A QUICK TEST PROCEDURE FOR SOIL NITRATE-NITROGEN

被引：21
|
作者：
HARTZ, TK
机构：
[1] Department of Vegetable Crops, University of California, Davis
来源：
COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 1994年 / 25卷 / 5-6期
关键词：
D O I：
10.1080/00103629409369058
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
A procedure for extraction and measurement of nitrate-nitrogen (NO3-N) in soil is described. Extracting solution [0.025M Al2(SO4)3] and field-moist soil are measured volumetrically, with NO3-N concentration measured by nitrate-sensitive colorometric test strips or nitrate-selective electrode. Across a range of soil texture, moisture content, and NO3-N concentration, the procedure was well correlated with conventional laboratory analysis of 2N KCl soil extracts (r2 = 0.94). This quick test procedure is proposed as an on-farm monitoring technique to improve N management.
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页码：511 / 515
页数：5
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