石硫合剂是一种无机杀菌、杀虫剂,长期以来它被广泛地应用于防治果树多种病害和杀螨与介壳虫上,它可与有机磷农药交替使用,以减少螨类对有机磷产生的抗药性。同时石硫合剂的原料,价廉易购,因而倍受果农欢迎。石硫合剂的质量指标是原液中多硫化钙的含量多少。它与原液的比重成正相关,于是人们常用波美比重计来测量石硫合剂的质量,石硫合剂波美度数越高,质量就越好。但从经济成本看,还应考虑熬制原液数量的多少,工作效率、烧柴多少。因此最好的标准是用熬制石硫合剂原液波美度数乘以澄清的原液重量之积与原料单位价格之比来 Stone sulfur mixture is an inorganic germicidal and insecticide, which has long been widely used in the control of various diseases of fruit trees and acarids and scale insects. It can be used interchangeably with organophosphorus pesticides to reduce the effects of mites on organic phosphorus Produce resistance. At the same time lime sulfur mixture of raw materials, cheap easy to buy, and thus much welcomed fruit farmers. The quality index of lime sulfur mixture is the amount of calcium polysulfide in the stock solution. It has a positive correlation with the proportion of the stock solution, so people often use the Baume measure to measure the quality of lime sulfur mixture, the higher the Baume degree of the stone sulfur mixture, the better the quality. However, from the perspective of economic costs, we should also consider how much boil the amount of liquid, work efficiency, how much firewood. The best standard is therefore the ratio of the Baume degree of the boehmite-sulphate stock solution times the product of the weight of the clarified concentrate to the unit price of the raw material