测定冬小麦基茎组织液硝酸盐浓度测定氮素状况

IF 1.7 4区农林科学 Q2 AGRONOMY

Acta Agriculturae Scandinavica Section B-Soil and Plant Science Pub Date : 1999-06-01 DOI:10.1080/09064719950135588

B. Hoel

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引用次数: 9

摘要

本研究旨在建立一种快速测定冬小麦基部茎组织液中硝酸盐含量的方法，以预测小麦氮素状况。采用Merckoquant试纸条和Nitracheck仪测定了1993- 1996年挪威东南部11个年度大田试验中冬小麦Zadoks生育期GS 31和GS 49植株茎组织液中硝酸盐的含量。在单个试验中，NO3 -浓度与最终产率之间的关系良好，但当将所有试验的结果汇总时，NO3 -浓度不能很好地预测最终产率。本研究表明，在春季单施氮肥的情况下，为保证面包烘焙品质所需的足够谷物蛋白质含量，植物茎液中所需的临界硝酸盐值为硝态氮(NO3 -)在GS 31和GS 49下分别为4000 ppm和2000 ppm。在分开施氮的情况下(除春季施氮外，GS 31下施25 kg N ha-1, GS 49下施25 kg N ha-1)， 1000和500…

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Determination of Nitrogen Status in Winter Wheat by Measuring Basal Stem Tissue Sap Nitrate Concentration

The aim of this study was to assess a quick-test method determining nitrate in basal stem tissue sap for the prediction of nitrogen status in winter wheat (Triticum aestivum L.). The nitrate content in plant stem tissue sap collected at Zadoks growth stages GS 31 and GS 49 of winter wheat in 11 annual field trials in south-east Norway in the years 1993-96 was measured with Merckoquant test strips with a Nitracheck Meter. Relationships between NO3 - concentrations and final yields were good within individual trials, but when the results from all trials were pooled, the NO3 - concentration was a poor predictor of final yields. This study suggests that the critical nitrate values required in plant stem sap for sufficient grain protein content for bread-baking quality are 4000 ppm NO3 - at GS 31 and 2000 ppm at GS 49 in situations with a single N application in the spring. In situations with split N applications (25 kg N ha-1 at GS 31 and 25 kg N ha-1 at GS 49 in addition to spring application), 1000 and 500 ...

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来源期刊

Acta Agriculturae Scandinavica Section B-Soil and Plant Science 农林科学-农艺学

CiteScore

4.40

自引率

0.00%

发文量

审稿时长

2.3 months

期刊介绍： Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with: Climate smart and sustainable crop production systems Water and nutrient efficiency Soil conservation and productivity Precise agriculture systems Applications of bio- and nanotechnology Digitalisation and robotics Soil-plant interactions Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .