名词解释题植物缺素症 hunger sign in plant, nutrient deficiency symptom in plant
名词解释题
植物缺素症 hunger sign in plant, nutrient deficiency symptom in plant
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单选题In order to culture and propagate enough bacteria to treat the body and galley wastes()Aa new bacteria colony should be put into the plant in advanceBthe disinfection chemicals should be always usedCthe air blower should be started and keep running in advanceDthe nutrient for bacteria should put into plant in advance
单选题园林植物营养失调会引起缺素症,如植物缺(),会出现矮化、分枝少、失绿变色及组织坏死等现象。A氮B磷C钾D锌