| 摘要: |
| 报道了褐藻胶对农药喷洒液主要物理性能及喷洒质量的影响。在喷洒液中加入0.05％～0.2％的褐藻胶,虽然有使喷洒液表面张力增大3.76％～10.76％,湿展能力降低12.4％～40.5％,雾滴直径(VMD)增大2.18％～86.75％等不利影响,但却使喷洒液的粘度提高1～6倍、悬浮率提高1～2倍(25％除草醚可湿性粉剂)、沉积率从142.4μg/g提高到198.9～228.4μg/g、雨水冲刷率从28.2％降低至4.8％～8.5％,从而明显地提高了大田防治效果。另外还就褐藻胶在我国农药喷洒中的应用前景进行了讨论、 |
| 关键词: 褐藻胶,农药,喷洒,农药助剂,农药加工 |
| DOI： |
| 分类号: |
| 基金项目:全国植保总站资助 |
|
| Effects of Algin on Physical Properties of Spray and Spraying Quality of Pesticides |
|
Wu Wenjun Wang Xinglin Ding WaiCPlant Protection Department)
|
| Abstract: |
| This paper reports the effects of algin upon the physical proPerties of
spray and spraying quality of pesticides.When the pesticide sprays were mixed with
algin at concentration of 0.05%～0.2%,the surface tension increased (3。76%～
10.6%),the wetting and spreading area decreased (12.4%～40.6%), the
diameter of spray droplet (VMD) in creased (2.15%～86.75%),but the viscosity was l～6 folds,the suspensibility l～2 folds (for 25% of nitrofen wp)
compared with the normal spray,the deposite rate was raised from 42.4μg/g
to 198.9～225.4μg/g,the rain water washing rate decreased from 28.2% to
4.8～8.5%.As a result,the effectiveness of field control was improved remarkably. In addition,the prospects for application of algin to pesticide spraying
in China was discussed. |
| Key words: pesticide, algin, spray, adjuvant, formulation |
