Study on the Overwintering Characteristics and Control Strategies of Psylla chinensis
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摘要: 为更加有效地制订防治中国梨木虱（Psylla chinesis）的策略，本研究通过主干、主枝绑缚瓦楞纸模拟其越冬场所的方式，探究了中国梨木虱转入越冬场所与环境温度的关系，以及在树体越冬部位的特征，研究了"瓦楞纸+药剂""瓦楞纸+黑膜"组合方式对冬型梨木虱的防治效果.结果表明，当平均温度为5℃时，梨木虱开始转入越冬场所，当平均温度为0℃，田间梨木虱进入越冬态；梨木虱主要由枝梢转移至主干、主枝部位进行越冬.试验所用药剂（石硫矿物油、松脂酸钠、石硫合剂、联苯菊酯、毒死蜱）+瓦楞纸可对冬型梨木虱具有一定的驱避作用，以石硫矿物油的驱避作用最高；通过"瓦楞纸+黑膜"的方式可提高梨木虱越冬场所温度，增加其死亡率.本研究可为防治越冬代梨木虱提供技术指导.Abstract: To develop more effective control strategies of Psylla chinensis in China, this study used corrugated paper to simulate the overwintering place of the pest, and explored the relationship between its overwintering behavior and the environmental temperature, as well as the characteristics of the overwintering parts of the pear tree. The trapping and killing effects of the combination of "corrugated paper + pesticides" and "corrugated paper + black film" on winter-form pear psylla were also studied. The results showed that when the average temperature was 5℃, the winter form pear psylla began to move toward the overwintering places; when the average temperature was 0℃, few pear psylla were found in the orchard and basically entered the overwintering state; pear psylla mainly moved from the branch tip to the main stem and main branches for overwintering. The pesticides (sulphur mineral oil, sodium rosinate, lime sulfur mixture, bifenthrin and chlorpyrifos) and corrugated paper could repel the overwintering pear psylla, and sulphur mineral oil showed the highest repellent effects. The temperature of the overwintering place and the mortality of pear psylla could be increased through corrugated paper and black film method.
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Key words:
- Psylla chinesis /
- overwintering place /
- corrugated paper /
- sulphur mineral oil .
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