磷化铝原粉为白色或灰绿色方形结晶粉末,能与空气中的水分反应产生具有杀虫效果的磷化氢。 1 防治对象及药效磷化氢对小麦、玉米、高粱、豆类等种子中的米象、谷象、谷蛾、谷螟、杂拟谷盗、赤拟谷盗、谷蠢、锯谷盗、长角谷盗、麦蛾等成虫、幼虫、卵都能杀死,对于干果蛾、粉螨、室螨以及仓鼠等也有杀效。药效与环境条件(温度、水分、仓房密闭性能等)以及虫种、虫态、生理状态等有密切关系。一般说,温度高,仓房密闭性能好,作用时间长,对同一种害虫或虫态的药效就高;反之,药效就低。即使同一虫种,其不同虫态对磷化氢的敏感性也仍有很大差异。一般地讲,成虫和幼虫对磷化氢较为敏感,卵和蛹不太敏感。熏蒸时虫卵和蛹的存在,往往是造成熏蒸后仍有活虫的重要原因之一。磷化氢致死害虫量的一个重要因素,是磷化氢的实际吸收量。它与温度、耗氧量有密切关系,即温 The original powder of aluminum phosphide is white or gray-green square crystal powder, which can react with the moisture in the air to produce phosphine with insecticidal effect. 1 prevention and treatment of the object and efficacy of phosphine on wheat, corn, sorghum, beans and other seeds of rice, Gu Xiang, moth, Chilo suppressalis, miscellaneous grains Valley Pi, , Long-horned Valley Pi, moth and other adult worms, larvae, eggs can kill, for moths, acaroid mites, mites and hamsters also kill effect. Efficacy and environmental conditions (temperature, moisture, warehouse closed performance, etc.) and insects, insects, physiological status are closely related. In general, the high temperature, the warehouse closed a good performance, the role of a long time, the same kind of pest or insect state efficacy is high; the other hand, the efficacy is low. Even if the same species of insects, their different insect states phosphine sensitivity is still very different. In general, adults and larvae are more sensitive to phosphine, eggs and pupae are less sensitive. Fumigation, the presence of eggs and pupae are often one of the major causes of live insects after fumigation. An important factor in the amount of phosphine to kill pests is the actual amount of phosphine absorbed. It is closely related with temperature and oxygen consumption, namely temperature