提高作物叶面养分吸收的复合型助剂研究  

Research of mixed adjuvants on the absorption of nutrient elements in crop leaf

作　　者：肖艳[1] 曹一平[1] 王敬国[1] 陈凯[1] 

机构地区：[1]农业部植物营养学重点实验室教育部植物土壤相互作用重点实验室中国农业大学资源与环境学院植物营养系,北京100094

出　　处：《植物营养与肥料学报》2004年第3期281-285,共5页Journal of Plant Nutrition and Fertilizers

基　　金：国家高科技产业化研究863课题(2001AA246062)资助。

摘　　要：本文研究了含有黄腐酸在内的复合型表面活性剂对白菜和花生叶片硼、锰吸收的影响。复合表面活性剂通过降低喷施液的表面张力,明显增加了供试作物叶片对硼、锰的吸收。单一黄腐酸对喷施液的表面张力影响不大,可通过络合作用促进硼、锰的吸收。黄腐酸与表面活性剂结合使用表现出明显的复合效应,使喷施液的表面张力低于作物叶片临界表面张力,显著促进了白菜和花生叶片对硼、锰的吸收效果,可以用复合型助剂提高作物叶面对养分的吸收。Effects of FA and mixed surfactants on the absorption of B and Mn in cabbage and peanut leaf were studied. Mixed surfactants could decrease surface tension of the foliar fertilizer solution. It improved B and Mn uptake in cabbage and peanut leaf. Effect of FA on surface tension of the solution is not obviously. It also improved B and Mn uptake in cabbage and peanut leaf as chelating reagent. Composite systems of surfactants and FA could produce synergism, which could decrease surface tension of the solution significantly. The surface tension of the solution equal to the critical surface tension of cabbage leaf and lower than the critical surface tension of peanut leaf, so the mixed adjuvants could be used to improve B and Mn uptake by crops.

关 键 词：表面活性剂 临界表面张力 复合效应 

分 类 号：TQ452[化学工程—农药化工]