本文研究了棉花在高温条件下柱头长短变化及其与产量的关系,并寻求克服由高温引起对产量不利影响的措施。研究结果表明,在高温高湿条件下,柱头明显伸长,长柱头花的比例增加。长柱头花结铃率低,铃重小,影响产量。人工辅助授粉可提高结铃率,增加单铃种子数,减低不孕籽率,使单铃重增大,从而提高皮棉产量,增进皮棉品质。 In this paper, the relationship between the length of stigma and the yield of cotton under high temperature conditions was studied, and the measures to overcome the unfavorable effects caused by high temperature on yield were studied. The results showed that under the condition of high temperature and high humidity, the stigma was obviously elongated and the proportion of long stigma increased. Long stigma flower boll rate is low, boll weight, affecting the yield. Artificial assisted pollination can increase the boll rate, increase the number of single boll seed, reduce the infertility seed rate, and increase boll weight, so as to increase the lint yield and improve lint quality.