一、实验目的谷象是我国对外检疫对象之一。在口岸常从进口粮中截获。我国每年进口粮不少于1500万吨,进口粮又多集中在几个大口岸进货,进粮时间在冬季占的比重较大。发现检疫对象后就要在锚地进行熏蒸。目前在港口用于大船熏蒸的药剂主要是溴甲烷。溴甲烷沸点高,冬季熏蒸效果不好,有时药量高达70克/米~3仍熏不死虫子,因处理谷象造成压船现象也很严重。为了探讨处理谷象的新途径,了解谷象、玉米象、米象对低温的抗 First, the purpose of the experiment Valley as one of China’s foreign quarantine objects. In the port often intercepted from imported food. China imports no less than 15 million tons of grain each year. Imported grain is mainly concentrated in the purchase of several large ports, and the proportion of grain in winter accounts for a large proportion. After the quarantine object is found, it is necessary to fumigate at the anchorage. Currently in the port for large-scale fumigation agents mainly methyl bromide. Methyl bromide boiling point, winter fumigation is not good, and sometimes the dose of up to 70 g / m ~ 3 is still smoke insects insects, as the result of the treatment of valley elephant crush is also very serious. In order to explore the new ways to deal with cereal elephants, understand the elephants, corn elephants and rice elephants against low temperature