摘要
储粮害虫是造成粮食数量和质量损失的重要因素,为了寻求绿色、安全、生态的杀虫技术,本研究针对小麦中5种主要储粮害虫,使用频率为40.68MHz的射频杀虫仪研究物理加热杀虫技术。针对粮库中常见的耐温害虫谷蠹,研究射频处理时间、极板间距及粮层厚度对射频杀虫的影响。筛选出射频杀虫的最优条件,在此条件下研究对赤拟谷盗、锯谷盗、长角扁谷盗和玉米象的杀灭效果,并初步分析射频处理对小麦成分的影响。结果表明,针对使用的射频杀虫仪,粮层厚度9cm、极板间距10cm、处理时间330s为最优杀虫条件,在该条件下,其余4种主要害虫的死亡率均达到90%以上。射频处理对小麦中的水分、湿面筋值等成分不会造成显著变化,不影响小麦的食用价值。本研究为射频加热物理防治储粮害虫提供重要的基础参数,也为储粮害虫的绿色生态综合控制技术提供了新思路和新方法。
Stored grain pests are critical factors causing grain quantity and quality loss. Developing an effective, novel, and safe method of controlling stored grain pests must be on schedule. In this study, five main grain storage pests in wheat were studied by physical heating insecticidal technology using a radio frequency insecticidal instrument with a frequency of 40.68 MHz. While, the radio frequency was a pilot-scale, 40.68 MHz system. Rhizopertha dominica Fabricius was used to investigate the effects of treatment time, distance between two polar plates and the thickness of grain. Screening out the optimal conditions for radio frequency insecticide and studying the mortality rate of Tribolium castaneum Herbst Oryzaephilus surinamensis Linnaeus Cryptolestes pusillus Schoenherr Sitophilus zeamais Motschulsky under the conditions. Then the effect of radio frequency treatment on the component of wheat preliminarily was analyzed. The results showed that the optimal condition was 9 cm grain depth, 10 cm polar plates distance and 330 s treatment time. Under such condition, the mortality rate of 4 major pests reached more than 90%. Radio frequency treatment did not cause significant changes for important parameters such as moisture and wet gluten in wheat. To sum up, this study provideed important basic parameters for radio frequency heating physical control of stored grain pests as well as new ideas and methods for green ecological integrated control technology of stored grain pests.
作者
孙为伟
曹阳
刘璐
伍祎
唐培安
Sun Weiwei;Cao Yang;Liu Lu;Wu Yi;Tang Peian(School of Food Science and Engineering,Collaborative Innovation Center for Modern Grain Circulation and Safety,Nanjing University of Finance and Economics,Nanjing 210023;Academy of State Administration of Grain,National Engineering Laboratory of Grain Storage and Logistics,Beijing 100037)
出处
《中国粮油学报》
EI
CAS
CSCD
北大核心
2019年第5期95-100,共6页
Journal of the Chinese Cereals and Oils Association
基金
国家重点研发计划(2016YFD0401004-2)
粮食公益性行业科研专项(201513002-5-5)
江苏省六大人才高峰高层次人才项目(NY-057)
江苏省高校优势学科建设工程(JSYXK201403)
关键词
射频
物理防治
储粮害虫
radio frequency
physical control
stored grain pests
