短季棉多茎株型成铃时空分布研究

Preliminary report on the space-time distrbution of boll development of multi-stem short-season cotton

本文以短季棉常规株型为对照,分析了不同播期条件下,短季棉多茎株型成铃及单铃重的时间和空间分布特点;短季棉多茎株型单株开花结铃时间晚,结铃集中,优质铃结铃期和优质铃部位的成铃比常规株型明显增加;单铃重比常规株型同时间开花的成铃高,但比常规株型同节位的铃重低。综合来看,多茎株型单株成铃显著增加,但平均铃重较低。分析认为:短季棉多茎株型成铃分布合理、早播不易早衰,可以防止烂铃,有较高的生产应用价值。

Taken conventional plant type short season cotton as control, the space-time distribution of boll development and single boll weight of multi-stem short-season cotton under different seeding date was analyzed in this paper. For multi-stem short-season cotton, flowers and bolls developed in late stage and concentrated in time and space, and the number of high quality boll was significantly higher than that of control. Single boll weight was higher than the one of same flowering time but lower than the one of same node of the control. Generally, the total boll numbers of multi-stem cotton was significantly increased, but single boll weigh on average was lower. In summary, the boll development of multi-stem short-season cotton is appropriate, early seeding does not result in early ageing, which can avoid boll rot, and has a great value for production.