棉花的花器是一种无限花序,生育期长,人们习惯于早播、稀播、稀植、增工、加肥,延长结铃期,增加单株结桃数,爭三桃,夺高产,因此,田间管理时间长,花工多,成本高,粮棉爭季节,爭土地,爭劳力,爭肥料的矛盾突出,加之我省历年气候一般是早春低温多雨,七、八月伏旱,秋雨多,招致烂种、死苗、蕾铃脫落、烂桃和草荒严重,难以稳产、高 Cotton flowers is an infinite inflorescence, long period of growth, people are accustomed to early sowing, thinning, thinning, building, fertilizer, to extend the bell period, increase the number of peaches per plant, fight three peaches, Therefore, the field management for a long time, labor-intensive, high cost, grain and cotton competition season, fight the land, fight labor, competition for fertilizer prominent, combined with the calendar year in our province is generally the early spring low temperature and rainy, drought in July and August, autumn , Leading to rotten, dead seedlings, Lei Ling off, bad rotten peat and grass, difficult to stable, high