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针对甘草胭脂蚧[Prophyrophora sophrae(Arch.)]不同发育阶段分别采取药剂施撒法、灌根法以及旋耕机旋耕土壤破坏卵囊越冬等措施分期进行防治。甘草胭脂蚧珠体田间防效结果表明,以25%噻虫嗪WG 83.3 mg/L浓度下防效最高,为73.66%;其次为浓度500 mg/L的40%毒死蜱EC和浓度为62.5 mg/L的25%噻虫嗪WG,每株灌根800mL的防效分别为69.86%和65.75%,对甘草胭脂蚧珠体具有较好的控制作用。甘草胭脂蚧成虫田间药效结果表明,以40%辛硫磷EC和40%毒死蜱EC防效较高,药后21 d,其防效分别为67.37%和64.53%,辛硫磷GR和毒死蜱GR相对较低。4月中旬和5月中旬分别调查发现,旋耕土壤处理区甘草胭脂蚧若虫(3.1头/株)和甘草胭脂蚧珠体(1.9头/株)显著少于对照区甘草胭脂蚧若虫(5.9头/株)和甘草胭脂蚧珠体(6.1头/株)。可见,旋耕土壤对甘草胭脂蚧有一定的防效。
Prophyrophora sophrae (Arch.)] Were treated by different methods at different developmental stages, such as the method of medicinal application, root-filling method and overwinter of oocysts damaged by rotary tillage in soil. The results of field control of Glycyrrhiza glabra pearl showed that the control effect was the highest with the concentration of 25% thiamethoxam WG 83.3 mg / L, which was 73.66%; followed by 40% chlorpyrifos EC with the concentration of 500 mg / L and the concentration of 62.5 mg / L of 25% thiamethoxam WG, rooting 800mL per plant control effect was 69.86% and 65.75%, on the licorice rouge ball beads have a better control. The results showed that the control effect of 40% phoxim EC and 40% EC was higher than that of the control, and the control effect was 67.37% and 64.53% respectively 21 d after treatment. Phoxim GR and chlorpyrifos GR relatively low. In mid-April and mid-May, respectively, it was found that the numbers of nymphs (3.1 heads / plant) and licorice (1.5 heads / plant) of licorice were significantly less than that of the control / Strain) and Glycyrrhiza glabra pearl (6.1 / strain). Can be seen, rotary tillering soil licorice carmine have some control effect.