石硫合剂,可用于防治白粉病、锈病、黑星病以及红蜘蛛、介壳虫等多种病虫害,但若使用不当,不仅防效差,还会产生药害。石硫合剂果园使用有“五不”。 一、不要配制后久置 石硫合剂最好是随配随用,一次用完,配制后久置会使药效降低。 二、不要盲目使用 有的果树对硫磺敏感,盲目使用易产生药害。桃、李、梅、杏等果树生育期不宜使用石硫合剂,否则引起落果。 Stone sulfur mixture, can be used to control powdery mildew, rust, scab and spider mites, scale insects and other pests and diseases, but if used improperly, not only poor control, but also produce injury. Stone sulfur mixture orchard use “five not.” First, do not prepare long-term placement after the stone sulfur mixture is best with the use of disposable, used up after a long period of preparation will reduce the efficacy. Second, do not blindly use some of the fruit trees are sensitive to sulfur, blind use of easy to produce injury. Peach, plum, plum, apricot and other fruit trees should not be used during the growth of lime sulfur mixture, or cause fruit drop.