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本文测定了成都市龙泉山缺铁失绿症果树埋植铁剂“颗颗灵”三年后叶片的叶绿素含量、厚度、100叶重、100叶体积、100叶面积等叶片生理和生长指标的变化。结果表明，树干深层埋植铁剂“颗颗灵”对供试桃、李、樱桃和柑桔树具有持续的后效．
In this paper, the leaf chlorophyll content, thickness, 100 leaf weight, 100 leaf volume, 100 leaf area and other leaf physiological and growth indexes Variety. The results showed that the deep planting of the trunk iron particles “gingival” on the peach, plum, cherry and citrus trees have a sustained after-effects.