筛胸梳爪叩甲的防治技术研究

筛胸梳爪叩甲是我国南方地区重要的笋期害虫.研究了林间挖笋除虫、黑光灯诱杀及药剂防治3种方法对筛胸梳爪叩甲的控制效果.结果表明:3种技术措施均能显著降低该虫的危害率和虫口密度,其中药剂防治效果最明显.3 a持续挖笋除虫的防治效果达(22.76±3.90)％;每年单盏黑光灯年平均诱捕量可达(1 143.8±318.7)头,连续6 a的灯光诱杀可将竹笋危害率由防治前的(56.05±2.83)％降至防治后的(39.21±2.83)％;连续施用5％辛硫磷+3％毒死蜱颗粒剂3 a年可将竹笋危害率由防治前的(69.62±5.36)％降至(21.17±7.65)％,防治效果达(70.11±10.99)％.

Control Techniques of Melanotus cribricollis (Coleoptera: Elateridae)

Melanotus cribricollis is one of the most important pest insects that damage bamboo shoots in South China, and no report was found in the control techniques of this insect. The effect of three control methods, shoot-removing, light trapping and insecticidal control against M.cribricollis in fields were studied. The results showed that all the three methods could reduce the damage and density of wireworms significantly, and the insecticidal control was the most effective. The control efficiency of shoot-removing against bamboo wireworms was (22.76±3.90)% in three years; 1 143.8±318.7 adults of M.cribricollis could be caught per light per year, and the damage percent of shoots dropped from (56.05±2.83)% to (39.207±2.83)% with light trapping in 6 years. The insecticide blend of 5% phoxim and 3% chlorpyriphos showed to be effective against M. cribricollis, and the damage percent of shoots dropped from (69.62±5.36)% to (21.17±7.65)% in 3 years.