摘要
文章首先利用相关分析,研究影响中国棉花产量(包括黄河流域、长江流域和新疆三大棉区)的主要气象因子,找出能够综合评判棉花全生育期气象条件利弊的指标因子;然后,求出各指标因子的距平百分率,并对其进行标准化处理,把处理后的指标因子进行适当组合得到影响中国棉花产量丰歉的一级:二级气象指标。结果表明,利用这种气象指标在分析、判断棉花全生育期气象条件对产量影响的利弊方面,准确率可达95%以上。
Firstly,using correlation analysis, principal meteorological factors influencingbumper or poor harvest of cotton for whole country and three main cotton regions arestudied.Some comprehensive index factors which can be used to judge the advantagesand disadvantages of meteorological conditions during the whole growth period aregiven。 Then, by calculating departure percentages of all index and standardizing them,the first and second degrees of meteorological indecies for whole country are given。Finally,the comprehensive meteorological indecies are established.It is shown that theiraccuracv can reach more than 95%。
出处
《应用气象学报》
CSCD
北大核心
1995年第A01期96-101,共6页
Journal of Applied Meteorological Science
基金
国家自然科学基金
关键词
中国
棉花
产量
气象指标
China
Cotton yield
Bumper or poor harvest
Meteorological index.