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运城位于山西省南部,属黄河流域棉区。全年无霜期215～230天,年平均气温13.6℃,热量资源丰富,雨水充沛。全区常年小麦播种面积600万亩左右,棉田面积约占粮田的1/4,是我省粮棉的主要产区。传统的耕作制度为一年一熟制。自1983年以来,我们在开展缩期季棉育种的同时,引进全国特早熟区试品种在运城夏播,进行一年两熟、一
Yuncheng is located in the southern part of Shanxi Province, belonging to the Yellow River cotton area. Frost-free period throughout the year 215 to 230 days, the annual average temperature of 13.6 ℃, abundant heat resources, abundant rainfall. The area perennial wheat sown area of about 6000000 acres, cotton fields account for about 1/4 of the grain, is the main grain-producing areas in our province. The traditional farming system is a one-year system. Since 1983, we carry out the contraction of cotton breeding at the same time, the introduction of the national special precocious trial varieties in the summer sowing in Yuncheng, two cooked a year, one