论文部分内容阅读
1982年10月至1983年12月在济南东郊三个各150户左右的村进行了试验。灭鼠前及灭鼠后的每个月均用格粉板法进行鼠密度调查,其中一个村于12月中旬用大隆毒饵灭鼠,灭鼠率达99.28%,7个月内鼠密度一直很低,但经过一年鼠密度比前一年仍升高4.42%,另一个村于11月初用敌鼠钠毒饵灭鼠,灭鼠率为77.76%,5个月内鼠密度较低,经过一年比前一年上升了1.7倍;另一个村于8月份用敌鼠钠毒饵灭鼠,灭鼠率仅为55.65%,灭鼠后鼠的密度恢复得很快。11月和12月鼠密度分别仅比8月低34.73%和29.31%。作者分析了各有关因素后认为,在山东一年中最佳灭鼠时机为秋末冬初的11月下旬至12月上旬。其他较好的时间为12月至来年3月,在这段时间内灭鼠效果较好,灭鼠后维持低密度的时间较长。
October 1982 to December 1983 in the eastern outskirts of Jinan, three of about 150 villages were tested. Rodent densitometry was conducted before and after delustering with a grid-plate method. One of the villages eradicated rats with Dalong bait in mid-December. The rodent-killing rate reached 99.28%. Rat density remained for 7 months Very low, but after one year the density of rats still increased by 4.42% over the previous year. Another village eradicated rats with sodium molybdate in early November, with a rate of 77.76% and a low density within 5 months A year earlier than the previous year increased by 1.7 times; in another village in August with anti-rat poison sodium bait, rodent rate was only 55.65%, rodent rat density recovered quickly. Rat densities in November and December were only 34.73% and 29.31% lower than August respectively. After analyzing all the relevant factors, the author thinks that the best timing of rodenticide in Shandong in late autumn is from late November to early December. Other better time from December to March next year, during this period the rodent control effect is better, rodent to maintain a low density for a long time.