四、花铃期管理花铃期是长绒棉以生殖生长为主的重要生长季节,从开花到结铃结束约有两个月左右时间,要求大量营养物质供给开花结铃需要。在栽培上要以“促”为主,“促”中有控,防止后期棉株早衰,棉铃长不足。但也不能“促”过头,肥水施用过多或施肥过晚,造成棉株贪青晚熟,使后期结的铃不能充分生长,影响产量和品质。1.合理施用肥水:在肥水管理上,要看 Fourth, the management of flowering period The flowering period is an important growth season for long staple cotton reproductive growth, from flowering to the end of the bell about two months or so, requiring a large number of nutrients supply flowering bell needs. In cultivation should be “promoting” the main, “promoting” in the control, to prevent the late cotton plant premature aging, boll length shortage. But it can not “promote” too much, too much fertilizer or excessive fertilization, resulting in late blooming cotton plants, late bell can not be fully grown, affecting yield and quality. 1. Rational use of fertilizer and water: fertilizer and water management, depends on