|Table of Contents|

Effect of Acid Rain on Soybean Yield in Huaibei District of Jiangsu(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2016年02期
Page:
251-256
Research Field:
Publishing date:

Info

Title:
Effect of Acid Rain on Soybean Yield in Huaibei District of Jiangsu
Author(s):
ZHANG Guo-zheng1;  WU Hong-yan2;  HE Xiao-hong1;  WANG Wei-li2;  PU Mei-juan2;  YU De-yue1
1. Soybean Research Institute/National Center for Soybean Improvement/State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China;?
2. Jiangsu Provincial Meteorological Bureau, Nanjing 210008, China
Keywords:
Soybean;  Acid rain;  Huaibei district;  Expected yield;  Loss rate
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2016.02.0251
Abstract:
Based on the observation data of acid rain and soybean yield data during the period of 1992 to 2013 in Jiangsu province, we analyzed the effect of acid rain on the soybean yield in the areas north of the Huaihe river Firstly, the temporal and spatial distribution characters of acid rain in growth period of soybean were analyzed.And the soybean loss rate suffering from acid rain was obtained by calculating the expected yields of soybean in acid rain years using Lagrange interpolation method. Then the most sensitive time affected by acid rain during soybean growth period was determined by analyzing the correlation between the loss rate and pH of precipitation during growth period and a yield loss model was constructed based on pH. Finally, the risk intensity index was determined on the basis of the acid rain disaster loss rate and the frequency of acid rain and this index was used to risk zoning in huaibei area.The results showed that the acid rain frequency in the growth period of soybean in Huaibei areas increased and there was a downward trend year by year since 2007.The pH of precipitation in the growth period were less than 5.6 in all areas except Huaian city.After 2000, the precipitation pH in soybean growth period of Xuzhou and Huaian city continued to decline and began to rise since 2009.The average damage rate of soybean affected by acid rain was between 8%-20% in huaibei area and this rate in Huaian was higher than that in Xuzhou. The precipitation pH of soybean growth period before the maturity had a significant nonlinear negative correlation with yield damage rate, that is, the loss rate of the damage rate decreased with the increasing of pH in the growth period especially in the flowering and seeding stage. Guanyun, Guannan and Suining county were the high risk area where the acid rain had greater effect on soybean growth. Xuzhou, Sihong and Huaian belonged to low risk areas, and other areas were the middle risk areas.

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Last Update: 2016-04-04