粉锈宁是一种内吸性强的新型杀菌剂,具有防效高,用量低、药效快、残效期长、内吸传导性能好、使用安全等特点,防治蔬菜、果树白粉病有特效。1983年我们在蔬菜、果树等作物上试验用15%粉锈宁2,500倍液防治大棚黄瓜和露地西葫芦白粉病,效果达94%以上,持效期20—25天。用近似的浓度防治苹果白粉病,效果达97%以上,持效期30—40天。目前市场上出售的剂型有25%粉锈宁 Triadimefon is a new systemic fungicide with strong anti-bacterial effect, low dosage, fast efficacy, long residual period, good internal conductivity, safe use and so on. It is effective in controlling vegetables and fruit powdery mildew. In 1983, we experimented on vegetables, fruit trees and other crops with 2,500 times of 15% triadimefon to control greenhouse cucumber and zucchini powdery mildew. The effect was over 94%, and the holding period was 20-25 days. With similar concentrations of prevention and control of apple powdery mildew, the effect of more than 97%, duration of 30-40 days. The dosage form currently on the market is 25% triadimefon