怎樣才能準確測量出葉片的SPAD值？
葉ye綠lv素su是shi植zhi物wu光guang合he作zuo用yong吸xi收shou和he傳chuan遞di能neng量liang的de重zhong要yao色se素su，葉ye綠lv素su含han量liang的de多duo少shao將jiang直zhi接jie決jue定ding光guang合he作zuo用yong的de強qiang弱ruo，從cong而er影ying響xiang作zuo物wu的de生sheng長chang發fa育yu。因yin此ci，葉ye綠lv素su的de測ce量liang成cheng了le植zhi物wu生sheng理li研yan究jiu過guo程cheng中zhong的de主zhu要yao項xiang目mu之zhi一yi。過guo去qu，研yan究jiu人ren員yuan通tong常chang利li用yong化hua學xue檢jian測ce來lai分fen析xi葉ye綠lv素su含han量liang，不bu僅jin耗hao時shi而er且qie容rong易yi對dui植zhi物wu葉ye片pian造zao成cheng損sun傷shang，破po壞huai原yuan有you的de生sheng理li結jie構gou。為wei了le解jie決jue這zhe一yi矛mao盾dun，有you企qi業ye專zhuan門men研yan發fa出chu了le便攜式葉綠素測定儀，用科學儀器取代化學試劑檢測就方便多了，效率是一方麵，主要還是測量精度有了更大的保證。
要想正確使用便攜式葉綠素測定儀，我們還得從它的工作原理說起。儀器主要通過主控模塊的GPIO接口發出控製信號控製穩流電路的工作狀態，同時主控模塊的另兩路GPIO分別控製兩個LEDgongzuozhuangtai，lianggeguangyuanhuishunjiantouguozhiwuyepian，zaiyouguiguangdianerjiguanfenbiejieshoulianggeguangyuandeguangxinhaobingzhuanhuanweidianliuxinhao，fangdahelvbodianlubaweiruodianliuxinhaozhuanhuanweidianyaxinhao，tongguozhukongmokuaidekuozhanjiekouwanchengguangqiangxinhaodecaiji，tongguoshedingdechengxuwanchengcaijixinhaozhuanhuanweiSPAD值。
zailejiewanbianxieshiyelvsucedingyidegongzuoyuanlihou，womenjiukeyianzhaoshiyongshuomingshulaijinxingcedingle。buguoxuyaozhuyideshi，shiyongqianyaoduiyiqijinxingxiaozhunchuli，zhiyoujingguoxiaozhunchulicainenggoubaozhengceliangjieguodezhunquexing。xiaozhunwanhou，zhixuyaojiangyepiancharubingheshangceliangtantoujike，buyongjianxiayepian，jiukeyizhunquecedingchuSPAD值。
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