摘要
为研究雾滴尺寸对药液沉积和麦蚜防效的影响,该试验通过选择不同喷头喷施吡虫啉来防治麦蚜。所选德国Lechler生产的3种喷头(LU120-02、AD120-02和IDK120-02)的VMD(volume median diameter,VMD)相差约100μm。试验结果表明:IDK喷头在小麦冠层的平均沉积量显著小于LU和AD,而LU和AD这2个喷头之间没有显著差异性,3种喷头在冠层下部的药液沉积量>中部>上部;LU喷头喷施的药液平均覆盖率显著好于AD和IDK,覆盖率随着雾滴粒径的增加而递减;LU喷头喷施的药液的地面损失最大,且显著高于其他两种喷头;3种喷头都体现了对麦蚜的良好防效;从沉积量、沉积均匀性及地面损失量来衡量,AD喷头优于其他2种喷头。
To study the effect of droplet sizes on deposition and pesticide efficiency,this trial was performed to spray imidacloprid against aphids by choosing different nozzle types.The VMD of the three chosen nozzles from Lechler,i.e.LU120-02,AD120-02 and IDK120-02,were about 100μm difference.The results demonstrated that：the deposits of IDK nozzle were higher significantly than that of LU and AD,whose deposits had no significant difference.The deposits on different zones of wheat canopy followed：downmiddleupper;LU nozzle achieved significantly better coverage rate than AD and IDK,the increased droplet size meant the lower coverage rate;LU nozzle had the largest ground loss and it was higher significantly than the other two nozzles;the three nozzles all gave excellent field efficiency against wheat aphids;AD nozzle was considered as the optimum candidate in terms of deposits,coverage rate and ground loss.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2012年第7期46-50,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家自然科学基金资助项目(30971940)
国际科技合作专项(2010DFA34570)
高等学校博士学科点专项科研基金资助项目(20090008110015)
关键词
喷头
沉积量
害虫防治
蚜虫
雾滴粒径
覆盖率
防效
nozzles
deposits
pest control
aphid
droplet size
coverage rate
field efficiency
