终霜

新疆棉区10℃初日和终霜期的空间分布特征及其对棉花播种期的影响

Spatial Distribution of Beginning Date of 10 ℃ and Latest Frost and Their Impacts on the Cotton 's Seeding Time in Xinjiang

研究发现：一、长治地区初霜日和终霜日出现的早晚、无霜期长短的空间分布均与地理特征、海拔高度关系密切。

Conclusions are as follows : 1 . The date of the first and latest frost , the length of duration of frost-free period are close with geographical features and altitude .

春播幼苗主要受到特晚终霜冻的影响；

The abnormal last frost could affect seedling in spring .

运城市终霜冻预报方法

Forecast Method for End Frost in Yuncheng

试用逐步判别方法预测广西初、终霜趋势

Experimental Forecast Of Intial Frost And Final Frost Tendency In Guangxi By Using Step-by-step Discriminatory Method

基于时序残差辨识的终霜日灰预测模型研究

Grey Prediction Model Research of the Last Frost Date Based on Time Series Residual Error Identification

哈尔滨地区初、终霜冻日分布特点的研究

Study on the characteristics of the Distribution of the first and late frost dates in Harbin region

分析广西初、终霜日趋势变化，确定了初、终霜日早晚预报序列。

The initial frost and the final frost forecast series are determined based upon analysis of its trend changes .

利用模型对永宁地区1990～1992年的终霜日期进行了超长期预报。

Using the model , the date of the end frost day in 1990-1992 in Yongning area have been forcast-ed of superlong period .

再用逐步判别的方法筛选部分因子建立判别函数，预测广西初、终霜趋势。

The initial frost and final frost forecast is performed on partial factors determined by discriminatory function got up with step-by-step discriminatory method .

2008年4月18～21日，新疆北疆地区发生的终霜冻害对农业生产造成极大影响。

The late frost had a great influence on agriculture production in North Xinjiang from April 18 , 2008 to April 21 , 2008 .

各品种遭受终霜冻危害后的减产幅度有一定差异，主要与葡萄品种的结果习性和修剪方式密切有关。

There were some differences among varieties in rate of yield reduction , which mainly associated with different bearing habit and prunning method of different varieties .

在气候变暖的趋势下，连云港市春霜冻害呈提早结束、总体减轻趋势，但终霜日仍然可能偏晚出现；

With the expansion of the greenhouse effect , the spring frost in Lianyungang City had the tendency that ends earlier and damages less , while the last frost date may still occur later .

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；

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 .

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。

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 .