The Key Magazine of China Science and Technology
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Research on stored grain insects in Jiangxi province
The insects in stored grain of grain depots, grain processing factories, feed mills and farmers household in 5cities in Jiangxi province were investigated.60 species of stored grain insects were collected, most of them were coleopteran reached to 42 species,accounting for 70%. Tribolium castaneum Herbst and Rhizopertha dominica Fabricius were most common stored grain insects in this area, both with the total occurrences of 69.6%. Total occurences of 12 species of main pests were generally over 10%. The results also showed there were only 5.4 species per depots on average in grain depots. Compared with grain depots, more insect species were found in grain-processing factories, feed mills and farmers household, about 11.8 species per survey spot on average. It was found that there were many species of natural enemy of stored grain pests in Jiangxi province, the main species were parasitic flies, stinkbugs, pseudoscorpions and predatory mites, which had natural advantages of biological control of stored grain pests. Moreover, Cryptolestes pusilloides (Steel et Howe) was collected in Jiangxi province for the first time.