安徽农业科学2012，Vol.40Issue(14)：8248-8249,2.
临江市无霜期变化规律及其对农业的影响
Change Laws of Frost-free Period and Its Impact on Agriculture in Linjiang
于文立 1杨琦1
作者信息
- 1. 吉林省临江市气象局,吉林临江134600
- 折叠
摘要
Abstract
Using the climatic statistics method,the climatic characteristics of first frost,last frost and frost-free period in Unjiang City from 1961 to 2010 were analzyed. The results showed that the first frost date of Linjiang City delayed obviously with a climatic trend rate of 2.43 d/10a; while the last frost date advanced with a climatic trend rate of only -2.16 d/ 10a. Under the influence of delayed first frost date,the frost-free period increased obviously with a climatic trend rate of 4.4 d/10a; the first frost,last frost and frost-free period of Linjiang City were characterized by obvious decadal features. Through mutation analysis,the frost-free period of Linjiang had obvious turning point. The adjustment of crop cultivars layout according to the length of frost-free period achieved remarkable economic benefits.关键词
初终霜日/无霜期/分布特征/线性趋势Key words
First and last frost date/ Frost-free period/ Distribution features/ Linear trend分类
农业科技引用本文复制引用
于文立,杨琦..临江市无霜期变化规律及其对农业的影响[J].安徽农业科学,2012,40(14):8248-8249,2.
