【摘要】 采用"积分回归"方法,分析了山西省近二十年来旱地玉米产量与降水,平均气温及日照时数等气象要素的关系;明确了各气象要素对旱地玉米产量效应大小的排序为:降水>日照时数>平均气温;各要素影响玉米产量的关键时期是:5月份的降水量,4月中旬到5月上旬的平均气温、8月份的平均气温及6月份的日照时数;提出了充分合理利用气候资源提高旱地玉米产量的主要耕作栽培措施。更多还原

【Abstract】 Adopting integral-regression analysis,we analysed the relation between the yield ofmaize on dry land and the primary meteoric factors such as precipitation,the average atmospheric temperature,sunshine time etc.in Shan xi province in recent twenty years. It is clear that the range of various meteoric factors,which affect the yield of maize on dry land,is precipitation sunshine time the acerage atmo- spheric temperature,and the key periods are precipitation in May,the average atmospheric temperature from the middle of April to the first ten-day period of May as well as the average atmospheric temperature in August,and sunshine time in June.This paper puts forward the main cultureal measure of making full and rational use of climatic resources for raising the yield of maize on dry land.更多还原