宋玉莹, 曹冲, 徐博, 冉刚超, 曹立冬, 李凤敏, 赵鹏跃, 黄啟良. 农药雾滴在植物叶面的弹跳行为及调控技术研究进展[J]. 农药学学报, 2019, 21(5-6): 895-907. DOI: 10.16801/j.issn.1008-7303.2019.0110
    引用本文: 宋玉莹, 曹冲, 徐博, 冉刚超, 曹立冬, 李凤敏, 赵鹏跃, 黄啟良. 农药雾滴在植物叶面的弹跳行为及调控技术研究进展[J]. 农药学学报, 2019, 21(5-6): 895-907. DOI: 10.16801/j.issn.1008-7303.2019.0110
    SONG Yuying, CAO Chong, XU Bo, RAN Gangchao, CAO Lidong, LI Fengmin, ZHAO Pengyue, HUANG Qiliang. Research progress on bouncing behavior and control technology of pesticide droplets at plant leaf surface[J]. Chinese Journal of Pesticide Science, 2019, 21(5-6): 895-907. DOI: 10.16801/j.issn.1008-7303.2019.0110
    Citation: SONG Yuying, CAO Chong, XU Bo, RAN Gangchao, CAO Lidong, LI Fengmin, ZHAO Pengyue, HUANG Qiliang. Research progress on bouncing behavior and control technology of pesticide droplets at plant leaf surface[J]. Chinese Journal of Pesticide Science, 2019, 21(5-6): 895-907. DOI: 10.16801/j.issn.1008-7303.2019.0110

    农药雾滴在植物叶面的弹跳行为及调控技术研究进展

    Research progress on bouncing behavior and control technology of pesticide droplets at plant leaf surface

    • 摘要: 在使用农药防治农业有害生物的过程中,只有药液有效沉积于靶标表面才更有利于发挥效果。然而,农药雾化后形成的雾滴在靶标植物叶面的沉积是一个复杂的动态过程,同时受植物叶片表面微观结构与组分特性等因素的影响。具有亲水性绒毛或无定型蜡质的植物叶片通常润湿性较好,雾滴不易弹跳、滚落;而大多数植物叶片表面因覆盖表皮蜡质层,具有表皮细胞突起或特有的微纳结构,叶片难以润湿,导致农药雾滴在撞击靶标植物叶面后会产生不同程度的弹跳与碎裂行为。统计表明,平均约有20%~30%的农药雾滴由于反弹而流失,进入生态环境中,是影响农药有效利用率的关键因素。文章主要综述了雾滴在光滑固体表面、人工修饰后的粗糙界面以及农药雾滴在靶标植物叶面的弹跳行为,分析阐述了影响雾滴在固体表面弹跳行为的关键因素,同时,对已有关于如何调控雾滴在固体表面弹跳行为的研究进展进行了归纳,以期为提高农药雾滴的对靶沉积率及农药有效利用率提供新的思路和方向。

       

      Abstract: To control agricultural pests using pesticide, it need to deposited on the target interface effectively. The deposition of pesticide droplets on the target plant leaves is a complex dynamic process, which can be affected by the micro structure and component characteristics of the plant leaves. The leaves of plants with hydrophilic villi or amorphous waxy usually have good wettability, and the droplets are not easy to bounce and roll off. However, the surface of most plant leaves is covered with cuticular waxy layer, which has epidermal cell protrusion or unique micro-nano structure. Therefore, those leaves are difficult to be wetted, which will lead to pesticide droplets bouncing and fragmentation after it hits the target plant leaves. Statistic data demonstrated that, on average, 20%-30% of the pesticide droplets were lost due to rebound and left in the ecological environment, which was the key factor affecting the effective utilization rate of pesticides. In this paper, the bouncing behavior of droplets on smooth solid surface, rough interface after artificial modification and leaf surface of target plant has been reviewed. The key factors influencing the bouncing behavior of droplets on solid surface have been summarized, and the research progress on how to control the bouncing behavior of pesticide droplets on the solid surface was summarized, which will provide new ideas and directions for improving the target deposition rate and the pesticide utilization rate.

       

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