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通过室内 5种恒温和自然变温对卵形异绒螨卵的发育起点温度测定 ,结果表明 ,卵形异绒螨卵的发育历期随着环境温度的升高而缩短 ;发育起点温度恒温处理下为(8.797± 0 .750 )℃ ,自然变温处理下为 (6.1 49± 2 .986)℃ ;利用王如松模型计算最低临界发育温度为 1 0 .351℃。与麦蚜各龄期比较 ,认为该螨发育起点温度高于麦蚜 ,因之在发生时间上已错过了对麦蚜有利的控制时期。
Through the five indoor constant temperature and natural temperature on the ovipositor mite egg development threshold temperature, the results showed that the ovipositor mite egg development period with the increase of ambient temperature and shorten the development of starting point temperature under constant temperature (8.797 ± 0.750) ℃, and the temperature under natural temperature change was (6.149 ± 2.986) ℃. The minimum critical temperature was calculated as 1.0351 ℃ by Wang Rusong model. Compared with wheat aphids in different stages, it is considered that the onset temperature of the mite is higher than that of the wheat aphid, and thus the control period favorable to the wheat aphid has been missed in the time of occurrence.