10%吡虫啉雾滴在青菜叶面上蒸发过程的研究

Study on Evaporation Processes of 10% Imidacloprid Droplets on the Leaves of Brassica chinensis var. chinensis

研究了3种不同种类的表面活性剂(w-w104,Tech-408,L-911)和添加比例[0(对照,CK),0.03%,0.1%],当添加w-w104、Tech-408和L-911等3种表面活性剂,添加比例为0.03%时,10%吡虫啉滴在青菜叶面上最大扩展面积的平均值分别是对照的1.10,12.4,12.5倍,10%吡虫啉雾滴蒸发时间的分别比对照缩短了15%,56%,53%。当添加比例为0.1%时,最大扩展面积的平均值分别是对照的1.32,21,25倍,蒸发时间分别比对照缩短了31%,75%,73%。结果表明,在10%吡虫啉雾滴中添加表面活性剂可以增大农药雾滴的扩展面积和缩短蒸发时间,其中以添加0.1%的表面活性剂L-911效果最明显,对在青菜上施药时农药助剂的添加提供了科学依据。

Three different kinds of surfactants （w-w104,Tech-408 and L-911） and rate of mixing [0 （CK）,0.03%,0.1%）] were studied in this study,when the three surfactants （w-w104,Tech-408 and L-911） were added and the added ratio was 0.03%,the average values of maximum expansion area of 10% imidacloprid droplets on the leaves of Brassica chinensis var.chinensis were 1.10,12.4,12.5 times of CK,respectively.The evaporation time was shortened by 15%,56% and 53%,respectively,compared with CK.When the added ratio was 0.1%,the average values of maximum expansion area was 1.32,21,25 times of CK,respectively.The evaporation time was shortened by 31%,75% and 73%,respectively,compared with CK.The results proved that through adding surfactants to the 10% imidacloprid droplets,the expansion area of droplets could effectively be enhanced and the evaporation time could be reduced,especially,the effect of adding 0.1% surfactant L-911 was the most obvious.It is provided the basic data for the addition of pesticide adjuvant to chemical pesticides for B.chinensis var.chinensis.