北疆棉区增效缩节胺应用剂量对棉花农艺和经济性状的影响  

Effects of DPC^+ Application Dose on Agronomic and Economic Traits of Cotton in Northern Xinjiang

作　　者：韩焕勇[1,2] 杜明伟[1] 王方永[2] 陈兵[2] 田晓莉[1] HAN Huan-yong;DU Ming-wei;WANG Fang-yong;CHEN Bing;TIAN Xiao-li(Engineering Research Center of Plant Growth Regulator,Ministry of Education,China Agricultural University,Beijing 100193,China;Cotton Institute,Xinjiang Academy Agricultural and Reclamation Science,Xinjiang Shihezi 832003,China)

机构地区：[1]中国农业大学植物生长调节剂教育部工程研究中心,北京100193 [2]新疆农垦科学院棉花研究所,新疆石河子832003

出　　处：《西南农业学报》2019年第2期327-330,共4页Southwest China Journal of Agricultural Sciences

基　　金：国家重点研发计划(2017YFD0101600);国家科技支撑计划(2014BAD09B03);新疆农垦科学院引导计划(64YYD201401)

摘　　要：【目的】研究增效缩节胺(DPC^+)应用剂量对北疆早熟棉花农艺及经济性状的影响,为大田应用DPC^+进行化学封顶提供依据。【方法】以"新陆早53号"为材料,设置450、750、1050 mL/hm^(2 ) 3个处理,研究了不同剂量DPC^+对棉花株高、果枝台数、产量性状和纤维品质的影响。【结果】与对照相比,随DPC^+剂量增加,株高和果枝台数均呈现降低趋势,但单株结铃有增加趋势,单铃重有降低趋势,各处理间纤维品质的差异不大。综合来看,中剂量750 mL/hm^(2 )处理籽棉产量和皮棉产量最高。【结论】生产中可根据棉花长势,在中剂量的基础上,适当调整DPC^+用量,保证效益收益,持续提升棉花简化栽培的潜力。【Objective】This paper studied the effects of DPC^+application on the agronomic and economic traits of early maturing cotton in northern Xinjiang to provide the basis for application of DPC^+chemical capping under field conditions.【Method】‘Xinluzao 53’was used as the experimental material,and 3 different doses of DPC^+treatments(450,750 and 1050 mL·hm^2)were set to investigate the effects on cotton plant height,number of fruit branches,yield traits and fiber quality.【Result】Compared with the control treatment,the plant height and the number of fruiting branches showed a decreasing trend,but the number of bolls per plant showed an increasing trend,and the weight of single bolls showed a decreasing trend with the increase of DPC^+dose.The difference in fiber quality is not significant between the treatments.Taken together,the cotton had the highest seed yield and lint yield under the medium-dose of 750 mL/hm^2 treatment.【Conclusion】In production,we can adjust the amount of DPC^+on the basis of moderate doses according to the growing trend of cotton to ensure the benefits and increase the potential for cotton cultivation.

关 键 词：增效缩节胺 剂量 农艺性状 经济性状 棉花 

分 类 号：S562[农业科学—作物学]