棉花从开花到吐絮约５０～６０天，我县一般在７月初到９月上旬。此期棉株逐渐由营养生长与生殖生长并进，转向以生殖生长为主，边长叶、茎、枝，边现蕾、开花、结铃，是决定棉花产量和品质的关键时期。根据多年实践，初花期稳长，盛花期生长旺盛，后期不早衰。初花期株高... Cotton flowering from blooming to about 50 to 60 days, my county is generally early July to early September. In this period, the cotton plant gradually moved from vegetative and reproductive growth to the reproductive growth. The long leaves, stems, branches and buds squared, flowering and boll forming are the key periods that determine the cotton yield and quality. According to many years of practice, the initial flowering period is steady, full bloom is vigorous, and the late period is not premature. The first flowering plant height ...