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汤普森被毛孢对二斑叶螨致死率的建模分析
Using mathematical modeling to analyze the mortality of Tetranychus urticae infested by Hirsutella thompsonii
韩智杰1,瞿娇娇1,张晓娜2,郭建军2,邹晓1**
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DOI:
作者单位:1.贵州大学真菌资源研究所贵阳550025;2.贵州大学昆虫研究所贵阳550025
中文关键词:汤普森被毛孢,二斑叶螨,温湿度,孢子浓度,致死率,数学模型
英文关键词:Hirsutella thompsonii, Tetranychus urticae, temperature and humidity, concentration of spore, mortality, mathematical model
中文摘要:

本文采用蒸汽压提供湿度的方法研究了在施用不同浓度的孢子悬液及不同温湿度下汤普森被毛孢对二斑叶螨Tetranychus urticae Koch的致死

情况,并用灰色预测和回归分析建立了数学模型。结果表明:试验条件范围内,完全二次方程的拟合效果较好;在温度为2809℃、湿度为

100%、浓度为250万个/mL时,致死率达到8166%,防效最佳;较湿度而言,温度对被毛孢的影响更为显著;在高浓度或高湿度下,被毛孢对

环境的变化更为敏感。综合评价,汤普森被毛孢对二斑叶螨的防效欠佳,若欲推广,尚需进一步的改良。

英文摘要:

The efficiency of controlling Tetranychus urticae  Koch with the pathogen Hirsutella thompsonii Fisher under various

humidity and temperature conditions was investigated and Grey model prediction and regression analysis were used to

construct a mathematical model of the effects of various parameters on mite mortality. The results indicate that the model

was a perfect fit under the test conditions. Control was most effective at a temperature, humidity and pathogen

concentration of 28.09℃, 100% and 2.5 million/mL, respectively, with a death rate of up to 81.66%. The influence of

temperature on H. thompsonii was found to be greater than that of humidity. H. thompsonii was found to be more sensitive to

changes in the environment at high temperature and humidity. It is concluded that the control efficiency of T. urticae by H.

thompsonii is not high and would need to be improved if H. thompsonii is to be used as a biocontrol agent.

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