棉花学报2023，Vol.35Issue(6)：459-472,14.DOI:10.11963/cs20230033
"宽早优"植棉模式下不同株距配置对棉花生长及产量和纤维品质的影响
Effects of different plant spacings on the growth,yield and fiber quality of cotton under the"Kuanzaoyou"planting pattern
摘要
Abstract
[Objective]This research aims to investigate the optimum plant spacing and density for"Kuanzaoyou"planting pattern in the 7th Division of The Xinjiang Production and Construction Corps,so as to provide a theoretical foundation for establishing a high-yield and efficient cultivation system for local cotton fields.[Methods]Field trials were carried out in 2021-2022,and the planting pattern of"Kuanzaoyou"(76 cm equal row spacing,the film width of 2.05 m)with one film-three rows-three belts was employed.Split-plot design was adopted;the main plot was cotton variety(Xinluzao 61 and K07-12),and the subplot was plant spacing(5.5 cm,7.5 cm,9.5 cm,11.5 cm,13.5 cm,and 15.5 cm,a total of six levels).The effects of different treatments on cotton growth period,agronomic traits,soil and plant analyzer development(SPAD)value,dry matter mass,canopy structure,yield and fiber quality were studied.[Results]With the increase of plant spacing,the growth period of tested cotton varieties was shortened,the number of fruiting branches per plant,plant height,and stem diameter generally increased,the height of the first fruiting branch node exhibited a fluctuating decrease.SPAD values showed no significant difference under different plant spacing treatments.At the full flowering,peak boll setting and boll opening stage in 2022,with the increase of plant spacing,the dry matter mass of reproductive organs initially increased and then decreased,and the leaf area index(LAI)exhibited a fluctuating decrease,and diffuse non-interceptance(DIFN)showed a fluctuating increase.The differences were not significant for lint percentage,seed cotton yield and lint cotton yield of same cotton variety under different plant spacing treatments in 2021.In 2021 and 2022,the seed cotton yield and lint yield of Xinluzao 61 and K07-12 were higher and the fiber quality was better under the 9.5 cm plant spacing.The fiber quality of Xinluzao 61 was more stable,as there were no significant differences in upper half mean length,uniformity index,micronaire,breaking strength and breaking elongation of the fiber among different plant spacing treatments.[Conclusion]Under the"kuanzaoyou"planting pattern,when the plant spacing was 9.5 cm(theoretical planting density was 138 500 plants·hm-2),Xinluzao 61 and K07-12 could obtain better LAI and dry matter mass,higher seed cotton yield and lint yield,and better fiber quality could be maintained.关键词
株距/密度/"宽早优"植棉模式/农艺性状/干物质积累/冠层结构/产量/纤维品质Key words
plant spacing/density/"Kuanzaoyou"cotton planting pattern/agronomic traits/dry matter accumulation/canopy structure/yield/fiber quality引用本文复制引用
王洪彬,贺立强,张东风,宋美珍,王海娟,王志刚,刘海燕.."宽早优"植棉模式下不同株距配置对棉花生长及产量和纤维品质的影响[J].棉花学报,2023,35(6):459-472,14.基金项目
新疆生产建设兵团第七师胡杨河市财政科技计划项目(2021c11,2023c11) （2021c11,2023c11）
2020年新疆生产建设兵团民生实事"提升农业科技水平"项目 （）
