10%大功臣WP防治梨木虱试验研究

Study on Psylla chinensis Control Using 10% of Dagongchen WP

以10%大功臣WP为试验药剂,以40%水胺硫磷EC为对照,研究10%大功臣WP对梨木虱的防治效果。结果表明:10%大功臣WP 30、40、50mg/L防治梨木虱幼龄及老龄幼虫,均有一定效果,对幼龄幼虫防效优于老龄幼虫。50mg/L施用量,防效可达72%～91.8%,建议生产中10%大功臣WP用于防治梨木虱幼龄幼虫,并注意与其它内吸药剂的轮换施用,推荐施用剂量50mg/L。

Using 10% of Dagongchen WP as test material, and the using 40% of isocarbophos EC as control. The control effect of Dagongchen WP on pear Psylla was studied. The results showed that the concentration of 30,40,50 mg/L of 10% Dagongchen WP in one liter of water had satisfactory effects on pear Psylla control ,regardless young or aged Psylla. And the effects on the young Psylla was better than on the aged. The concentration of 50 mg/L had control effects over 72 % - 91.8 %. In production practice, 10 % Dagongchen WP was recommended to control young pear Psylla and the suggested concentration was 50 mg/L. But take care to use this insecticide and other systemic insecticides alternately.