不同储粮环境下谷蠹的地理分布特征研究

Geographical Distribution Characteristics Research of Rhyzopertha dominica(Fabricius)in Different Grain Storage Environments

谷蠹是重要的蛀食性储粮害虫,研究其地理分布特征对储粮害虫预测预报具有一定的意义,能够为防治决策提供科学、可靠的依据。本研究在全国范围内选取具有代表性的187个地市开展现场调查,涉及粮库412个,粮油加工企业467个,农户418家。所调查的辽宁、青海、黑龙江、吉林4省份23地市未见谷蠹,山西、甘肃、宁夏等9省份43地市中有15地市发现谷蠹,为少数城市分布;山东、河南等4省份35地市中有25地市发现谷蠹,为大部分地市分布;湖北、湖南等14省份86个调查地市均发现谷蠹。黄河以南较黄河以北地区谷蠹发生率较高,东南沿海地区谷蠹发生率最高。

Rhyzopertha dominica is one of main stored grain pests.Knowing the occurrence and distribution of this pest will be beneficial for stored grain pests prediction and forecast,also can provide scientific and reliable theorical evidence for the stored grain pest integrated management.Our survey on occurrence and distribution of the pest was carried in 187 prefectural-cities in China,by the means of on-site sampling and collection.Totally,412 grain depots,467 flour and rice mills,418 farmer grain storages were unvestifated..No pest specie of R.dominica was found in 23 prefectural-cities of Liaoning,Qinghai,Heilongjiang and Jilin province.R.dominica was found and collected in 15 prefectural-cities among of 43 prefectural-cities which belong to 9 provinces including Shanxi,Gansu,Ningxia,and so on.Also,R.dominica was collected in 25 prefectural-cities among of 35 prefectural-cities which belong to Shandong,Henan,Guizhou and Jiangsu province,respectively.The R.dominica was found and collected as samples in all 86 prefectural-cities of 14 provinces including Hubei,Hunan,and so on.As the results from this survey,the amount of R.dominica found in the south of the Yellow River was more than that of the north.The occurrence of R.dominica in the southeast coastal area is the highest.