棉铃垂直分布对不同棉花品种产量与品质的影响研究OA

[Objective]To explore the impact of the vertical distribution of cotton bolls on the yield and quality of four cotton varieties:Tahe 2,Zhongmian 9003,Xintamian 5,and Xinluzhong 82.[Method]Using Tahe 2,Zhongmian 9003,Xintamian 5,and Xinluzhong 82 as experi-mental materials,the impact different vertical distributions(upper,middle,and lower)of cotton bolls on the components of cotton yield and fiber quality was systematically analyzed by setting up samples.[Result]The vertical distribution of cotton bolls significantly affected the aver-age boll weight,lint percentage and other yield indicators of each variety,in the advantage of average bolls weight in the upper,middle and lower parts of the Tahe 2 and Zhongmian 9003 was obvious.vertical distribution of cotton bolls significantly affected the fiber length,breaking tenacity,and micronaire value and other quality indicators of each variety.Arnong thwin,Xinluzhong 82 performs berrer in fiber length,hsa amoderate breaking srtength,and a relatively low micnonaire.[Conclusion]All four varieties showed better yield and fiber quality,meeting the standards of type II varieties.The big boll variety Tahe 2 and the high lint percentage variety Zhongmian 9003 had obvious yield advantages and were suitable for high-yield cultivation.The Xintamian 5 had a slightly higher micron value and was more suitable for processing of coarse yarn.The new Xinluzhong 82 had more stable fiber quality and was suitable for planting in areas with high requirements for fiberity.The results of this study can provide a theoretical basis for the reasonable regulation of plant type structure and boll spatial distribution in high-yield and high-quality cotton cultivation.