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一、引起肥害的原因1.深翻或深开沟施用的有机肥未充分腐熟,肥块过大、过于集中,造成烧灼树根。2.过量集中施用尿素、硝酸钾、硫酸铵、氯化钾、碳酸氢铵等速效化肥,使树根烧灼受害。3.叶面施肥的肥液浓度过高,引起叶片焦灼、干枯。如硼砂等生理碱性肥料以及硫酸锌、硫酸亚铁、氯化钙、硝酸钙等无机盐类,易因浓度过高烧叶。
First, the cause of fertilizer fat 1. Deep plowing or deep ditch the use of organic fertilizer is not fully decomposed, fat blocks are too large, too concentrated, resulting in burning roots. 2. excessive concentration of urea, potassium nitrate, ammonium sulfate, potassium chloride, ammonium bicarbonate and other quick-acting fertilizers, so that the root burning damage. 3. foliar fertilizer fertilizer concentration is too high, causing leaves anxious, dry. Such as borax and other physiological alkaline fertilizers and zinc sulfate, ferrous sulfate, calcium chloride, calcium nitrate and other inorganic salts, easily due to high concentration of burning leaves.