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樟树和栀子花叶片失绿黄化症,主要起因于土壤条件,即土壤中pH值高,并呈HCO_3~-离子反应,从而影响了土壤中铁的活化。另一方面是大量吸收磷素,使植株内铁磷比失调,影响铁的运转,降低过氧化氢酶和过氧化物酶的活性。治理措施可及时喷尿素铁、黄腐酸铁、柠檬酸铁等,均有良好的复绿效果。根治措施可因地制宜地施用酸性客土及有机肥等,改良其立地条件。
Camphor tree and gardenia leaf chlorosis, mainly due to soil conditions, that is, high pH in the soil, and was HCO3 - - ion reaction, thus affecting the activation of iron in the soil. On the other hand is a large number of absorption of phosphorus, so that plant iron and phosphorus imbalance, affecting the operation of iron, reducing catalase and peroxidase activity. Control measures can be timely spray urea iron, fulvic acid, iron citrate, etc., have a good complex green effect. Radical measures can be based on the local application of acid soil and organic fertilizer, to improve the site conditions.