摘要
研究结果表明,棉花单株叶枝的变化幅度为0～5盘,且呈正态分布,单株分枝2～3盘比例最高,平均单株叶枝数为2.81盘。叶枝成铃占全株成铃的34％,单株总成铃数与单株着生叶枝数呈极显著的正相关。叶枝的发生数量及成铃数受制于单株占有空间的大小。留叶枝棉花较去叶枝棉花单株平均成铃增加12.2％,皮棉单产增加3.05％～8.10％。虽然叶枝铃的单铃重较主茎铃铃重低0.35g,衣分率低1.5个百分点,但纤维品质仍属同一档次。
Field tests on the rule of cotton vegetative branch development and its contribution to the lint yield were carried out at Changde Hunan in 1995 - 1998. The results of observation showed that each cotton plant can develop 0 - 5 vegetative branch. It was filed for normal distribution. Most of cotton plants produced 2-3 vegetative branch respectively and the average was 2.81 branches. The number of boll setting on the vegetative branch was 34% as that on whole plant. The number of boll correlated with vegetative branch on the cotton plants positively. Their correlation coefficient was significant. The number of vegetative branch and boll on the cotton plant was limited by the planting density of cotton. The number of boll per plant and the lint yield could be increased 12.2% and 3.05% - 8.0% respectively by reserved the vegetative branch than that of pruned plant. Though the individual boll weight setting on the vegetative branch was 0.35g lighter, the lint was 1.5 percentage lower than that setting on the fruiting branches. But both the fiber quality had similar level.
出处
《中国农学通报》
CSCD
1999年第2期18-20,共3页
Chinese Agricultural Science Bulletin
基金
农业部"棉花简化栽培"项目
关键词
棉花
叶枝
发生规律
成铃数量
Cotton Vegetative branch Rule of development Number of boll
