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### 气象因素与早稻产量因子的相关性分析

1. 湖南农业大学 农学院, 长沙 410128
• 收稿日期:2010-03-05 修回日期:2010-07-16 出版日期:2010-10-20 发布日期:2010-10-20
• 作者简介:罗丽华(1969- ),女,湖南浏阳人,高级实验师,主要从事作物信息研究。
• 基金资助:

国家公益性行业科研专项(200803028);湖南省重大科技专项(20082011);湖南省自然科学基金项目(08JJ1003)

### Correlation Analysis of Yield Components and Agro-meteorology of Early Rice

LUO Li-hua, CHEN Gui-hua, HU Ying, HUANG Huang, XIAO Ying-hui

1. Agricultural College, Hunan Agricultural University, Changsha 410128, China
• Received:2010-03-05 Revised:2010-07-16 Online:2010-10-20 Published:2010-10-20

Abstract: The purpose of this study is to reveal the effects of the main meteorological factors on the yield components of the early rice in Hunan Province. The correlation analysis between meteorological factors and rice yield components were conducted, with the data from 2003-2009 at 7 rice growth areas in Hunan Province. The main results are as follows: the tiller number was positively correlated to the daily average temperature (DAT), daily maximum temperature (DMAT), hours of sunshine (HS) during the 23rd-27th days after rice transplanting, and negatively correlated to the relative humidity (RH) during the same stage. The DAT, DMAT, daily minimum temperature (DMIT) and HS during the 33rd to 41st days after rice transplanting were positively correlated to the productive tiller percentage of early rice. The DAT averaged from the 9th-1st days, DMAT averaged from the 9th-4th days and HS averaged from the 10th-5th before initial heading were positively correlated to the grain number per panicle (GNPP), whereas the RH during this period was negatively correlated to the GNPP. The DAT and DMIT averaged from the 14th-9th days were positively correlated to the seed setting percentage (SSP), contrarily, the DMAT average from the 9th-5th days and the HS from the 9th-5th days before initial heading were negatively correlated to the SSP. The 1000-grain-weight was positively correlated to both of the RH average from the 25th-20th days before initial heading and the HS from the 14th-20th days after initial heading, and it was negatively correlated to the DAT of the 25th-20th days before initial heading and the DMIT of the 17th-22nd days after initial heading.

• S162.5+3