雾滴粒径对川楝素在3种作物上沉积量的影响  

Effects of Droplet Size on Deposition of Toosendanin on Three Crops

作　　者：李海 马志卿 张兴 周一万 LI Hai;MA Zhiqing;ZHANG Xing;ZHOU Yiwan(Research R&Development Center of Biorational Pesticides,Northwest A&F University,Yangling,Shaanxi 712100,China;Shannxi Center for Engineering and Technology Research of Biopesticides,Yangling,Shaanxi 712100,China)

机构地区：[1]西北农林科技大学无公害农药研究服务中心,陕西杨凌712100 [2]陕西省生物农药工程技术研究中心,陕西杨凌712100

出　　处：《热带生物学报》2019年第3期235-239,共5页Journal of Tropical Biology

基　　金：国家自然科学基金(31471802)

摘　　要：为探明川楝素(Toosendanin)的沉积量与所用喷头粒径的关系,笔者以小白菜(Brassica campestris L.ssp.chinensis Makino)、黄瓜(Cucumis sativus L.)和甘蓝(Brassica oleracea L.)为植物材料,2%川楝素乳油、2%川楝素微乳剂、2%可湿性粉剂为供试药剂,选用德国Lechler公司生产的ST110-03、ST110-04、ST110-05及ST110-06 4种扇形雾喷头,研究了3种制剂形态的川楝素在3种作物上的沉积量。结果表明,喷雾雾滴VMD在151.7~215.3μm范围内,在叶片临界表面张力较大的黄瓜和小白菜上,川楝素乳油和可湿性粉剂稀释液在植物叶片上的沉积量有随着雾滴直径增加而增加的趋势,但处理间的差异不明显。而川楝素微乳剂稀释液在小白菜和黄瓜叶面上的沉积量随雾滴直径的增加而逐渐减小。在叶片临界表面张力较小的甘蓝植株上,3种川楝素制剂稀释液的沉积量均随着喷雾雾滴直径的增加而减小。因此,建议使用ST110-03(151.7μm)型喷头,以提高药剂沉积量。Pakchoi, cucumber and cabbage were sprayed with 2% toosendanin EC, MEC or WP by using four different fan-shaped spray nozzles from a German company Lechler, ST110-03, ST110-04, ST110-05 and ST110-06, to analyze the relation between toosendanin depositon on three crops and nozzle size. The results show that the deposition of toosendanin EC and WP sprayed with droplet size between 151.7~215.3 on cucumber and cabbage leaves which had larger critical surface tension tended to increase in droplets size, but had no obvious difference between the treatments. Meanwhile the deposition of toosendanin ME on pakchoi and cucumber leaves gradually decreased with the increase of the nozzle sizes. The toosendanin deposition of the 3 preparations on the cabbage leaves decreased with increase in size of nozzles. It is suggested that nozzle ST110.03 (151.7) be used to increase the deposition of toosendanin on the leaves of the tree crops.

关 键 词：川楝素 沉积量 雾滴粒径 

分 类 号：S482.1[农业科学—农药学]