摘要： 采用熟性不同的3个陆地棉品种，在肥水充足的生长条件下，研究了棉株不同载铃量对其主要生育性状的影响.结果表明，棉株载铃量对株高、果枝总长、果节总数均有极强的影响，其影响强度随载铃量的增加而增加，累积影响量随棉株生长发育时间的延长而增大；但棉株载铃量对主茎节数、果节平均长度影响不显着。由此分析了蕾铃脱落和棉株旺长之间的关系，以及棉株在一定地力条件下适宜的单株载铃量。

关键词: 陆地棉, 结铃量, 生殖生长, 营养生长

Abstract: Under the condition of satisfactory supply of fertilizers and water for cotton growth, three cotton cuttivars with different maturity types were used in the experiment. Different boll loads were formed through picking blooming flowers in a cotton plant. Effects of different boll loads on major developmental traits were studied. The results showed that boll load affected the development of plant height, total length of branches, total number of nodes very significantly. The more the boll boad is , the more it will affect these traits. The cumulative effect will become larger as the development time increases. However, boll load has not a significant effect on the leaf number of the main stem and the average lengty of internode of brances. Based on the results , the relationship between vegatative growth and reproductive growth was analyzed. The optimum boll load in a cotton plant was estimated for a specific land, and the most direct reason for plant over growth was further assured to be high abscission rate and low boll load. The meaning from the experimert for cultivation reseach was also discussed.

Key words: Cotton (G,Hirsutum L.), Boll load, Reproductive growth, Vegetative growth