论文部分内容阅读
红蜘蛛常在植株的幼嫩部位吸吮汁液,受害植株生长衰弱,茎部脱落或球体呈现火烧状的黄褐色斑痕。即使在喷药杀死虫体后,斑痕也不能消除。使植株失去观赏价值。一般在高温、干燥、通风不良的情况下,发生与蔓延很快。防治措施:1.预防为主,改善栽培条件。夏季可
Spider mites often suck juice in the tender parts of the plants, the impaired plants grow weak, stems fall off or the balls show flaming brownish-brown scars. Even after spraying to kill parasites, the marks can not be eliminated. Lost the ornamental value of plants. Generally in high temperature, dry, poor ventilation, the occurrence and spread quickly. Control measures: 1. Prevention, improve the cultivation conditions. Summer can be