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胶树大面积化学药剂空中人工脱叶技术首先在马来西亚发展起来,它是作为在南美叶疫病万一从南美热带地区传入马来西亚时的危急关头的应急措施。为对付这种危急情况,曾经推荐使用内吸性脱叶剂2、4、5滴正丁酯。每公顷用35升5％浓度的柴油剂进行空中喷雾,能诱使叶片迅速脱落,继之嫩梢严重回枯。在后来的为诱使早而均匀一致的越冬,作为感病品系避免每年发生的第二次落叶病的研究工作中,用接触除莠剂或干燥剂作试验,发现两种有机砷剂,即二甲胂酸及其钠盐和甲肿
Gum Tree Large-area chemicals The aerial artificial defoliation technology was first developed in Malaysia as a contingency measure at a critical juncture in the event of a South American, leaf blight, when it came to Malaysia from the tropical South American region. In order to deal with this critical situation, it has been recommended to use 2, 4, 5 n-butyl lactate defoliants. Aerosol spray with 35 liters of 5% concentration diesel fuel per hectare can induce the leaves to fall off rapidly, followed by the serious shootback of tender shoots. In later studies to induce early and even winter overwintering as a susceptible strain to avoid annual second leaf decay, exposure to herbicides or desiccant was used to test two organic arsenic agents, namely Cacodylic acid and its sodium salt and armor