树叶农药的开发利用文／汪桃萍汪德巍用有杀虫作用的树叶制成农药，防治病虫害，具有成本低、无污染、操作简便等特点。１．侧柏叶：含松柏苦味素、侧柏甙及挥发油、单宁酸等。将其叶捣碎，加等量的水揉搓，榨出原液，再加２倍水喷洒，可防治稻螟和棉蚜。侧柏叶１０倍的水... Development and Utilization of Leaf Pesticides / Wang Tao-ping Wang De-wei Insecticides are used to make pesticides and control pests and diseases. They are characterized by low cost, no pollution and easy operation. 1. Oriental Arborvitae Leaf: Pine and cypress bitter, bearded glycosides and volatile oil, tannic acid and so on. The mashed leaves, plus the same amount of water Rub, squeeze out the liquid, plus 2 times the spray water, can control rice stem borer and cotton aphid. Oriental Arborvitae 10 times the water ...