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文中针对传统的疫情控制效果计算公式 E F= 1 - ( T- T0)( ck - ck0) 和 E F= 1 - ( T×ck0)( ck0 × T0) 的缺欠,提出适用于多循环病害的新的疫情控制效果计算公式 E F= 1 - [( T- T0)(1 - ck) ck0][( ck - ck0)(1 - T) T0] 。此公式的优点是:在 ck0 ≠ T0 条件下也可应用,且计算结果具有唯一性。这一公式的应用条件是病害季节流行曲线适于用逻辑斯蒂模型描述。
Aiming at the shortcomings of the traditional formula for calculating the control effect of epidemic situation, E F = 1 - (T-T0) (ck - ck0) and E F = 1 - (T × ck0) (ck0 × T0) The new formula for controlling the effect of the outbreak is E F = 1 - [(T-T0) (1 - ck) ck0] [(ck - ck0) (1 - T) T0]. The advantage of this formula is that it can also be applied under the condition of ck0 ≠ T0, and the calculation result is unique. The application of this formula is that the seasonal epidemic curve of the disease season is suitable for description by the Logistic model.