生物除草菌剂Br-2对番茄列当的防治效果  

Control Efficacy of Microbial Herbicide Br-2 against Orobanche aegyptiaca

作　　者：王亚娇[1] 纪莉景[1] 栗秋生[1] 陈连芳[2] 薛根生[2] 王连生[1] 孔令晓[1] 

机构地区：[1]河北省农林科学院植物保护研究所,河北省有害生物综合防治工程技术研究中心,农业部华北北部作物有害生物综合治理重点实验室,河北保定071000 [2]新疆生产建设兵团第二师农业科学研究所,新疆库尔勒841000

出　　处：《中国蔬菜》2017年第4期65-68,共4页China Vegetables

基　　金：河北省财政项目(F13R10001);河北省财政基本科研业务费项目(494-0401-JBN-6440)

摘　　要：分枝列当是一种恶性寄生性杂草,对番茄产量影响极大。通过盆栽及田间防治试验,对生物除草菌剂Br-2防治番茄列当的施用浓度及施用时期进行了研究。结果表明:生物除草菌剂Br-2单次施用的最适施用时期和施用量为番茄移栽期10g·穴^(-1);播种期(每百株50g)和移栽期(10g·穴^(-1))同时施用生物除草菌剂Br-2比播种期或移栽期单独施用的防治效果好,其盆栽试验寄生度防效为84.13%、田间试验寄生度防效为89.19%。Orobanche aegyptiaca is a serious parasitic weed having great influence on tomato yield.This paper studies on the applying concentration and application period of microbial herbicide Br-2against Orobanche aegyptiaca by pot cultivation and field controlling trial.The results showed that the optimum applying time and application amount of microbial herbicides Br-2for one time application was during tomato transplanting time,and10g per plant.The control efficacy of Br-2was better when applying at both seedling stage(50g per hundred plants)and transplanting stage(10g per plant)than that of applying once either during sowing period or transplanting period.The control efficacy of parasitic degrees by pot cultivation and field trial were84.13%and89.19%,respectively.

关 键 词：生物除草菌剂 分枝列当 施用技术 防治效果 

分 类 号：S451.241[农业科学—植物保护]