触破式微胶囊加工工艺及初步应用

以凝聚相法和界面聚合法为基础，选用明胶—阿拉伯树胶和聚胺酯壁作为囊壁材料加工了不同厚度的氰戊菊脂—倍硫磷微胶囊剂，并对越冬代马尾松毛虫和松墨天牛进行初步的触破防治试验。结果表明：１７．５％的聚胺脂微胶囊剂在自然条件下一个月无自破现象。在相同有效浓度下，囊壁相对比重６％的明胶－阿拉伯树胶微胶囊剂和１５％的聚胺酯微胶囊剂对越冬代松毛虫的校正死亡率达９５％以上，初步试验表明这类材料制成的微胶囊剂用于防治林业害虫具有良好的防治效果，特别是对防治天牛类害虫具有很好的应用前途。

A Study on the Processing Technique and Initial Use of Contacted Breaking Release Microcapsules of Pesticides

This paper mainly deals with the process of the contacted breaking release microcapsules of pesticide, by means of coacervation and interfacial poly merization five kinds of microcapsules prepared with fenvalerated_fenthion (FF) and wall polymers polyaminoresin (P), gelation_gum acacia (G1) were used to control fests on Monochamus alternatus Hope and Dendrolimus punctatus (Walker) overwintering larva. The results show that 17.5% polyaminoresin microcapsules can maintain the original shape without self_breaking in the environment in one month unless being contacted by insects. The gelation_gum acacia and polyaminoresin microcapsules (6% and 15% wall meterials respectively) can keep mortality to D.panctatus (Walker) by 90% in 25 days. This kinds of microcapsules are promising to control forest pests especially longhorn_beetles.