桔园施用有机肥对主要害虫发生的影响

Effect of organic fertilization on the occurrence of important citrus pests

为了通过合理施肥控制柑桔害虫的发生、从而减少喷施防虫农药的次数,本研究在桔园比较了单施有机肥、单施化肥的柑桔树上柑桔木虱Diaphorina citri Kuwayama、柑桔全爪螨Panonychus citri McGregor、柑桔潜叶蛾Phyllocnistis citrella Stainton等主要害虫的发生数量。结果表明,单施有机肥柑桔木虱、柑桔全爪螨发生数量显著低于常规施用化肥的施肥方法,柑桔潜叶蛾的为害没有显著变化,柑桔长势、果实可溶性固形物也没有显著改变。说明施用有机肥可以减少柑桔木虱和柑桔全爪螨的发生,而对柑桔树的长势、果品质量没有不利影响。

After one application of organic and chemical mixture fertilizer in the whole orchard during the dormancy,organic fertilizer and chemical fertilizer were applying alone in part of a commercial citrus orchard during 1 year,and the populations of important citrus pests occurred on the trees of the 2 treatments were monitored and compared.The result showed that the populations of Asian citrus psyllid Diaphorina citri Kuwayama and citrus red mite Panonychus citri McGregor of organic fertilizer treatment were significantly lower than that of chemical fertilizer.There was no significant difference of damage by citrus leafminer Phyllocnistis citrella Stainton,tree dimension and fruit soluble solid between the 2 treatments.The results indicate that applying organic fertilizers is able to reduce the quantity of Asian citrus psyllid and citrus red mite in citrus orchard.