橡胶树刈面条溃疡病的致病菌——棕榈疫霉菌,广泛分布于热带、亚热带地区,侵染橡胶、可可等138种植物,是海南垦区橡胶树主要病害之一。多年来用溃疡净和赛力散等汞制剂防治,效果很好,但对人畜毒性大。1976年开始,进行多效霉素防治试验,四年来,累计试验胶树40多万株,取得 Rubber tree kimchi canker disease pathogens - Phytophthora capsici, widely distributed in the tropical and subtropical regions, infecting rubber, cocoa and other 138 kinds of plants, is one of the major diseases of rubber trees in Hainan Reclamation. Over the years with the ulcer net and Saracenic and other mercury preparations prevention and treatment, the effect is good, but toxic to humans and animals. Since 1976, we have carried out experiments on the control of polymyxin. Over the past four years, we have tested more than 400,000 strains of gum trees and obtained