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棉花从开始现营到开花的天数为营期，约25天左右。根据棉花内部的生理活动规律，应采取如下管理技术：1．稳施蕾肥对基肥不足，未施种肥，棉株表现缺肥销棉田，应适当早施和多施；反之，则适当晚施和少施。对高产棉田，每亩追肥总量15～25公斤硫铁，分2～3次施，配合棉籽饼15～
Cotton from the beginning of the camp to flowering days for the camp, about 25 days. According to the rules of physiological activities within cotton, the following management techniques should be adopted: 1. Stabilization of the application of fertilizer on the lack of basal fertilizer, no fertilizer, cotton plant performance lack of fertilizer sold cotton fields, should be appropriate as early as and more Shi; the other hand, appropriate evening and less application. For high-yielding cotton fields, the total amount of topdressing fertilizer per acre is 15-25 kg of iron and iron, divided into 2 or 3 times, with cottonseed cake 15 ~