提高作物叶面养分吸收的复合型助剂研究

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。

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

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.