脐橙园桃蛀螟的发生规律与绿色防控技术研究

摘要

The life habits,dam age characteristics,occurrence reason,prevention and controlm easures and controleffectofdichocrocis punctiferalis w ere investigated in orange orchard in W uling m ountainous area. The results show ed that dichocrocis punctiferalis had 4 generations every year in this area, w hich did harm to orange fruits from second generation. The occurrence reasons w ere unsuitable cropping system ,unsuitable clim atic factor and lack of control.B ased on the professionalcontrolsystem for large-scale pestprevention, coordinate using agricultural,physicaland chem icalm easures to controldichocrocis punctiferalis in dem onstration zone.In com parison w ith the conventionalprotection zones,the dem onstration zone reached higheroutputand inputratio.The com m odity fruitrate raised 14.4 percentage points,the yield increased 11 190 kg/hm 2,the m arketprice raised 0.4 yuan/kg,the outputincreased 57 330 yuan/hm 2,w hile the laborcostdecreased 1 000 yuan/hm 2.%对武陵山区脐橙园桃蛀螟的生活习性、为害特点、重发的原因，以及绿色防控的具体措施和防效等进行了调查研究。结果表明，该虫在武陵山区一年发生4代，从第二代开始为害脐橙果实；该害虫在武陵山区脐橙园重发主要是耕作制度不当、气候因素、防治不力等造成的；通过绿色防控大区示范，以专业化统防统治为基础，协调运用农业、物理、化学防治方法，与常规防控区相比，桃蛀螟绿色防控区的商品果率提高14.4个百分点，产量增加11190 kg/hm2，市场价格提高0.4元/kg，产值增加57330元/hm2，用工成本减少1000元/hm2，产投比明显高于常规防控区。