论文部分内容阅读
农作物产量的丰歉,与气候条件的好坏有密切关系。而玉米的根系发达,茎秆粗壮,株高叶大,对温度、日照和雨量的反应也更加敏感。我们根据县气象站1958～1982年的气象资料,分析了温度、光照、雨日、雨量主要气象因素对玉米产量的影响。24年中,有效积温在1300℃以上的有13年,玉米平均亩产752.6斤;有效积温在1300℃以下有11年,平均亩产为631斤,高温年比低温年增19.3％。生育期日照总时数750小时以上的有14年,平均亩产为725.4斤,日照总时数不足750小时的有10年,平均亩产为657斤,日照充足的年份比日照不足的增产10.4%。整个生育期雨日在53天以下的有12年,平
The crop apology and apology are closely related to the climatic conditions. The root system of corn developed, stalks thick, tall leaves, the temperature, sunshine and rainfall response is also more sensitive. Based on the meteorological data of the county weather station from 1958 to 1982, we analyzed the effects of temperature, light, rain and rainfall on the yield of maize. In 24 years, the effective accumulative temperature was above 1300 ℃ for 13 years, and the average yield of corn was 752.6 kg. The effective accumulated temperature was below 1300 ℃ for 11 years with an average yield of 631 kg per mu. The annual high temperature was 19.3% higher than the low temperature. Growth period of 750 hours of sunshine over the total of 14 years, an average of 725.4 pounds per mu, sunshine hours less than 750 hours for 10 years, an average of 657 pounds per mu, sunshine sufficient years less than sunshine less yield 10.4 %. Rainy days throughout the growth period in 53 days following 12 years, flat