Green insecticide and application thereof

The invention discloses a green insecticide, which is prepared from the following ingredients in parts by weight: 15 to 50 parts of modified starch, 10 to 30 parts of ammonium carbonate, 30 to 50 parts of edible oil, 0.5 to 1.5 parts of potassium hydroxide, 20 to 60 parts of surfactants and 15000 to 20000 parts of water. The invention also discloses application of the green insecticide in killing cabbage caterpillar, ostrinia nubilalis, tryporyza incertulas and stabbing moth. According to the invention, the surfactant, the edible oil, the modified starch and the potassium hydroxide are compounded and combined, and the formed insecticide can be quickly adhered to the body surfaces of pests to form a lasting blockage, so that the aim of preventing the pests from breathing until the pests die is fulfilled. 本发明公开了一种绿色杀虫剂，包括以下重量份的组分：15-50份改性淀粉、10-30份碳酸铵、30-50份食用油、0.5-1.5份氢氧化钾、20-60份表面活性剂和15000-20000份水。本发明还公开了绿色杀虫剂在杀灭菜青虫、玉米螟、三化螟、刺娥中的应用。本发明将表面活性剂、食用油、改性淀粉和氢氧化钾进行复配组合，形成的杀虫剂能快速粘附于害虫体表，形成持久堵塞物，以实现阻止害虫呼吸直到害虫死亡的目的。