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经过两年5个试验点的观察认为:用91.79%PR-04粉剂20ppm药液,于采前21天喷布盛果期元帅苹果植株,可以降低采前落果率,其效果优于用20ppmNAA处理。喷布PR-04对果实外观、品质无不良影响。
After two years of testing at 5 pilot sites, the results showed that spraying 20% liquid of 91.79% PR-04 powder on mandarin apples at 21 days before harvest reduced the rate of fruit drop before harvest, which was better than that of 20 ppm NAA . PR-04 spray fruit appearance, quality no adverse effects.