棉花花铃期管理,是棉花生产中十分关键而又比较难掌握的培管技术。这一时期,棉花集中现蕾、开花、座桃,需要大量的养分。在由营养生长的蕾期转入以生殖生长为主的花铃期,对肥水供应的早迟、多少十分敏感。而入伏以后,天气变化激烈,烈日易旱,暴雨易涝,严重影响肥水的正常供应及棉花生理的变化。所以,过去我县有不少棉田,虽然抓住了苗蕾期管理,争得了早发稳长,但花铃期管理不过 Cotton boll management, cotton production is very crucial and difficult to grasp the culture of technology. During this period, cotton concentrated budding, flowering, peach, requires a lot of nutrients. At the bud stage of vegetative growth, the flowering period is dominated by reproductive growth, which is sensitive to the late supply of fertilizer and water. After entering the V, the weather changes fierce, the sun prone to drought, heavy rains floods, seriously affecting the normal supply of fertilizer and cotton physiological changes. Therefore, in the past I County has a lot of cotton fields, although seized Miao Lei period management, won the early onset of stability, but the management of flower bell period however