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河北省衡水市地处黑龙港流域中部,属暖温带半干旱气候区,年幅射总量125.329千卡/cm~2,日照时数2609.9小时,年平均气温12.6℃,日均≥0℃,积温4832.3℃,无霜期191天.年降雨量524.3mm,光照充足,热量丰富、雨热同期,适于多种作物的生长.棉花是本市的优势作物,长期以来,棉田基本为一年一熟.近年来,随着市场农业的发展,棉花与粮、瓜、蔬菜间作套种复种面积逐年扩大,但多熟条件下作物的组合配套类型少且不尽合理,产量低而不稳,经济效益较差.为合理高效地利用我市丰富的气候资源,促进“两高一优”农业向更高层次发展,1996年至1998年,我们进行了棉田复合高效栽培的试验、示
Hengshui City, Hebei Province is located in central Heilonggang Basin, is a warm temperate semi-arid climate area, the total annual radiation 125.329 kcal / cm ~ 2, sunshine hours 2609.9 hours, the annual average temperature of 12.6 ℃, average daily ≥ 0 ℃, Accumulated temperature 4832.3 ℃, frost-free period of 191 days. Annual rainfall of 524.3mm, adequate light, heat, rain and heat over the same period, suitable for the growth of a variety of crops. Cotton is the city's dominant crops, cotton fields for a long time, In recent years, with the development of market agriculture, the area of multi - cropping intercropping with cotton, grain, melon and vegetables has been expanding year by year. However, there are few and unreasonable types of combinations of crops under multi - cropping conditions with low yield and instability. In order to utilize the rich climate resources of our city reasonably and efficiently and promote the development of “two high, one excellent” agriculture to a higher level, from 1996 to 1998, we conducted experiments on compound and efficient cultivation of cotton fields,