前言在化学治虫技术日益普及的条件下,棉花属于虫媒花这一性质已在很大程度上失去意义,花朵很少有媒虫光临了,基本上都靠自花授粉结实,而这种习性与柱头长短有密切关系。据郭绪全等研究,短柱头子房比长柱头具有脱落率低、成铃率高、子指大、每铃棉子数多、发育不良种子百分率低的优点。本研究除研究长短柱头的结实率外,主要研究长短柱头授粉部位和数量的不同及其结铃、脱落的关系。 Preface In the growing popularity of chemical pest control technology, the nature of cotton belonging to the insect-like flower has largely lost its meaning. Few flower-borne insects visit and are basically self-pollinated and strong, and this habit and stigmas Length is closely related. According to Guo Xu et al., The short stump ovary has the advantages of low rate of shedding, high boll rate, large number of fingers, large number of cotton bolls per bell and low percentage of stunted seeds. In addition to studying the seed setting rate of long and short stigma, this study mainly studied the difference of pollination sites and numbers of long and short stigma and the relationship between them.