Occurrence Situation Of Main Pest And Natural Enemy And Non-environmental Production In Shaoyang County

Shaoyang County products many kinds of vegetables,and they develop all theyear round,the pests of them are very much,all of vegetables live different kinds ofprimary pests in every season. In a year, the primary pests of disserving cruciferousvegetables is: Plutella xylostella, Pieris rapae Linnaeus Laphygma exigua Hubner,Prodennia lirtura Fabricius, Aphis, Phyllotreta vittata Fabricius, etc. the primarypests of disserving vegetables at spring and summer: Trialenrodes vaporariorum(Westwood), Liriomyza sativae, Aphis, mite, Helicoverpa armigera(HÇ–bner), Plutellaxylostella, etc, the primary pests of disserving vegetables at autumn and winter: Deliaplatura,Delia antigua meigen,Luperomopha susuralis Chen,Liriomyza chinensis(Kato),Acrolepia alliella Semenov et Kuznetsov,Thurips tabaci Lindimen, etc.Moreover, we discover many types of natural enemy insects through theinvestigation of the types of natural enemy insects of vegetable's major pests inShaoyang county, and the primary types are egg-parasitoids, larva-parasitoids andpredatory natural enemy. Thereinto,there are twenty-nine types of egg-parasitoids andlarva-parasitoids together, and six kinds twelve species of predatory natural enemy.We have analysed the dataes of occurring complexion about Prodennia lirturaFabricius, locust, Plutella xylostella, Ostrinia furnacalis, Aphis. Especially forprodennia lirtura Fabricius,we have analysed many years it's dataes and have wentdeep into analysing the occurring reasons.Recent years, the vegetable production delevolpped very fast and the area hasbeen widened of vegetable planting along with adjusting of agriculture plantingconfiguration in Shaoyang county. Shaoyang county is strongly building quality ofvegetable,and towards realizing from quantity of general vegetable production toquality and benefit of non-environmental production. At present, Shaoyang county'svegetable production develops very fast at new flat, but there is a distance tocomprehensive realizing non-environmental production of vegetable.Aim at have been developing non-environmental production of vegetable, wehave acquired much progress, but we had some mistakes and some distances of technology and encountered some difficulties, so I bring forward somecountermeasures.