高产优质是棉花育种的主攻目标，产量构成因素中的铃重，铃数遗传力低，选择准确性差而难以获得明显的进展，并且进一步改良潜力较小。在棉花整个生育期间，花铃期间（开花———吐絮）是一个至关重要的时期，是影响产量及品质的重要生育时期。本文从花铃期的长短对棉花产... High yield and high quality are the main targets of cotton breeding. The boll weight and boll number of the yield components are low, the selection accuracy is poor and it is difficult to obtain significant progress, and the potential for further improvement is small. During the whole growth period of cotton, the period of flowering (flowering --- bolting) is a crucial period, and it is an important growth period that affects yield and quality. This article from the length of the flower bell cotton production ...