湖南农业大学学报（自然科学版）2024，Vol.50Issue(1)：15-22,8.DOI:10.13331/j.cnki.jhau.2024.01.003
夏播短季栽培对棉花成铃时空分布特征及产量构成的影响
Effects of summer-sowing short-season-cultivation on spatial-temporal characteristics of boll-formation and yield composition of cotton
摘要
Abstract
In order to understand the spatial-temporal distribution characteristics of cotton boll-formation under summer-sowing short-season-cultivation conditions,10 cotton lines of different genotypes were used as experimental materials,and the occurrence of bud bolls in each part of cotton plants was recorded by plant diagrams.The results showed that in terms of time distribution,the peak period of buds was 56-80 days after seeding,the peak period of flowering was 77-96 days after seeding,and the peak period of boll-formation was 85-101 days after sowing,and the accumulation of reproductive organs(buds,flowers and bolls)of different varieties/lines was significantly different.Regarding to the spatial distribution,P56-3,07 single 12,07 single 6 and 07 single 7 showed the most bolls in the middle,while the rest of the varieties showed the most bolls in the lower part.In addition,the distribution of boll-formation rates of P56-3,07 single 6 and 07 single 7 also showed"hollow shape in the lower fruit branches".The yield structure of each line was significantly different,and the number of bolls per plant in 2003-29 was 19.53%-119.55%higher than those of other cultivars,and the yield of seed cotton and lint cotton was 21.82%-106.32%and 22.46%-134.05%higher than those of other varieties,respectively.Among 10 genotypes,the strain 2003-29 showed optimal characters including uniform boll-formation,less shedding,the highest number of bolls and yield per plant and thus it was suitable for planting in the summer-sowing short-season-cultivation mode.Therefore,the summer-sowing short-season-cultivation of cotton was mainly concentrated in August,and the traditional ratio of"three peaches"was not applicable to measure the boll-formation structure of high-yield and high-quality cultivation.关键词
棉花/夏播短季栽培/成铃/时空分布/产量Key words
cotton/summer-sowing short-season-cultivation/boll-formation/spatial-temporal distribution/yield分类
农业科技引用本文复制引用
张宁,许豆豆,刘玉杰,刘爱玉,屠小菊..夏播短季栽培对棉花成铃时空分布特征及产量构成的影响[J].湖南农业大学学报（自然科学版）,2024,50(1):15-22,8.基金项目
湖南省棉花产业技术体系栽培与良种繁育岗位专家项目(湘农发[2022]31号) （湘农发[2022]31号）
湖南省农业专项(湘财建指[2023]98号) （湘财建指[2023]98号）
