last frost

Features of First and Last Frost Event Occurrence and Its Influence on Agriculture over Northern Shanxi

山西北部初终霜冻日特征及其对农业的影响

Study on climatic features of unusual first and last frost in North China

华北异常初终霜冻气候特征的研究

The growing season is defined as the period between the last frost in spring and first frost in the fall.

生长季节的定义为：春天最后一次霜冻到秋天第一次霜冻之间这段时间。

When the unusual first or last frost appears, its lasting time of average values are 1. 0-3. 4 days and 1. 0-1. 3 days respectively.

当初，终霜冻出现异常后，其均值持续时间，分别为1.0～3.4天和1.0～1.3天；

According to frost index defined by the minimun temperature ≤ 0 ℃ of earth surface, the criterion for the unusual frost is quantitatively given and the climatic features of the unusual first or last frost in North China during 1953-1990 are studied.

本文利用1953～1990年地面最低温度资料，并以≤0℃作为霜冻指标，定量地确定出现异常霜冻判别标准，研究了华北地区初、终霜冻异常的气候特征。

We will plow the field soon after the last frost.

最后一场霜过后,我们将马上耕田.

They will plough the field s ( x) n after the last frost.

最后一次降霜后他们很快就会耕地了。