陕西猕猴桃黄化病发生规律研究

Studies on occurrence regulation of kiwifruit chlorosis

对陕西猕猴桃黄化病的分布和危害进行了调查,研究了猕猴桃黄化病的发生原因和特点。结果表明,猕猴桃黄化病的发生与土壤中铁的含量和土壤酸碱性有关,在铁含量相对较低、土质碱性的沙土和红土娄土中,黄化病的发生严重;在不同品种间,黄化病的发生没有明显的差异;随着树龄的增大,黄化病也随之加重;施有机肥有助于黄化症状的缓解和消除。

The contribution,damage and occurrence character of kiwifruit chlorosis were investigated.The results show that there are close relationships between chlorosis occurrence and content of Fe,pH in soil.The content of Fe is lower,the occurrence of kiwifruit chlorosis is more serious in alkalinity soil.There are not distinct differences among different cultivars.Occurrence of kiwifruit chlorosis becomes more serious with growth of tree.Application of manure is helpful to control kiwifruit etiolation.