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提高复种指数是农业生产上充分利用当地农业气候资源的重要途径之一.北疆沿天山乌伊公路一带,历来种植冬小麦、玉米、棉花、甜菜等作物,其中冬小麦对≥0℃总积温的利用率为61.8%,棉花为81.0%,甜菜为88.9%,以麦收后剩余的热量资源最多.同时麦收后7—9月份的总日照时数达840—870小时,总辐射量为45千卡/厘米~2,河流径流量为全年总流量的50%以上.为了利用这些农业资源,当地多复播白莱、糜子、绿肥和大豆等,其中以复播大豆经济效益最高,但麦收后所剩余≥10℃的积温(1,690—1,960℃)和生长期(85—95天)只能保证它70%的年份能正常成熟.为此,
Increasing cropping index is one of the most important ways to make full use of local agro-climatic resources in agricultural production.Being along the Wuyi Highway in Tianshan Mountains, the northern part of Xinjiang has always planted crops such as winter wheat, corn, cotton and sugar beet, The rate of 61.8%, cotton 81.0%, sugar beet 88.9%, after the wheat harvest the remaining caloric resources at the same time after wheat harvest July-September total sunshine hours of 840-870 hours, the total radiation of 45 kcal / Cm ~ 2, the runoff of the river is more than 50% of the whole year’s total flow.In order to utilize these agricultural resources, the local multi-planted Baili, billet, green manure and soybean, among them the highest economic benefit of compound sowing, The remaining accumulated temperature ≥10 ℃ (1,690-1,960 ℃) and the growth period (85-95 days) can only guarantee that 70% of its years can mature normally.To this end,