The Use of a Portable Non-Destructive Type Nitrogen Meter for Leaves of Woody Plants in Field Studies
The Use of a Portable Non-Destructive Type Nitrogen Meter for Leaves of Woody Plants in Field Studies
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便携式无损式木本植物叶片测氮仪在田间研究中的应用
DOI：
10.1023/a:1021362127882
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发表时间：
2002
期刊：
影响因子：
2.7
通讯作者：
T. Koike
中科院分区：
文献类型：
--
作者：
T. Ichie;Y. Kitahashi;S. Matsuki;Y. Maruyama;T. Koike
对便携式无损型氮肥计（Agriexpert PPW-3000）的实用性进行了试验。研究了叶片氮和叶绿素（Chl）含量与ppw -3000和SPAD-502测量值之间的潜在关系。ppw -3000与同一叶片N含量呈极显著正相关，而叶片Chl含量与ppw -3000含量呈不显著正相关。同样，实际Chl含量与espad -502读数之间存在显著的正相关，而实际N含量与espad -502读数之间存在较小的正相关。因此，使用ppw -3000和spad -502可以在田间简单、无损地测定叶片N和Chl含量。
The practicality of the portable, non-destructive type nitrogen meter (Agriexpert PPW-3000) was tested on ten forest species. Also investigated was the potential relationship between leaf nitrogen and chlorophyll (Chl) contents and the readings taken with thePPW-3000and a Chl meter (SPAD-502). There was a significantly positive correlation between the readings ofPPW-3000and N content in the same leaves, whereas the correlation between leaf Chl content and thePPW-3000values was less positive. Similarly there was a significant positive correlation between actual Chl content and theSPAD-502readings and the less positive correlation between actual N content and theSPAD-502readings. Thus using both thePPW-3000andSPAD-502enables to determine leaf N and Chl contents simply and non-destructively in the field.