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以西德拜尔厂产的25％粉锈灵可湿性粉剂2000～5000倍液,分别滴于载玻片上两滴,将刺梨病时上的新鲜孢了蘸于药液中,待自然干燥后,置于饱和湿度的干燥器内,在室温25℃下培养24小时。结果2000～3000倍液均能抑制分生孢了萌发,引起孢子质壁分离,稀释到5000倍液时,抑制萌发仍达95％以上。田间不同浓度防治试验小区,随机排列,分别于刺梨现蕾期、夏梢抽生初期各喷药1次,药量以叶面欲
25% of powdery mildew WP produced by West Bayer factory is 2000 to 5000 times liquid drops, respectively, drops on the glass slide two drops of fresh spores on prickly pear dipped in the liquid, to be naturally dried After that, it was placed in a desiccator of saturated humidity and incubated at room temperature at 25 ° C for 24 hours. Results 2000 ~ 3000 times liquid can inhibit the spore germination, causing spore wall separation, diluted to 5000 times the liquid, the inhibition of germination is still above 95%. Different concentrations of field control test field, were randomly arranged, respectively, in the Prickly Pear bud stage, early summer sprouting of the spraying 1, the dose to foliage