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我县地处河北省西南部、太行山东麓,属半湿润易旱区。降雨量年际变化大,最多年份是最少年份的3.1倍,一般年份均降雨561.7毫米,其中小麦生育期降雨180毫米。全县历年小麦播种面积20万亩,其中纯旱地小麦15万亩。由于干旱缺水,旱作小麦亩产一直徘徊在40～70公斤。1987年以来,我们根据本县自然特点,对播前降雨与栽培技术的关系进行了研究,制定出旱作小麦“逐雨蓄墒,按雨应耕,测雨定播,量
Our county is located in the southwest of Hebei Province, the eastern foot of Taihang Mountains, a semi-humid and easily arid zone. The interannual variation of rainfall is large, with the maximum year being 3.1 times of the minimum year. The average annual rainfall is 561.7 mm, of which the rainfall during wheat growing period is 180 mm. The county throughout the calendar year 200,000 acres of wheat sown area, of which 150,000 acres of wheat in pure dry land. Due to drought and water shortage, dry output per mu of wheat has been hovering at 40 to 70 kg. Since 1987, we have studied the relationship between pre-sowing rainfall and planting techniques according to the natural features of this county, and formulated the planted rain-fed soil moisture, rain-fed cultivation,