论文部分内容阅读
晋南灌区包括运城、临汾两大灌区,面积598.5万亩(保浇477.6万亩)。该区土壤以褐土为主,土体结构良好,耕层深厚,自然肥力较高,土壤耕层含有机质1.00—1.50％、全氮0.068—0.102％、速效氮58.4—84.7ppm、速效磷13.44--27.75ppm、速效钾88.5—134.8ppm。光热资源丰富,年平均气温12—13.7℃,稳定通过10℃的积温4100—4500℃,无霜期180--210天,年日照时数2200--2500小时,其中小麦生育期日照时数1600—1750小时,年均降雨量500—570毫米。
Jinnan Irrigation District, including Yuncheng, Linfen two major irrigation areas, an area of 598.5 hectares (Paul pour 4776000 acres). The soil of this area is dominated by cinnamon soil with good soil structure and deep plow with high natural fertility. The soil layer contains 1.00-1.50% of organic matter, 0.068-0.102% of total nitrogen, 58.4-84.7ppm of available nitrogen, 13.44 of available phosphorus - 27.75 ppm, available potassium 88.5 - 134.8 ppm. Rich in light and heat resources, the annual average temperature of 12-13.7 ℃, stable through 10 ℃ accumulated temperature 4100-4500 ℃, frost-free period 180-210 days, the annual sunshine hours 2200--2500 hours, of which the wheat growth period sunshine hours 1600- 1750 hours, with an average annual rainfall of 500-570 mm.