甲酯化油助剂对氯虫苯甲酰胺在甘蓝叶片上沉积的影响

Impacts of methylated oil adjuvants on chlorantraniliprole spray droplet deposition rate on cabbage leaves

室内模拟研究了5种自制甲酯化油类助剂与氯虫苯甲酰胺喷雾液桶混对其物理性状及在甘蓝叶片上沉积的影响。结果表明,供试5种助剂均可不同程度降低药液的表面张力及缩短药液干燥时间,并增加氯虫苯甲酰胺在甘蓝叶片上的最大持留量及抗雨水冲刷力,增强农药的渗透性。花生油酸甲酯助剂(MPOA)对药液喷雾性能改良作用最为明显。添加0.02%的MPOA可降低药液表面张力28%左右,甘蓝叶片最大持留量增加约4倍,而且可大大增强药剂的渗透性。

The impacts of five self-made methylated oil adjuvants （MCOA,MPOA,MLOA,MTOA and MOA） on the physical characteristics and deposition of chlorantraniliprole spray aqueous on cabbage leaves were exam-ined quantitatively under laboratory conditions.The results showed that tank-mixing of the selected adjuvants could decrease the surface tension,shorten the drying duration,increase the deposition on cabbage leaves,and in-crease the permeability of chlorantraniliprole spray aqueous to varying extend.Among the five adjuvants,the im-pact of MPOA was most prominent.Addition of 0.02% MPOA could lead to about 28% decrease of the surface tension,4 times more pesticide deposition,and significantly increase the permeability of pesticide solution.