大型食品冷库鼠类的生态调查及防制试验

The Ecological Behaviour Investigation and the Control Test of the Rodent in the Large Foodstuff Freezer

１９９５年１１～１２月对大型食品冷库鼠类生态进行短期调查和防制研究。用向日葵籽、稻谷、大米进行诱饵选择试验，鼠类摄食向日葵籽显著高于稻谷、大米。用向日葵籽盗食法调查急冻、冷藏、低温３种库的鼠密度，分别为９０．８％、５０．３％、２７．５％。温度差别未明显对鼠类的生活栖息产生影响。白天盗食率占全天盗食数的４２．４％，夜间占５７．８％。在不停产清库条件下，连续投放０．０５％敌鼠钠盐向日葵籽毒饵７天，平均盗食率达４１．８％，灭鼠后密度分别降至１．１８％、２．６６％、２．２９％，平均为２．２３％，平均灭鼠率９５．５４％。

A short-term investigation and a control test were carried out on the rodents in the large foodstuff freezer in Nov./Dec. 1995. Sunflower seeds, paddy, rice were used in the bait-selecting experiment, the sunflower seeds was better palatable than the paddy and rice. Investigated with the sunflower seeds feeding method,the rat densities of quick freezer, freezer and low-temperature storage were 90. 8%, 50.3% and 27.5% respectively. Difference in temperature did not affect the life and rest of rodents obviously. Feeding rate in the day-time was 42.4% of the wholeday feeding amount, while it was 57.8% at night.7 days after baiting the sunflower seeds with 0.05% Diphacinone Sodium continuously, the average feeding rate of 7 days reached 41.8%. The rat density dropped to 1.18%,2.66 %,2.29 % respectively,the average rat density was 2.23 % and the average rate of killing rats was 95.54 %.