赤拟谷盗在小麦粮堆内部分布特征研究  

Study on the Distribution Characteristics of Tribolium Castaneum in Wheat Grain Heap

作　　者：张泽钰 周国鑫 崔淼 汪中明 ZHANG Ze-yu;ZHOU Guo-xin;CUI Miao;WANG Zhong-ming(College of Modern Agriculture,Zhejiang A&F University,Hangzhou,Zhejiang 311300,China;Institute of Grain Storage and Logistics,Academy of National Food and Strategic Reserves Administration,Beijing 100037,China)

机构地区：[1]浙江农林大学现代农学院,浙江杭州311300 [2]国家粮食和物资储备局科学研究院粮食储运研究所,北京100037

出　　处：《粮油食品科技》2024年第6期219-225,共7页Science and Technology of Cereals,Oils and Foods

基　　金：国家外国专家项目(G2022057001L);中央级公益性基本科研业务费专项(ZX2229)。

摘　　要：利用新型害虫探管诱捕器,采集分析赤拟谷盗在试验仓内小麦粮堆中的活动和分布情况,探究其在粮堆内的分布规律及主要影响因素,建立虫口密度评估方程,为其准确监测预警提供科学依据。结果表明:赤拟谷盗的每日捕获数不会随时间出现明显变化。当虫口密度较小时,赤拟谷盗主要在粮堆内的顶层和中层聚集分布;当虫口密度较大时,赤拟谷盗在粮堆内均匀分布。赤拟谷盗表现出趋温性和趋湿性,其适宜活动的温度为22~30℃,相对湿度为40%~53%。综合分析害虫时空分布的规律以及温度、湿度的影响,可根据探管透捕器捕获害虫数量对实际虫口密度做出估算,其虫口密度评估方程为:y=10.566-0.321×x_(1)-0.017×x_(2)+0.026×x_(3),x_(1)为温度(℃)、x_(2)为相对湿度(%)、x_(3)为捕获数(头)。Using a new type of insect probe trap,the activity and distribution of Tribolium castaneum in wheat grain bulks inside experimental silos were collected and analyzed to investigate its distribution patterns and main influencing factors within the grain bulks.An equation for estimating insect population density was established to provide a scientific basis for accurate monitoring and early warning.The results showed that the daily capture of Tribolium castaneum did not change significantly over time.When the insect population density was low,Tribolium castaneum was mainly distributed in the top and middle layers of the grain bulk.When the insect population density was high,Tribolium castaneum was uniformly distributed within the grain bulk.Tribolium castaneum exhibited thermophilic and hygrophilic behaviors,with an optimal activity temperature range of 22~30℃and a relative humidity range of 40%~53%.By comprehensively analyzing the spatial and temporal distribution patterns of the insect population and the effects of temperature and humidity,the actual insect population density could be estimated based on the number of insects captured by the probe traps.The equation for estimating the insect population density was:y=10.566-0.321×x_(1)-0.017×x_(2)+0.026×x_(3),x_(1):temperature(℃),x_(2):relative humidity(%),x_(3):number of insects captured.

关 键 词：赤拟谷盗 探管诱捕器 分布规律 影响因素 虫口密度 

分 类 号：TS201.6[轻工技术与工程—食品科学]