分是我省农业发展潜力较大的山区和中低产地区。从时间上看,我省北、中部一年中常有春旱、初夏旱、伏旱和秋旱发生。春旱期间无透雨持续日数多年平均为58.2天(新乡)、61.4天(辉县)、最长的达72天以上,这样的干旱年份,豫北各县都是不到二年就出现一次;初夏旱一般1—2年出现一
Drought is the biggest meteorological disaster affecting the high and stable agricultural output in northern China. The province is located in the semi-humid and drought-prone area of the north. The area of drought-prone land in the north of the Huaihe River is more than 222 million mu, accounting for 88.7% of the total land area of the province, most of which have great potential for agricultural development in our province Mountain and middle and low yield areas. From the time point of view, the province of northern and central China often spring drought, early summer drought, drought and autumn drought occurred. During the drought period, the average number of non-through rainy days averaged 58.2 days (Xinxiang) and 61.4 days (Huixian), with the longest reaching 72 days or more. In such drought years, all counties in North Henan Province occurred once in less than two years. Early summer drought 1-2 years generally appear one