采用田间试验方法,进行苹果树喷施腐植酸铁效果试验。结果表明:喷施腐植酸铁的苹果树,叶片中叶绿素含量明显提高,缺铁黄化病树叶片复绿到基本近于正常叶片水平。喷施腐植酸铁后,百果重增加,果树产量提高16.6%,较好地改善了果品品质,提高了果实维生素C和糖分含量,降低果酸含量。 Field experiments were conducted to test the effect of spraying ferric phytic acid on apple trees. The results showed that the contents of chlorophyll in leaves of apple tree sprayed with humic acid iron fertilizer increased obviously, and the leaves of iron deficiency yellowing disease tree became green almost to normal leaf level. After application of humic acid iron, the fruit weight increased, the fruit yield increased by 16.6%, which improved the fruit quality, increased the vitamin C and sugar content, and reduced the content of fruit acid.