• The developmental threshold was fixed at 26 of disease index based on the relative error margin analysis.

    根据损失量方程,病情很轻时损失甚微,相对误差法分析,将病情指数26定为该病发生指标。

    youdao

  • The developmental threshold and effective accumulative temperature of Obolodiplosis robiniae (Haldemann) , an important insect pest of Robinia pseudoacacia, were studied in the laboratory.

    实验室条件下对刺槐叶瘿蚊发育历期、发育起点温度有效积温进行了研究

    youdao

  • The developmental threshold and effective accumulative temperature of Obolodiplosis robiniae (Haldemann) , an important insect pest of Robinia pseudoacacia, were studied in the laboratory.

    实验室条件下对刺槐叶瘿蚊发育历期、发育起点温度有效积温进行了研究

    youdao

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