助剂对静电喷雾液剂电导率及沉积量的影响  

Effect of Adjuvant on Conductivity and Deposition of Electrochargeable Liquid

作　　者：任立瑞 陈福良[1] 尹明明[1] REN LiRui;CHEN FuLiang;YIN MingMing(Institute of Plant Protection,Chinese Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management in Crop,Ministry of Agriculture,Beijing 100193)

机构地区：[1]中国农业科学院植物保护研究所/农业部作物有害生物综合治理重点实验室,北京100193

出　　处：《中国农业科学》2018年第23期4459-4469,共11页Scientia Agricultura Sinica

基　　金：国家重点研发计划(2017YFD0200301)

摘　　要：【目的】优化静电喷雾液剂配方,研究助剂对静电喷雾液剂电导率及沉积量的影响,探寻二者之间的关系,为降低农药使用量,实现农业可持续发展提供科学依据。【方法】采用新型环保溶剂HDBE和NCC,以二甲亚砜、N-甲基吡咯烷酮和异佛尔酮作为助溶剂,设定助溶剂用量分别为0、3%、5%、7%和10%,以传统溶剂S200#作为对照。根据静电喷雾液剂质量技术指标对不同配方进行筛选。分析助剂种类及用量的变化对阿维菌素和呋虫胺两种静电喷雾液剂电导率的影响。同时,在施药前测定靶标叶面积,施药后用丙酮反复冲洗、过滤、旋蒸、定容,最后采用高效液相色谱(HPLC)测定靶标叶片上农药有效成分的沉积量,探究助剂种类和用量对黄瓜和番茄叶片正、背面沉积量的影响,分析制剂电导率与沉积量之间的关系,评价静电喷雾包抄效应。【结果】筛选出6个符合质量技术指标要求的环保型静电喷雾液剂配方;制剂电导率并非各组分电导率的加权平均数,而是各组分相互作用的结果;对于极性不同的农药有效成分配制的静电喷雾液剂,助剂种类和用量的改变对电导率和沉积量的影响趋势相同。当有效成分为非极性农药阿维菌素时,其对制剂整体电导率几乎无影响,而当采用极性较大的农药呋虫胺时,制剂整体的电导率得到显著提高,在相同助剂条件下,高出阿维菌素制剂近百倍。当溶剂为HDBE时,电导率较小,电导率和沉积量随助溶剂质量分数的提高增幅较大,差异显著。当溶剂为NCC时,由于其本身电导率较大,二者随助溶剂用量的提高增幅较小,不同配方之间的电导率差异减小。当助溶剂同为二甲亚砜时,由HDBE、NCC作为溶剂制备的静电喷雾液剂电导率及沉积量较传统溶剂S200#均显著增加,其中电导率高出5倍以上,沉积量高出1.5倍以上;静电喷雾液剂在黄瓜叶片正、背面的沉积量均大于番【Objective】The objective of this study is to optimize formula and research the effects of different adjuvants on conductivity and deposition of the electrochargeable liquid and the internal relationship, and to provide scientific guidance for reducing the use of pesticides and achieving sustainable agricultural development.【Method】New environment-friendly solvents HDBE and NCC were used with dimethyl sulfoxide, N-methyl pyrrolidone and isophorone as cosolvents. The contents of cosolvents were set as 0, 3%, 5%, 7%, and 10% respectively, and the traditional solvent S200# was used as control. Qualified formulas were screened according to the technical index of electrochargeable liquid. The effect of the different contents of adjuvants on conductivity of abamectin and dinotefuran electrochargeable liquid was analyzed. At the same time, in order to study the effect of the different contents of adjuvants on the deposition on the front and back of cucumber and tomato leaves, explore the relationship of preparation conductivity and deposition and analyze electrostatic outflank effect. The area of target leaves was measured before pesticide application, and washed repeatedly with acetone after the treatment. The active ingredient on target leaves was determined by high performance liquid chromatography(HPLC) after process of filtration, rotary steaming and dilution to graduation with solvent.【Result】Six environment-friendly electrochargeable liquid formulas that meet the requirements of quality and technical specifications were screened. The conductivity of the formula was not a weighted mean of the individual component, but rather the final result of the interaction of the components. For the electrochargeable liquid prepared by the active components of pesticides with different polarity, the change of the species and contents of the adjuvant had the same effect trend on the conductivity and deposition. It had almost no effect on the overall conductivity of the preparation when the active ingredient was the n

关 键 词：静电喷雾液剂 助剂 电导率 沉积量 阿维菌素 呋虫胺 

分 类 号：S491[农业科学—植物保护]