安徽农业大学学报2017，Vol.44Issue(3)：513-518,6.DOI:10.13610/j.cnki.1672-352x.20170524.021
我国梨产区灌溉水pH及矿质营养元素分析
Analysis of pH and mineral elements in the irrigation water in the pear-producing area in China
摘要
Abstract
In order to study the content of mineral elements in the irrigation water in the pear-producing area in China,78 irrigation water samples from 14 Experiment Stations of China Pear Research System (ESCPRS) were collected.The pH,NH4+,NO2-,NO3-,PO43-,K+,Ca2+,Mg2+,SO42-,Fe,Mn,Cu,Zn and B of these samples were measured,and pH distribution and correlation between mineral elements were analyzed.The results showed that the average pH value of the irrigation water was 7.74,and the alkaline water with pH value above 7.5 accounted for 75.64％ of the selected samples.According to the regulations of GB5084-2005 on the water quality of farmland irrigation,four samples did not meet pH requirement;in selective-control projects,five samples did not meet B requirement.The pH value was significantly negatively correlated with Cu.The NO3-and Ca2+;the K+ and Ca2+,Mg2+,SO42-;the Ca2+ and Mg2+,SO42-;the Mg2+ and SO42-in the irrigation water all had a highly significantly positive correlation.关键词
梨/灌溉水/pH/矿质元素Key words
pear/irrigation water/pH/mineral nutrient分类
农业科技引用本文复制引用
余兴,汤婷婷,丁伟,贾兵,朱立武..我国梨产区灌溉水pH及矿质营养元素分析[J].安徽农业大学学报,2017,44(3):513-518,6.基金项目
国家现代农业(梨)产业技术体系建设资金(CARS-29-14)资助. （梨）
