云南橡胶树及热带果树常见病原寄生植物的初步调查

A PRELIMINARY INVESTIGATION ON COMMON PATHOGENIC PHYTOFARASITES OF RUBBER TREES AND TROPICAL FRUIT TREES IN YUNNAN

云南橡胶树和杧果、柚子、柑桔等热带果树常见病原寄生植物有三种:1 五蕊寄生Dendrophthoe pentandra(L.)Miq.;2 卵叶梨果寄生Scurrula chingii(Cheng)H.S.Kiu.;3 瘤果槲寄生Viscum ovalifolium DC.。根据在西双版纳的调查,橡胶树平均被寄生率为4.99％,严重林段达75％,杧果树平均被寄生率52.7％,柚子树平均被寄生率74.2％,柑桔类树平均被寄生率83.2％。对柚子树的寄生植物采取切除措施,可收到比较好的效果,对橡胶树的病原寄生植物切除处理效果也较好。

There are three common pathogenic phytoparasites of rubber trees and tropical fruit trees such as mango, pomelo, citrus, etc. in Yunnan, namely: Dendrophthoe pentandra (L.) Miq.(1856),Scurrula chingii (Cheng) H. S.Kiu, and Viscum ovalifolium DC.(1830) Danser (1941). The investigation in Xishuangbanna showed that, on the average, 5.0% of rubber trees and up to 74.2% in serious rubber stands. 52.7% of mangoes, 74.2% of pomelos, and 83.2% of citruses are parasitized. It the removal of pathogenic phytoparasites of pomelos and rubber trees is carried out, better results can be acchieved.