我县地处冀南麦棉集中产区,自然气候条件适宜种麦,亦适宜植棉,故发展麦棉生产有很大的潜力。但是,麦棉两熟争光、争地、争水、争肥的矛盾颇为突出。为了解决这些矛盾,从1981年开始,我们进行了一系列试验,初步总结出麦棉实行一年两熟的五改技术:即“改一次施底肥为分层施底肥;改棉花春 My county is located in southern Hebei wheat and cotton-producing areas, natural and climatic conditions suitable for wheat, cotton is also suitable for the development, so the development of cotton production has great potential. However, the contradiction between wheat and cotton farming, competition, competition for water and competition for fertilizer is quite prominent. In order to solve these contradictions, we have carried out a series of experiments since 1981, initially summarizing that the five-year-changing technology of wheat and cotton double-ripening in one year is: "change the base fertilizer to make stratified application of base fertilizer;