松脂二烯喷雾助剂制备及应用性能

为拓展松脂二烯应用，探究了松脂二烯喷雾助剂 (PA) 的制备与应用性能。以Vapor Gard (VG) 为对比，分别测定了两种松脂二烯喷雾助剂不同稀释倍数下的表面张力及在山核桃和红叶石楠叶片上的静态接触角，并利用扫描电镜观察了两种助剂在红叶石楠叶片上的成膜形态。采用植保无人飞机喷雾，研究了戊唑醇药液中添加两种松脂二烯喷雾助剂对雾滴粒径、沉积密度、覆盖率和沉积量的影响。结果表明:两种松脂二烯喷雾助剂PA和VG均能显著降低溶液的表面张力及其在山核桃与红叶石楠叶上的静态接触角，且添加量越大效果越好，而PA的效果优于VG。两种助剂均能在叶片上成膜并包被农药颗粒，且PA在叶片上成膜覆盖更均匀。PA在添加量 (质量分数) 为0.1%时即可达到最大覆盖率与雾滴沉积量，效果优于添加VG的各试验浓度下结果。本研究表明，松脂二烯喷雾助剂PA有助于增进喷雾雾滴沉积，提高液滴在叶面的铺展润湿性，促进成膜包裹药物颗粒，从而系统提高农药利用率。

Preparation and application performance of pinolene spray adjuvant

In order to expand the application of pinolene, preparation and application performance of the self-made pinolene spray adjuvant PA was explored. Using Vapor Gard (VG) as a comparison, the surface tension and static contact angle on leaf of Photinia × fraseri Dress. and Carya cathayensis Sarg. of two pinolene spray adjuvants with different concentrations were measured respectively. Influences of two pinolene spray adjuvants on the leaf surface morphology were detected by electron microscopy. Meanwhile, the influences of adding pinolene spray adjuvants in tebuconazole on droplet size, droplet density, coverage and deposition of unmanned aerial vehicle (UAV) spraying were also measured. The results showed that the surface tension and the static contact angles of droplets on both leaves declined significantly with adding each pinolene spray adjuvant, and the greater the amount added, the better the wetting effect. Furthermore, effect of PA was more significant. Both adjuvants can form a film on the leaves which wrapped the pesticide particles, and film-forming of PA was more evenly distributed. When the spray with 0.1% PA added, coverage and deposition were the highest, batter than each treatment of VG. The results suggested that PA contributes to the deposition of droplet, spreading and wetting of solution on the leaf surface, and prolongs effect by forming film, thereby systematically improving the utilization rate of pesticides.