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1)  Leaf chlorophyll meter (SPAD-502)
叶绿素计(SPAD)
2)  chlorophyll meter
叶绿素计SPAD
1.
Application of chlorophyll meter SPAD-502 in diagnosis of nitrogen status and nitrogenous fertilizer in rice;
叶绿素计(SPAD)-502在水稻氮素营养诊断中的应用
3)  SPAD-502 chlorophyll-meter
SPAD-502型叶绿素计
4)  chlorophyll SPAD value
叶绿素SPAD值
1.
Field experiment was conducted to study the effect of 17-year long-term mixed application of organic-inorganic fertilizations on chlorophyll SPAD value of the flag leaves,the top 2nd leaves and the top 3rd leaves of early rice in early-tilling,peak-tilling,full-heading,milk ripe,waxy-ripening and ripening stage.
结果表明,与NPK处理相比,有机-无机肥配施分别使早稻分蘖始期和分蘖盛期倒二叶叶绿素SPAD值提高1。
5)  SPAD chlorophyll meter
SPAD叶绿素仪
1.
The effects of different soil N supply on SPAD chlorophyll meter readings and plant sap nitrate concentration were studied for winter at shooting stage.
通过研究不同土壤氮素供应对冬小麦拔节期叶绿素仪SPAD读数和植株硝酸盐浓度的影响,以及两种方法在冬小麦拔节期与土壤Nmin、植株全氮和吸氮量的关系,比较了SPAD叶绿素仪和植株硝酸盐测试两种氮素营养诊断方法的准确性。
6)  SPAD-502 chlorophyll meter
SPAD-502叶绿素仪
1.
The field experiment was tested to investigate the relationship between chlorophyll content in leaves of flue-cured tobacco and the value measured by SPAD-502 chlorophyll meter to discuss the application prospect of SPAD-502 chlorophyll meter in tobacco production.
采用田间试验的方法,研究了SPAD-502叶绿素仪与烤烟叶绿素含量的关系,探讨SPAD-502叶绿素仪在烤烟生产中的应用前景。
补充资料:压力计式温度计
分子式:
分子量:
CAS号:

性质:根据工作物质的体积或压力随着温度变化的性质而制成的一类温度计。可以分为液体式、气体式和蒸气式三种类型。主要是由温包、毛细管和弹簧管组成一个密封系统。系统内充以工作物质(一般液体式是充以水银,气体式是充以氮气,蒸气式是充以氯甲烷等)。测量时温包插于被测介质中,当温度变化时,温包内工作物质的压力发生变化,压力经毛细管传给弹簧管使其变形来表示温度。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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