一、对棉花多毛和少毛品种蚜害指数的均数差异进行t值测定,结果为高度显著,证明棉叶的多毛性状有抗蚜作用。二、棉花茸毛是几个细胞簇生在一起或是单细胞的。分布在叶脉上,主脉多,侧脉少。随着植株生长发育,茸毛逐渐增加,对蚜虫的抗性也随之提高。三、本文介绍BPA等25个茸毛密度大,纤维较长的多茸毛棉花品种,供抗蚜性研究或育种用。 First, the cotton hirsutum and hairless varieties of aphid damage index average number of t-value determination, the result is highly significant, prove that cottony hairy have anti-aphid effect. Second, cotton hair is a few cells clustered together or single cell. Distributed in the veins, the main artery and more lateral veins less. With the growth and development of plants, hair increased, the resistance to aphids also increased. Third, this article introduces BPA and other 25 hairy density, long fiber, more hairy cotton varieties for aphid research or breeding use.