脐橙园桃蛀螟的发生规律与绿色防控技术研究

Occurrence Regularity, Prevention and Control Measures of Dichocrocis punctiferalis in orange orchard

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11 190 kg/hm2,市场价格提高0.4元/kg,产值增加57 330元/hm2,用工成本减少1 000元/hm2,产投比明显高于常规防控区。

The life habits, damage characteristics, occurrence reason, prevention and control measures and control effect of dichocrocis punctiferalis were investigated in orange orchard in Wuling mountainous area. The results showed that dichocrocis punctiferalis had 4 generations every year in this area, which did harm to orange fruits from second generation. The occurrence reasons were unsuitable cropping system, unsuitable climatic factor and lack of control. Based on the professional control system for large-scale pest prevention, coordinate using agricultural, physical and chemical measures to control dichocrocis punctiferalis in demonstration zone. In comparison with the conventional protection zones, the demonstration zone reached higher output and input ratio. The commodity fruit rate raised 14.4 percentage points, the yield increased 11 190 kg/hm2, the market price raised 0.4 yuan/kg, the output increased 57 330 yuan/hm2, while the labor cost decreased 1 000 yuan/hm2.