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.

引用

页码：511 / 515

页数：5