摘要
利用2010—2011年江西省有代表性的12个县(市)共34个观测点的双季早稻农业气象观测资料,采用频数分析方法,研究建立了江西省双季早稻长势观测定量指标。结果表明,在各主要生育期,不同苗情的早稻,其叶面积指数与单株干物质重量差异明显,可用于早稻长势的定量评价。产量分析表明,研究建立的双季早稻长势定量等级指标可用于实际。
Based on 2011—2012 agricultural meteorological observation data of double-cropping early rice from 34 observing points of 12 counties in Jiangxi province,this paper establishes a growth quantitative index by using frequency analysis method.The results indicate that in each main growth and development periods,the LAI(Leaf Area Index) and dry matter weight per plant are very different,and they can be used to quantitatively evaluate the double-cropping growth of early rice.The output analysis shows that the index established in this paper can be used in practical.
出处
《气象与减灾研究》
2012年第2期57-60,共4页
Meteorology and Disaster Reduction Research
基金
公益性行业(气象)科研专项(编号:GYHY200906022)
关键词
早稻长势
定量
等级指标
频数分析
Early rice growth
Quantification
Grading index
Frequency analysis
