Effects of Different Sowing Dates on Cotton Yield,Fiber Quality and Their Components
Liu Guodong
Xu Qinglai
Zhou Juan
Yang Zhongxu
Shi Jialiang
Wang Furong
Zhang Jun
Abstract：Late sowing is benefit to mechanical picking of cotton,but influences the yield and fiber quality.With ten cotton cultivars as materials,two sowing dates,April 24 and May 12,were designed to study their effects on cotton yield and fiber quality in order to select cultivars suitable for late sowing.The results showed that the length and fineness of fiber were significantly affected by sowing date.Under late sowing,the fiber length increased significantly by 6.49％,and the fiber fineness changed differently with different cultivars;the seed index increased significantly;the single boll weight was significantly affected by the interact of sowing date and genotype.Late sowing decreased the seed cotton yield by 6.64％ of cultivars with longer growth period,but increased that of cultivars with shorter growth period or the boll opening rate over 80％ sowed in late spring.This study could provide scientific references for breeding cotton cultivars suitable for mechanical picking and promoting the mechanization production of cotton in the valley of Yellow River.
Keywords：CottonSowing dateYieldFiber qualityMechanized production
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 65-68 )