棉花从始蕾到初花这段时间称为蕾期。蕾期的长短随着品种、环境条件和栽培措施而有所变化。一般陆地棉品种在4月中旬播种的,6月中旬现蕾,蕾期约为22—25天。蕾期最适宜温度是20—30℃,在这个温度范围内,棉株可五天出生一个果枝,5—6天增加一个果节。低于20℃生长极为缓慢,高于35℃则侧芽发育受抑制,现蕾推迟。 Cotton from the beginning of bud to flower this period known as the bud. The length of the bud stage varies with variety, environmental conditions and cultivation practices. General varieties of cotton sown in mid-April, the bud in mid-June, bud stage is about 22-25 days. Budding the most appropriate temperature is 20-30 ℃, in this temperature range, cotton plants can be born five days a fruiting branch, 5-6 days to increase a fruit section. Growth below 20 ℃ was very slow, while above 35 ℃, lateral bud development was inhibited and budding was postponed.