用不同格数的玻板测定灭鼠效果的研究

以往报道说明,在格粉板法中,用400格玻板比用100格玻板测定灭家鼠效果更准确(赵承善等,1983)。之后,又报道用12格框架计数粉区上鼠迹所占格数,计算灭鼠率(李镜辉等,1983)。为简便400格粉板法,并对不同格数玻板的准确性进行探讨,进行了本项工作。现报道如下。

A STUDY ON GRID/PLATE METHOD AND THE ACCURACY OF DETERMINING DERATIZATION RESULTS BY TRANSPARENT PLATES OF VARIED SQUARE NUMBERS

This paper reports a simplified grille/plate method. The tests have been carried out in three groups. The deratization rates with the 400 square plates are 55.10%, 84.63% and 97.73% respectively; with the 100 square plates are 54.31%, 84.80% and 97.80% respectively; with the 50 square plates are 55.61%, 84.76% and 97.82% respectively; with the 25 square plates are 55.24%, 83.84% and 97.62% respectively.The results suggest that the improved method is both simple and accurate. Comparatively, observations have been made at the same time on the deratization rates with the transparent plates divided evenly into 9, 12, 25, 50, 100 and 400 squares. The results show that the more the number of squares, the more accurate is the deratization rate.