Population Ecology Of Major Stored Product Insect Pests In Large Warehouse

During grain storage period, various pests such as insects, mites and microorganisms can result in huge grain quantity and quality losses. Meanwhile, Grain storage period is shortened and storage cost is also increased. It brings great burden to grain warehouse of our country. In recent years, our country has built up the storage grain system and established a great deal of modern grain warehouses to store grain for a few years, which put forward higher request to prevent and control grain pests. However, the actual grain storage circumstance is not optimistic. Aimed at the current difficulties, the relatively short storage time and grain quality deterioration faced by modern grain storage, systematic researches on nontoxic control measures to stored grain insect pests are conducted under the guidance of ecological principles for the purpose of elucidating the bionomics and ecologics of stored grain insect pests theoretically and control the insect pests effectively. In the practice it plays an important part in insect surveys, the choice of grain method, the improvement of grain storage level, the extension of storage time and the delay of grain quality deterioration.1 Research on stored product insects in large warehouse1.1 Community composition and structure analysis of stored product insects in large warehouseBy means of GJ89 type probe trap investigation of stored grain insects and analysis of community composition and structure of large warehouse were carried out in Chongqing Beibei State Grain Reserve Depot. The results showed that there were main Lipocelis botrychophilus, Cryptolestes ferrugineus, Tyrophagus putrescentiae and Sitophilus zeamais etc in large warehouse...