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5种药剂对马铃薯腐烂茎线虫的田间防治效果
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引用本文:王家哲,付 博,任 平,李英梅,杨 辉,叶彩萍,张 锋.5种药剂对马铃薯腐烂茎线虫的田间防治效果[J].西北农业学报,2020,30(6):907~911
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作者单位
王家哲,付 博,任 平,李英梅,杨 辉,叶彩萍,张 锋 (1. 陕西省生物农业研究所,陕西省植物线虫学重点实验室西安 7100432. 榆林市农业技术服务中心陕西榆林 719000) 
基金项目:陕西省科学院科技计划(2019K-05);西安市科技局项目(20193064YF052NS052);榆林市科技计划(2019-13);陕西省科技厅重点研发科技项目(2020NY-072)。
中文摘要:为筛选适宜在田间应用并对马铃薯腐烂茎线虫具有高效、低毒、低残留防治效果的药剂,选用10%噻唑膦GR、98%棉隆GR、1.8%阿维菌素WP、5%辛硫磷GR、5%丁硫克百威GR,在前茬发病均匀的马铃薯地块进行沟施或土壤熏蒸,采用“Z”字型法取样,统计发病率、病情指数、防治效果和保产率。结果表明,10%噻唑膦GR、98%棉隆GR、5%丁硫克百威GR施药后45 d和90 d的虫口减退率分别为88.8%和 91.4%、 90.1%和87.6%、61.1%和57.0%,而1.8%阿维菌素WP和5%辛硫磷GR杀灭线虫作用效果较差。10%噻唑膦GR和98%棉隆GR对茎线虫的防治效果分别为87.4%和86.3%,其次为5%丁硫克百威GR、5%辛硫磷GR和1.8%阿维菌素WP,防治效果分别为66.8%、61%和53.0%。10%噻唑磷WP和98%棉隆WP对马铃薯的保产效果最好,保产率分别达78.3%和77.2%,其次为5%辛硫磷WP、5%丁硫克百威WP和1.8%阿维菌素WP,保产率分别为51.1%、56.1%和38.3%。因此,10%噻唑膦WP和98%棉隆GR对茎线虫减退率、防治效果和田间保产率均优于其他药剂,其中10%噻唑膦WP具有更经济、更方便、更稳定的田间防治效果,应用潜力较大。
中文关键词:马铃薯腐烂茎线虫  杀虫剂  田间防治效果
 
Control Effects of Five Insecticides on Ditylenchus destructorin Potato Field
Abstract:In order to screen out high-efficiency, low-toxic, and low-residue insecticides for controlling Ditylenchus destructor in potato field. Five nematicides including fosthiazate 10% GR, dazomet 98% GR, avermectins 1.8% WP, phoxim 5% GR and carbosulfan 5% GR were used in furrow application at potato plots, which were infected with Ditylenchus destructor.“Z” font method was used for sampling, the incidence rate, disease index, control effect and yield increase rate were calculated. The results showed that the reduction of nematode population at the 45th and 90th day after application of fosthiazate 10% GR, dazomet 98% GR and carbosulfan 5% GR were 88.8% and 91.4%,90.1% and 87.6%,61.1% and 57.0%, while avermectins 1.8% WP and phoxim 5% GR were less effectiveto kill nematodes. Control effects of fosthiazate 10% GR and dazomet 98% GR on Ditylenchus destructor were 87.4% and 86.3% respectively.Carbosulfan 5% GR, phoxim 5% GR and avermectins 1.8% WP had control effects of 66.8%, 61% and 53.0%, respectively. Fosthiazate 10% GR and dazomet 98% GR had the highest increase in potato yield,the potato yield increased by 78.3% and 77.2%, phoxim 5% GR, carbosulfan 5% GR and avermectins 1.8% WP could increase potato yield by 51.1%,56.1% and 38.3%, respectively. In conclusion, fosthiazate 10% GR and dazomet 98% GR are superior to other agents in the reduction of nematode population, control effect and yield increase in potato fields,especially,fosthiazate 10% GR is more economical,more convenient and morestable in field control.
keywords:Ditylenchus destructor  Insecticides  Control effects  Potato field
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