Research Of The Occurrence Characteristic And Control Effect On Main Fruit Pest In Anhui Province

Anhui province was located at the junction of the north and south in China,in the transition area of northern subtropical and warm temperate zone.Mild climate,abundant sunshine,clear monsoon and rainfall.The fruit tree resources were rich in Anhui province,there are cultivars,46 species 900 varieties and wild,40 varieties.This paper investigated on 5 kinds of characteristic fruit orchard in Anhui,respectively were pear in Dangshan,pomegranate in Huaiyuan,loquat in Sheixian,.Aimed at to find the regulation of the main pest occurrence and the control method.In order to control the pest effectively in the orchard and reduce the production loss.i.The main pest occurrence and prevention of Pear in DangshanThe monitored results of Pear Psylla population dynamics from 2011 to 2014 indicated that there were 5 or 6 occurrence generations Psylla a year.Overwintering generation and 1st generation was clearly but the the rest of the generations overlap severely.A small amount of eggs hatched to be 1st nymph in early April,the most on Apr.20th.The main period of egg hatching of 2nd generation was in late May.Overwintering adult waked around March 10 every year,the 1st adults waked form late April to early May.After October,the nymph of last generation became overwintering adult by eclosion.Used 4 pesticides,pyrethroids,spirotetramat,abamectin and matrine.14 days later,the control effect were 86.12%,95.62%,81.95%,93.82%,respectively.Besides,there were other pest of Dangshan pear,such as busck,the larva eat bud and friut.Janus piri,the important pest which damage pear tree in spring.The prevention strategy in orchard were using both agricultural control and chemical control method.ii.The main pest occurrence and prevention of Pomegranate in Huaiyuan.At present,there were varieties of pest occurred in pomegranate tree in Huaiyuan.The test classified pest by its damage characteristics,were fruit-boring insect pest,defoliator pest,trunk worms and piercing-sucking pest.When conducted the control,take peach borer as example,treated with Dakang EC,Cypermethrin EC and Quanli EC in fields,the result indicated that three pesticide all have a remarkable control effect,Dakang was the best,the rate of intact fruit was 94.81%.The prevention strategy in orchard were mainly using pesticide,combined with agricultural and biological control method.iii.The main pest occurrence and prevention of Loquat in ShexianThe main species pest of Shexian loguat orchard in south Anhui were:phylloxera,Melanographia flexilineata Hampson and Phalera flaivescens.The prevention strategy in orchard were using both agricultural control and chemical control method.Screening of fungicides on Melanographia flexilineata Hampson in laboratory showed that,abamectin,acetamiprid and fipronil all had a good control effect.One day after treated,larva lost its appetite and body was slowly shriveled,then died.Six day later,population mortality of all treatments were 100%.Abamectin EC 2000 times,Acetamiprid EC 1000 times and Fipronil SC 2000 times had the best control effect.