棉花吐絮期是指棉铃吐絮开始至收花结束这一段时期。一般在8月下旬到11月上旬。此时棉株营养生长已停止,生殖生长日趋缓慢。一般不徒长,但易早衰。故田间管理中心是:促早熟、防早衰、增铃重。长势旺盛的地块要防贪青晚熟。主要田间管理要点是:1 补水补肥 秋旱严重地块,及时浇水,以水促 Boll cotton boll opening refers to the beginning of cotton boll flowering to close the end of this period. Generally in late August to early November. At this point cotton vegetative growth has stopped, reproductive growth increasingly slow. Generally not lenient, but easy to premature aging. Therefore, field management center is: to promote early maturity, premature senility, boll weight. Growing plots to prevent corruption and late maturity. The main field management points are: a replenishment fertilizer autumn drought serious plots, watering in a timely manner to promote water