摘要
在高大平房仓(长50m,宽30m,装粮线高度6m)开展食品级惰性粉防治储粮害虫技术与内环流均温系统相结合的改进研究,以提高害虫防治效果。测定了内环流均温系统的单位面积通风量和系统总阻力,粮堆表层向下深度0.9m内的惰性粉分布情况,惰性粉处理后储粮害虫的死亡情况。结果表明:结合单位面积通风量0.0016m/s,系统总阻力300.2Pa的内环流均温系统施用惰性粉,惰性粉颗粒能够穿透0.3m深度的粮堆,质量浓度达到(2.96±0.59)mg/m^3,无法穿透到深度0.6m和0.9m的粮堆。在粮堆表层深度0.3m,土耳其扁谷盗、长角扁谷盗和锈赤扁谷盗成虫试虫处理7d后校正死亡率均达到100%,差异不显著;玉米象和谷蠹成虫试虫处理8d后校正死亡率分别为(84.8±4.7)%、(56.5±2.3)%;赤拟谷盗成虫试虫处理11d后校正死亡率为(65.0±3.6)%。结合内环流均温系统施用惰性粉,降低劳动强度的同时有较好的害虫防治效果,因此具有较好的应用前景。
The combination of the food-grade inert dust and inner circulation system was applied in a large warehouse(50 m length,30 m width,and 6 m grain height)to improve the pest control effect.The ventilation speed of per unit area,the total resistance of the inner circulation system,the distribution of inert dust within 0.9 m depth below the surface of grain bulk,and the pest control effect were measured.The results indicated that the ventilation speed of per unit area was 0.001 6 m/s and the total resistance of the inner circulation system were 300.2 Pa.The inert dust particles were able to penetrate the grain bulk at 0.3 m depth with the concentration of(2.96±0.59)mg/m^3,however,the concentration was zero at 0.6 m and 0.9 m depth.The corrected mortality of 3 species of Cryptolestes reached 100%after 7 d,and the difference was not significant.The corrected mortality of Sitophilus zeamais and Rhyzopertha dominica was(84.8±4.7)%and(56.5±2.3)%respectively after 8 d.The corrected mortality of Tribolium castaneum was(65.0±3.6)%after 11 d.Applying inert dust in combination with the inner circulation reduced the labor intensity and had a good pest control effectiveness,so it could be applied widely in the future.
作者
张振军
曹阳
李建智
李建
李燕羽
伍祎
汪中明
ZHANG Zhenjun;CAO Yang;LI Jianzhi;LI Jian;LI Yanyu;WU Yi;WANG Zhongming(School of Food Science and Technology,Henan University of Technology,Zhengzhou,Henan 450001;Academy of State Grain Administration of China,Beijing 100037;State Grain Reserves Dalian Depot Ltd.,Dalian,Liaoning 116033)
出处
《河南工业大学学报（自然科学版）》
CAS
北大核心
2019年第3期103-107,共5页
Journal of Henan University of Technology：Natural Science Edition
基金
国家重点研发计划(2016YFD0401004-2)
关键词
惰性粉
内环流
储粮害虫
inert dust
inner circulation
stored grain pests
