留叶枝棉花的成铃规律

试验设置留叶枝 (简化栽培 )处理 ,以去叶枝 (常规栽培 )为对照 ,研究留叶枝棉花的成铃规律。结果表明 :棉花留叶枝有利于早发、早结铃 ,8月 5日前成铃率比去叶枝处理高 8 38个百分点 ;留叶枝棉果枝成铃与去叶枝棉果枝成铃相比 ,单铃籽棉重、单铃铃壳重、铃壳比、单铃种子数和衣分均无明显差异 ;留叶枝棉花的叶枝成铃期后延 ,成铃大多集中在光照富照期内 (7月 2 1日～ 8月 2 0日 ) ;留叶枝处理中叶枝铃重明显低于果枝铃 ,叶枝铃全生育期平均铃重为 3 5 7g ,比果枝铃 4 5 6g低 2 7 73%。

Bolling Regularity of Cotton Plant Retaining Leafy Shoots

Bolling regularity of cotton plant retaining leafy shoots was studied regarding retaining leafy shoots as treatment and moving leafy shoots as check.The treatment of retaining leafy shoots is beneficial to the formation of early bolls,and boll setting percentage of which before 8/5 (month/day) was 8 38 percentage higher than that of CK.There were no significant differences of seed cotton per boll,shell weight per boll,boll shell weight/boll weight,number of seed per boll,lint percentage between the fruit shoots of leafy shoots retained cotton and the fruit shoots of leafy shoots moved cotton.Bolling stage of leafy shoots of leafy shoots retained cotton was defered to sunlight rich period from July 21 to August 20.Boll weight of leafy shoots from leafy shoots retained cotton was 3 57 g averagely during the whole development stage,27 73% lower than that of fruit shoots(4 56 g).