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灵宝县地处豫西丘陵山区,十年九旱,新发展的水浇地,由于水源不足,农作物受旱时只能浇“保命水”.绝大部分没有水利条件的地区,农作物的生长靠年600毫米左右不均匀的降水量.干旱仍是束缚农业生产发展的主要矛盾,其中又以伏旱为重.1、伏旱频率:从1957-1979年的23年中,除1958、1965、1969、1976四年没有伏旱外,其余19年均有连续20天以上,降水30毫米以下的伏早出现,占82.6%.其中伏早持续21-30天的有10年,31-66天的有9年.1974、1975、1979三年每年先后出现两
Lingbao County is located in the hilly and mountainous areas in the west of Henan province. In the past ten years of drought and newly developed irrigated land, due to lack of water resources, crops can only be irrigated when they are droughts. Most of the areas without water conservancy conditions, Of the annual precipitation is about 600 mm uneven precipitation.Dry is still the main contradiction of the constraints of agricultural production development, which again to the drought .1, the frequency of drought: from 1957-1979 in 23 years, except 1958, 1965 , 1969,1976 there is no drought in four years, the other 19 consecutive years have more than 20 consecutive days, 30 mm precipitation below the early appearance of volt, accounting for 82.6% of the volt as early as 21-30 days for 10 years, 31-66 days Of the 9 years .1974,1975,1979 three years each year has appeared two