Study on the Technique Effects of Controlling Scarabs'Dominant Species by Photinia fraseri aside Peanut Crop Field
The methods of gauze caging and bioassay were conducted to carry out trapping and killing of main beetles,Holotrichia parallela and Anomala corpulenta,by planting Photinia fraseri accompanied with insecticides applying on crop-planting field.The results showed,the trap effect of scrabs Holotrichia parallela by side-planting Photinia fraseri were significantly higher than side-planting elm(25.48% ),peanut(25.00% ),maize(36.06% ),soybean(36.54% ),mulberry(36.54% ).And for Anomala corpulenta,the trap effects by planting Photinia fraseri were significantly higher than side-planting elm(22.83% ),maize(20.47% ),soybean(21.26% ),mulberry(35.43% ),but peanut excepted.Fur-thermore,side plants plus pesticides experiments were conducted.The results of effect and duration of insecticides on two main beetles showed,that 60% imidacloprid SC exhibited higher controlling ef-ficient for Holotrichia parallela(49.00±4.38)and Anomala corpulenta(10.50±2.47)than 5% lambda-cyhalothrin,40% phoxius EC and 35% chlorpyrifos CS.The duration effect could up to 10 days intervals.Therefore,Photinia fraseri grown as eco-friendly plant can be planted aside peanut field,its combining with 60% imidacloprid SC can effectively reduced the number of Holotrichia par-allela and Anomala corpulenta,and subsequent control the damage of larva grubs on crop land.
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