石硫合剂主要化学成份是多硫化钙,它是用石灰、硫黄加水而熬制成的棕色液体,有臭鸡蛋味,属强碱性,性质不稳定,对皮肤有腐蚀作用。石硫合剂具有很高的杀菌、杀虫作用,特别是对螨类、介壳虫类效果更为明显。当药液喷到植物体上,经与空气接触,多硫化钙受到空气中氧气和二氧化碳的作用,分解成硫黄微粒和碳酸钙,硫黄微粒在一定温度下挥发成气体,侵入到病菌和虫体内,经化学反应变成比硫 The main chemical component of lime sulfur mixture is calcium polysulfate. It is a brown liquid made of lime and sulfur with water and boiled egg. It is alkalescent, unstable in nature and corrosive to the skin. Stone sulfur mixture has a high bactericidal, insecticidal effect, especially for mites, scale insects more obvious effect. When the liquid is sprayed onto the plants, the calcium polysulfide is exposed to the oxygen and carbon dioxide in the air and decomposed into sulfur particles and calcium carbonate. The sulfur particles volatilize into the gas at a certain temperature and invade into the germs and parasites , After the chemical reaction becomes sulfur