【摘要】 在酚硫杀的合成中，加入相转移催化剂（ＴＢＡＢ）可使反应收率由３８％提高到７６％，降低了成本。其制剂Ｓ－ＥＡ落果防止剂在苹果果树上应用，对防止采前落果有显著效果，且对果树生长及果品贮藏、果品品质无不良影响，优于目前生产上使用的萘乙酸等。更多还原

【Abstract】 Yield is raised from 38% to 76% and the cost is decreased due to phase transfer catalyst (TBAB) added in the synthesis of phenothiol A preparation of this type fruitdrop preventive named S-EA has revealed remarkable efficiency in preventing premature fruitdrop of apple tree without bad influence on fruit tree growing、 fruit storing and fruit quality It is much better than the market products like NAA, etc更多还原