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在梨树盛花期喷施250－300ppm多效吐能明显促进幼果脱等，改善果形外观和品质．并可控制新消生长，促进花芽分化，而对树势无明显削弱作用，利于优质稳产。
Spraying 250-300ppm multi-effect spit in the flowering of pear tree significantly promote the young fruit off, improve fruit appearance and quality. And can control the new growth, and promote flower bud differentiation, but no significant effect on the tree weakened, conducive to high quality and stable.