百泰不同喷施浓度对棉花叶绿素、养分含量的影响  

Different Spray Concentrations of Cabrio Top: Effect on Chlorophyll and Nutrient Content of Cotton

作　　者：曹琦[1] 董红强[1] 刘振亚[1] 支金虎[1] Cao Qi;Dong Hongqiang;Liu Zhenya;Zhi Jinhu(College of Plant Science, Tarim University, Alar Xinjiang 84330)

机构地区：[1]塔里木大学植物科学学院,新疆阿拉尔843300

出　　处：《中国农学通报》2018年第10期115-119,共5页Chinese Agricultural Science Bulletin

摘　　要：为了研究百泰不同喷施浓度对棉花叶绿素、养分含量的影响,笔者采用不同浓度梯度的百泰于棉花初花期和花铃期进行喷施,并于喷药后测定全株及根、茎、叶中全氮、全磷、全钾含量和棉花功能叶叶绿素含量(SPAD值)。结果表明:适当浓度(450~750 g/hm^2)喷施对叶绿素积累及根、茎中全氮、全磷含量具有显著促进作用,但会降低棉花叶片中全氮含量;不论是棉花根系、茎秆还是叶片中,不同浓度间百泰喷施对全钾含量差异不显著;过量喷施(1050 g/hm^2)与清水处理间对养分差异不显著。一定浓度的百泰在棉花生长中后期可以促进叶绿素的积累和氮、磷元素的吸收,达到以药促肥的效果。The paper aims to study the effect of different spray concentrations of Cabrio Top on chlorophyll and nutrient content of cotton. The authors sprayed different concentrations of Cabrio Top during initial flowering period and flowering and boll-setting period of cotton, and then measured the content of total nitrogen, total phosphorus, total potassium in whole plant, root, stem and leaf and chlorophyll content in function leaves. The results showed that： spraying Cabrio Top with proper concentration （450-750 g/hm^2） had significant promoting function on the accumulation of chlorophyll and the content of total nitrogen, total phosphorus in the root and stem, but it could reduce the total nitrogen content in cotton leaves; the total potassium content in cotton root, stem and leaf was not significantly affected by spraying different concentrations of Cabrio Top; the difference between excessive spray （1050 g/hm^2） and water treatment was not significant. Spraying a certain concentration of Cabrio Top in the middle and later periods of cotton growth can promote the accumulation of chlorophyll and the absorption of nitrogen, phosphorus, to achieve the role of pesticides in promoting fertilizer absorption.

关 键 词：百泰 棉花 叶绿素 养分 

分 类 号：S131.3[农业科学—农业基础科学]