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1988年9月,我们在鸡场灭鼠时,分别将磷化锌和敌鼠钠盐掺入经筛选的诱饵中制成毒饵,进行灭鼠效果观察比较,现报告如下。 (一) 鼠情调查 鸡房内有鼠洞13个,鸡房外墙基处、杂草丛及菜地里有鼠洞240个。我们从鸡舍后面挖掘鼠洞共捕鼠25只,经鉴定皆为褐家鼠。室内外粉迹法表明,鼠密度为87％。 (二) 诱饵的筛选 我们将诱饵分成干湿两类。干诱饵选用豆油炒花生米、香油拌碎玉米,湿诱饵为1cm~3大小的苹果块和黄瓜块。将上述四种诱饵分堆,每堆10g,室内外随机布放,晚放晨收,共3天。每种诱饵每晚500g,次晨称取余量计算各种诱饵消耗量(见表1)。四种诱饵消耗无显著性差异(P>0.05)。一般认为,褐家鼠喜食含水份的食物,但在鸡场中此特点不明显,可能与鸡场内水源、食物充足有关。由于花生米价格贵,湿诱饵易干缩等缺点,我们选择香油拌碎玉米作为试验诱饵。
In 1988 September, we rodent in the chicken farm, respectively, zinc phosphide and the enemy mouse sodium salt into the selected bait bait made to observe and control the effects of comparison, are as follows. (A) Murine investigation There are 13 rat holes in the hen house, and there are 240 rat holes in the weeds and vegetable fields at the base of the external walls of the chicken houses. We dug 25 holes from the back of the chicken coop to catch rats, which were identified as Rattus norvegicus. Indoor and external flour method shows that the rat density was 87%. (B) the selection of bait We bait will be divided into wet and dry two categories. Dry bait use bean oil fried peanuts, sesame oil mixed with corn, wet bait 1cm ~ 3 size of apple and cucumber pieces. The above-mentioned four kinds of bait pile, each pile of 10g, indoor and outdoor random placement, late morning morning closing, a total of 3 days. Each bait night 500g, next morning weighed the amount of bait consumption calculation (see Table 1). There was no significant difference in the four bait consumption (P> 0.05). It is generally believed that Rattus norvegicus likes food containing water, but this characteristic is not obvious in the chicken farm, which may be related to adequate water supply and adequate food in the farm. Due to the high price of peanuts, wet bait easy to shrink and other shortcomings, we choose sesame mixed corn as a test bait.