富氮低氧条件下200mL/m^3磷化氢熏蒸杀虫效果分析研究  

STUDY ON FUMIGATION EFFECT OF 200mL/m^3 PHOSPHINE UDER LOW OXYGEN RICH NITROGEN

作　　者：朱延光 严晓平 何洋 张娟 杨玉雪 周庆 Zhu Yanguang;Yan Xiaoping;He Yang;Zhang Juan;Yang Yuxue;Zhou Qing(Sinograin Chengdu Storage Research Institute Co. Ltd,610091)

机构地区：[1]中储粮成都储藏研究院有限公司,610091

出　　处：《粮食储藏》2018年第5期1-5,共5页Grain Storage

基　　金：2016年国家重点研发计划"粮食收储保质降耗关键技术研究与装备开发"项目(2016YFD0401004)

摘　　要：主要研究了200mL/m^3磷化氢在不同低氧条件下的熏蒸杀虫效果、害虫的死亡规律及不同虫种对磷化氢的耐药性比较等。结果表明,200mL/m^3磷化氢气体在含氧量为2%、3%、4%和5%的低氧条件下的熏蒸杀虫效果明显优于200mL/m^3磷化氢气体在常量氧条件下的杀虫效果,平均校正死亡率增加80%以上;氧气含量大于3%时,供试虫的校正死亡率随着氧气含量的下降而增加,氧含量下降到3%时校正死亡率达到最大,继续降低氧气含量,供试虫的校正死亡率反而降低;在时间上,低氧组80%以上的供试虫在2 d内被杀死,3 d内基本全部死亡;低氧条件下,200mL/m^3磷化氢对米象的耐受性强于谷蠹。This paper mainly studied the effect of 200 mL/m^3 phosphine fumigation in different hypoxia conditions,the law of death of insect pests and the tolerance of different species to phosphine.The results showed that the effect of 200 mL/m^3 phosphine gas in the fumigation under oxygen content of 2%,3%,4%and 5%was better than that of 200 mL/m^3 phosphine gas under the constant oxygen condition,and the average correction mortality increased by more than 80%.When oxygen content exceeds 3%,the corrected mortality of the tested insects increased with the decrease of oxygen content.When the oxygen content dropped to 3%,the correction mortality was maximum and the oxygen content continued to be reduced.The corrected mortality of the tested insects decreased.In terms of time,more than 80%of the hypoxic groups were killed within 2 days and all died within 3 days,and the tolerance of rice weevil to 200 mL/m^3 phosphine was stronger than the Dominica under low oxygen conditions.

关 键 词：低氧 磷化氢 熏蒸 校正死亡率 

分 类 号：S379.5[农业科学—农产品加工]