柑桔树干由寄生疫霉菌(Phytophthoraparasttica Dast.)引起的疫病其防治主要在于预防,常用的方法是:于病害发生之初,清除被侵染的树皮,然后于该处施用杀菌剂。然而要大规模采用此法则费时费事也不经济。采用两种新的有希望的内吸杀菌剂来防治脚腐病和处理树干则不费劳力。一种为甲霜安(metalaxyl),对该药已进行了 Citrus Trunks Blight caused by Phytophthora parasitica Dast. The prevention and treatment of diseases is mainly prevention. Common methods are as follows: Remove infested bark at the beginning of the disease, and then apply bactericide. However, it is not economical or time consuming to adopt this law on a large scale. Using two new promising systemic fungicides to combat foot rot and tree trunks is effortless. One is metalaxyl, which has been prescribed for this medicine