根据今年黄河流域棉区棉花长势良好,部分棉田棉花发育较常年稍晚的特点,应落实“以促为主、促控结合”的管理策略,采取以下中后期管理技术措施:合理施肥1.早施、重施花铃肥。施用底肥的棉田于7月上旬结合浇水或在降雨后,追施尿素10-15千克/亩,底肥中不含钾肥的棉田可同时追施硫酸钾5-7千克/亩。没有施用底肥的棉田可追施复合肥(氮、磷、钾各15%左右)40千克/亩。 According to this year’s cotton area in the Yellow River Basin, cotton growing well, some cotton fields cotton development characteristics are later than usual, should be implemented “to promote the main, promote control with ” management strategy, to take the following mid and late management techniques and measures: a reasonable fertilization 1 As early as Shihua fertilizer heavy. In the early July, cotton fields with base fertilizer were combined with watering or after raining, topdressing urea by 10-15 kg / acre. Cotton fields without base fertilizer could be topdressing 5-7 kg / acre of potassium sulfate at the same time. No application of base fertilizer cotton can be topdressing compound fertilizer (nitrogen, phosphorus and potassium about 15%) 40 kg / mu.