Analysis of Precipitation during Growth Period of Summer Soybean in Suixi County(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

2012年05期

Page:

766-770

Research Field:

Publishing date:

Info

Title:

Analysis of Precipitation during Growth Period of Summer Soybean in Suixi County

Author(s):

ZHANG Huai-nian¹; 2; ZHOU Jing-chun²; WANG Zhi-gang²

1.College of Atmospheric Science，Nanjing University，Nanjing 210093，Jiangsu；

2.Meteorology Bureau of Suixi County，Suixi 235100,Anhui,China

Keywords:

Precipitation; Rain days; Periodic variation; Summer soybean growth period; Suixi County

PACS:

S565.1

DOI:

10.3969/j.issn.1000-9841.2012.05.016

Abstract:

The precipitation and rainy days form mid June to late September of Suixi County in 1961-2010 were used to analyze the evolution and mutation characteristics of precipitation during summer soybean growth period by curvilinear regression and analysis of variance extrapolation method and wavelet analysis method,to provide reference for disaster warning and prevention.The results showed that precipitation during summer soybean growth period generally had a slight downward trend,but did not reach the significant level,the average precipitation and rainy season changed like the parabola.The main changing period of the whole growing period precipitation and rainy days were 5 and 14 years,respectively.The main changing cycle of precipitation in sowing,seedling,flowering and seed-filling were 11,8,11 and 7 years and rainy days were 19,12,23 and 5 years,respectively.Based on the main changing cycle and the data of past 40-46 years,we predicted the precipitation of whlole growth period and the rainy days of seed-filling stage in 2001-2011 years,and the accuracy rates were 63.6% and 54.5% respectively.

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