套袋苹果黑点病发生规律及其对几种化学药剂的敏感性  

Studies on the occurrence and sensitivity to the chemicals of black-dot disease of bagged apple

作　　者：郭云忠[1] 高保卫[1] 孙广宇[1] 王安 张沛力 穆敏 

机构地区：[1]西北农林科技大学植保资源与病虫害治理教育部重点实验室,陕西杨凌712100 [2]西安市土壤肥料工作站,陕西西安710000 [3]陕西秦丰杂交玉米种子有限公司,陕西西安710016 [4]武功县植保植检站,陕西武功712000

出　　处：《西北农林科技大学学报（自然科学版）》2005年第B08期101-104,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：科技部攻关项目(2002BA516A10);杨凌农业科技开发基金项目(2000J~25)

摘　　要：经过5年的研究,初步明确了陕西苹果产区套袋苹果黑点病的病原菌及病害的发生规律。该病害是由粉红聚端孢TrictothecumroseumLink和点枝顶孢AcremoniumstictumLink共同引起的真菌病害;病原菌主要以菌丝体在枯枝和病果上越冬,其分生孢子主要靠风雨传播,从伤口入侵或直接从皮孔入侵;从苹果套袋后到9月份,病菌均可侵染果实;高温高湿是该病发生流行的条件;不同结果部位、不同质地果袋发病轻重不同;套袋苹果黑点病菌对杀菌剂多菌灵、甲基托布津敏感。It has been made clear that the occurrence regularity of black-dot disease of bagged apple in Shaanxi according to the experiments conducted from 2000-2003. The disease was caused by Trictothecum roseurn Link and Acrernonium stictum Link. The overwintered mycelium in the dead branches and diseased apples was the first infected source. The conidium of pathogen spreaded mainly by wind or rain,and penetrate down wound or the dot of fruit. The pathogen could infect fruit from the time apple being bagged to September. Higher temperature and humidity were favourable conditions to the emergence and prevalence of the disease. The different parts of apple trees and the different texture of the bag had different disease occurrence level. The pathogen was more susceptible to the fungicides-Carbendazim and Thiophanatemethyl.

关 键 词：套袋苹果 黑点病 发生规律 防治药剂 

分 类 号：S436.611.19[农业科学—农业昆虫与害虫防治]