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刺梨白粉病对刺梨为害严重,其发病高峰期在盛花期和夏梢抽生盛期。防治的关键时期是现蕾期和夏梢抽生初期。在药剂筛选的基础上,87年我们用西德拜尔厂产的25%粉锈灵可湿性粉剂对该病进行了较全面的防治试验。(一)药剂对孢子萌发的影响:用药液2000、3000、4000、5000倍及清水分别处理该病菌分生孢子。因
Prickly pear powdery mildew is serious damage to Rosa roxburghii, its peak incidence in full flowering and summer shoot pumping Sheng period. The key period of prevention and treatment is the budding period and the early summer sprouting. Based on the drug screening, we conducted a comprehensive prevention and control test for this disease with 87% WPA WP produced by our factory in 1987. (A) the impact of agents on the spore germination: 2000,3000,4000,5000 times the liquid and water treatment of the bacteria conidia. because