摘要
在粮堆对立两侧分别设置25℃-30℃、20℃-30℃、20℃-35℃、30℃-30℃温度梯度,观察米象、谷蠹和赤拟谷盗成虫在粮堆中的迁移分布状况,结果表明:米象、谷蠹和赤拟谷盗成虫在一定粮堆温度梯度内的分布趋向都表现出了显著的差异性(p<0.05)。米象除了在粮堆温度梯度25℃~30℃下分布没有显著差异外,与赤拟谷盗在一定温差的粮堆中均表现出了显著的趋温性,谷蠹在粮堆温度20℃~30℃范围内趋向于聚集在粮温较低的区域,粮堆温度大于30℃时趋向于聚集在粮温较高的区域。降温后,谷蠹受低温影响停留在粮堆外围区域,赤拟谷盗没有明显趋势,米象趋向迁移到温度较高的粮堆中心。
In this paper, we set different temperature gradients on opposite sides of steel bins filled with rice: 25℃-30℃, 20℃-30℃, 20℃-35℃, 30℃-30℃, to studied the migrant and distribution of three stored grain pests including Tribolium castaneum(Herbst)adults, Sitophilus oryzea(Linnaeus) adults and Rhizopertha dominica(Fabricius) adults, the results showed that the distribution trends of adults of T. castaneum, S. oryzea and R. dominica in a certain grain temperature gradient had significant difference(p<0.05). There is no significant difference in the distribution of S. oryzea except at the grain storage temperature gradient of 25℃-30℃, which is consistent with the quantitative distribution of T. castaneum in the grain bulk with a certain temperature difference. They all tend to gather in the areas with higher grain temperature. The R. dominica tended to gather in the areas with lower grain temperature in the grain storage temperature range of 20℃-30℃, and when the grain storage temperature is higher than 30℃, it tended to gather in the areas with higher grain temperature. After cooling, the R. dominica stayed in the peripheral area of the grain storage under the influence of low temperature, and there was no obvious trend for T. castaneum, and the S. oryzea tended to migrate to the center of the grain storage with higher temperature.
作者
穆振亚
严晓平
李丹丹
王双林
陈晋莹
Mu Zhenya;Yan Xiaoping;Li Dandan;Wang Shuanglin;Chen Jinying(College of Food Science and Engineering,Nanjing University of Finance and Economics,210023;Sinograin Chengdu Storage Institute Co.,Ltd.,610091)
出处
《粮食储藏》
2019年第3期32-37,共6页
Grain Storage
基金
2015年公益性行业科研专项“我国储粮虫螨区系调查与虫情监测预报技术研究”(2015130024)
关键词
温度梯度
粮堆
储粮害虫
迁移分布
temperature gradients
grain bulk
stored grain pests
migration and distribution
