日本大蠊

日本大蠊

1

北方地区控制日本大蠊种群密度适时的研究

Study on the Optimal Time for Population Control of Periplaneta japonica in Northern China
2

结果：共发现4科4属8种蜚蠊，全省以德国小蠊为优势种群，日本大蠊次之。

There were 8 species belonged to 4 genera of 4 families .
3

天津口岸二类开放码头捕获日本大蠊

Japanese Cockroach was captured at regional port of Tianjin
4

日本大蠊已从1990年之前优势种退为一般常见种，分布场所较窄；

From 1990 , it became to be normal sort and distributed in narrow places .
5

现场试验在投放饵剂第1、10、20天后日本大蠊相关密度指数分别为25.7、17.3和9.8；杀灭率为66.0%、82.0%和92.2%。

In the field test , the PRI for Periplaneta japanica was 25.7 , 17.3 and 9.8 and the killing rate was 66 % , 82 % and 92.2 % for 1 , 10 and 20 d treatment , respectively .