chlorophyll meter

基本解释

The SPAD-502 chlorophyll meter appears promising for rapid, on-farm analysis of crop nitrogen status.
葉綠素儀（SPAD-502）的出現使通過無損傷的田間速測對作物進行氮營養診斷成爲可能。
Chlorophyll meter SPAD-502 should be used broadly in forestry research because of its convenience to carry, simple and rapid measurement, and no damage to leaves.
由於葉綠素計SPAD-502攜帶方便、測定簡便、迅速，且不損壞葉片，應在林業研究中積極推廣使用。
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The field experiments were conducted for two consecutive growth seasons using SPAD-502 chlorophyll meter to quantitate the maturity of fresh flue-cured tobacco leaf.
利用SPAD-502葉綠素計進行了連續兩年的田間試騐，研究了烤菸鮮菸葉的成熟度量化判別。