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This paper reports a the Chongzuo suburb vegetable base in open the cruciferous vegetables mainly the development of pest infestation dynamic and screening biological low toxicity findings of the effect of pesticides on the control of major pests . Clear Chongzuo City suburb vegetable base open field cruciferous vegetables on 8 orders, 20 families and 49 species of insects can be seen in recent years, and other harmful animals , including Orthoptera 5 families , Homoptera 3 Section 10 Section 4 , of the species, Hemiptera , Coleoptera 3 Section 8 kinds of the Lepidoptera 7 families and 15 species ( class ) , four species , Diptera , Hymenoptera families , two kinds of snails , and drill screw . Eight kinds of perennial serious Occurrence of major pests , including Lepidoptera the diamondback moth Division of diamondback moth , Noctuidae beet armyworm , Spodoptera litura Pieridae Pieris ; Coleoptera Chrysomelidae yellow striped jump A ; Homoptera Aphididae green peach aphid , turnip aphid , cabbage aphid peak of cabbage worm and diamondback moth larvae , with micro- emulsion of 15% triazophos · abamectin 750 ml / ha control diamondback moth 3,7 days after the drug control efficiency of 83.69% , 91.12% ; 3,7 days prevention Pieris , drug control effects were 82.26% , 92.04% , and its efficacy was significantly better than the 1.0% avermectin 20% triazophos EC the conventional dose effect is considerable , and safety of the crop . 3 , mu 5% Fipronil SC 20ml 2.5% Decis EC 30ml mixed use , more than 80% of the vegetables on the diamondback moth , beet armyworm control effect . 4 , prevention and control of diamondback moth selection of the dose the abamectin Fipronil (240 ml / ha 300ml/ha ) the , Pieris rapae selected dose of abamectin Fipronil (180 ml ??/ ha 225ml/ha ) . 5,1.8 % in accordance with ivermectin and 1.8% Avermectin to Plutella xylostella have good control effect 6mg / · L Liquid prevention drug after 4,7 days the average correction control effect were 94.92% and 83.64% , 97.26% and 89.00% ; accordance with ivermectin and abamectin 9 mg / L against Liriomyza sativae drug after three days old larvae average correction control efficiency of 72.18% and 51.48% , young larvae of 90.42% total control efficiency of 81.55% and 81.28% , and 68.43% : 7 days after the drug ivermectin common bean leaf protection effect of the lower leaves were 83.46% , 67.85% and 42.90% , with an average of 58.22 % avermectin leaf protection effect were 41.69% , 45.93% and 43.83% , an average of 44.46% . Of the diamondback moth , leafminer control efficiency and leaf protection is better than abamectin ivermectin .
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