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一、强力树干注射施铁法果树缺铁最为常见 ,缺铁症状表现为顶端或枝梢叶片失绿发黄 ,而叶脉却保持绿色 ,同时 ,叶片边常出现棕褐色斑块 ,严重时发生枯梢现象。对缺铁果树采用叶面喷洒铁肥 ,效果不够理想 ,而采用强力树干注射法施铁肥效果最佳。所谓强力树干注射法 ,就是在果树?
First, the strong trunk injection of iron method is the most common iron deficiency in fruit trees, iron deficiency symptoms tops or shoots leaves lost its green yellow, while leaves remain green, while leaf edge often appear brown patches, severe dry shoot phenomenon . Iron-deficient fruit trees foliar spraying iron fertilizer, the effect is not ideal, and the use of powerful tree stem injection of iron fertilizer best. The so-called powerful trunk injection method, is the fruit tree?