Effects of Planting Density on Agronomic,Fiber Quality and Yield Traits of Different Plant Types of Sea-Island Cotton
In order to study the response of different plant types of sea-island cotton to planting density,two loose plant types'Yuanlong28','Yuanlong 61'and compact plant type'Xinhai 45',were selected as materials for research,and the variations in agronomic,quality and yield traits under four distinct planting densities were studied.The results showed that with the increase of planting density,plant height,plant width,bolls per plant,boll weight,seed index,micronaire,upper half mean length,fiber strength,length uniformity and fiber maturity showed a decreasing trend,while bolls per plant in middle and lower part of fruit branches increased.The plant height,plant width and bolls per plant in flowering and boll stage were significantly different among different densities.The loose plant type materials had long fruit branches,stable growth and great adaptability,and the suitable planting density was 0.21 million-0.27 million plants/ha.The compact plant type material had the characteristics of short fruit branches,fast growth,vigorous,strong boll setting,and high requirements for nutrients.Cultivation methods should be adjusted according to the actual growth,so that the growth advantage can be transformed into the yield advantage,and the yield can be further improved.
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