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用醋将２．４—Ｄ钠盐调至酸性，在番茄不同花期喷施，证明对防落无效果，但可减少畸形果数目，提高单果重和总产。
2.4-D sodium vinegar with vinegar adjusted to acidic spray in different flowering stages of tomato, proved no effect on the anti-drop, but can reduce the number of deformed fruit, improve fruit weight and total output.