摘要
为研究不同调控方式对南疆无膜棉生长及结铃特性的影响,设置5种调控模式,以全期不调控为对照(CK),观测无膜棉农艺性状及结铃性状指标。结果表明:全促法能显著促进株高与总果节长度,而改良法处理的农艺形状表现较好,其绿叶数、茎粗、主茎节数、果台数、总果节数最多,优化法的农艺性状表现虽不突出,但个体发育较好,有利于产量的形成;改良法和优化法的平均值LAI最大,达2.65和2.67,且其吐絮期LAI为2.84和3.01,高于其他处理,表明优化法和改良法能较好调节群、个体生长,优化群体功能叶面积动态;各处理蕾铃脱落率大小为CK>全促法>改进法>改良法>传统法>优化法;改良法的下部、内围结铃最多,优化法的中部、内围结铃最多,其产量最高,达5419.09,5369.27 kg·hm^(-2),表明南疆无膜棉采取“前促、中控、后保”和“苗促、蕾稳、花调、后保”的调控策略最有利于协调生长和高产形成,可作为南疆无膜棉生长调控策略参考。
In order to study the effects of different regulation modes on the growth and boll-setting characteristics of non film mulched cotton in Southern Xinjiang,five regulation methods were set up,and the whole-period non-regulation was used as control(CK)to observe the agronomic traits and boll-setting traits of membrane free cotton.The results showed that the promotion method could significantly promote plant height and total fruit node length,while the improved method had better agronomic traits,with the largest number of green leaves,stem diameter,main stem nodes,fruit sets and total fruit nodes,Although the agronomic traits of the optimized method were not outstanding,the individual development was good,which was beneficial to the formation of yield;The average LAI of the improved method and the optimized method were the largest,reaching 2.65 and 2.67,and the LAI of the boll opening period were 2.84 and 3.01,which were higher than that of other treatments,indicating that the optimized method and the improved method could better regulate the growth of groups and individuals and optimize the dynamics of functional leaf area;The order of shedding rate of buds and bolls was CK>promotion method>adjustment method>improved method>traditional method>optimization method;The lower and inner part bolls of the improved method were the most,and the middle and inner part bolls of the optimized method were the most,with the highest yield of 5419.09 and 5369.27 kg·hm^(-2),indicated that the regulation strategies of"promoting in the early stage,controlling in the middle stage and maintaining in the later stage"and"promoting in the seedling stage,stabilizing in the bud stage,regulating in the flowering stage and maintaining in the later stage"were most conducive to coordinated growth and high yield formation,it could be used as a reference for the growth regulation strategy of film-free cotton in Southern Xinjiang.
作者
林熬
高振
王冀川
石元强
LIN Ao;GAO Zheng;WANG Jichuan;SHI Yuanqiang(College of Plant Science,Tarim University,Alar,Xinjiang 843300,China)
出处
《天津农业科学》
CAS
2021年第9期10-15,28,共7页
Tianjin Agricultural Sciences
基金
南京农业大学-塔里木大学联合基金项目(KYLH201901)
第三师图木舒克市科技计划项目(YJ2019CX05
YJ2019CX01)。
关键词
调控策略
无膜棉
结铃特性
产量
regulation strategy
film-free cotton
boll setting characteristics
yield
作者简介
林熬(1997—),男,新疆阿拉尔人,在读硕士生,主要从事作物栽培生理方面研究;通讯作者:王冀川(1968—),男,河北廊坊人,教授,硕导,主要从事作物高效栽培生理生态方面研究。
