光合儀是競道光(guang)(guang)(guang)電生(sheng)(sheng)產的(de)專門用(yong)(yong)(yong)于(yu)檢(jian)測(ce)植(zhi)物(wu)進行光(guang)(guang)(guang)合(he)作(zuo)(zuo)用(yong)(yong)(yong)的(de)儀(yi)器(qi)，儀(yi)器(qi)體(ti)積小，重(zhong)量(liang)輕，可實(shi)現(xian)單人操作(zuo)(zuo)，比較輕松方便(bian)快速(su)的(de)完成(cheng)光(guang)(guang)(guang)合(he)作(zuo)(zuo)用(yong)(yong)(yong)的(de)測(ce)定(ding)和數據(ju)(ju)采集，主要(yao)(yao)還(huan)是由于(yu)光(guang)(guang)(guang)合(he)作(zuo)(zuo)用(yong)(yong)(yong)的(de)高靈(ling)敏性，環境中的(de)任何(he)一點要(yao)(yao)素(su)發生(sheng)(sheng)變化，光(guang)(guang)(guang)合(he)作(zuo)(zuo)用(yong)(yong)(yong)的(de)結果就(jiu)會產生(sheng)(sheng)很大(da)的(de)不同，所以必須要(yao)(yao)保證相對條件穩定(ding)，測(ce)定(ding)的(de)數據(ju)(ju)才(cai)能有參(can)考(kao)價值。其中葉綠素(su)就(jiu)是進行光(guang)(guang)(guang)合(he)作(zuo)(zuo)用(yong)(yong)(yong)過(guo)程中一個非常重(zhong)要(yao)(yao)的(de)參(can)與(yu)者(zhe)，也是植(zhi)物(wu)進行光(guang)(guang)(guang)合(he)作(zuo)(zuo)用(yong)(yong)(yong)的(de)必要(yao)(yao)條件。

　　葉綠(lv)(lv)體是(shi)植(zhi)物(wu)(wu)(wu)細(xi)(xi)胞(bao)中(zhong)(zhong)具(ju)有的(de)(de)能(neng)(neng)量(liang)轉(zhuan)換(huan)(huan)(huan)細(xi)(xi)胞(bao)，其能(neng)(neng)夠進行光(guang)(guang)(guang)(guang)合(he)作(zuo)用(yong)，也是(shi)植(zhi)物(wu)(wu)(wu)細(xi)(xi)胞(bao)進行光(guang)(guang)(guang)(guang)合(he)作(zuo)用(yong)的(de)(de)場所。光(guang)(guang)(guang)(guang)合(he)作(zuo)用(yong)是(shi)綠(lv)(lv)色植(zhi)物(wu)(wu)(wu)使用(yong)葉綠(lv)(lv)素等光(guang)(guang)(guang)(guang)合(he)色素與(yu)一些細(xi)(xi)菌(jun)，使用(yong)細(xi)(xi)胞(bao)本 身(shen)，在(zai)可見光(guang)(guang)(guang)(guang)的(de)(de)照射(she)之(zhi)下，把(ba)二氧(yang)化碳與(yu)水轉(zhuan)換(huan)(huan)(huan)成(cheng)(cheng)(cheng)儲存能(neng)(neng)量(liang)的(de)(de)有機物(wu)(wu)(wu)，并(bing)放(fang)出氧(yang)氣(qi)的(de)(de)生化過(guo)程，同時(shi)也是(shi)把(ba)光(guang)(guang)(guang)(guang)能(neng)(neng)轉(zhuan)換(huan)(huan)(huan)成(cheng)(cheng)(cheng)有機物(wu)(wu)(wu)中(zhong)(zhong)化學(xue)(xue)能(neng)(neng)的(de)(de)過(guo)程。植(zhi)物(wu)(wu)(wu)在(zai)進行光(guang)(guang)(guang)(guang)合(he)作(zuo)用(yong)的(de)(de)時(shi)候，在(zai)這個過(guo)程中(zhong)(zhong)的(de)(de)光(guang)(guang)(guang)(guang)反應階段(duan)通常是(shi)使用(yong)了(le)色素對光(guang)(guang)(guang)(guang)進行吸收，讓部分處在(zai)特殊狀(zhuang)態中(zhong)(zhong)的(de)(de)葉綠(lv)(lv)素a分子(zi)得到(dao)了(le)激發，在(zai)這個過(guo)程中(zhong)(zhong)就釋(shi)放(fang)出了(le)高能(neng)(neng)電(dian)(dian)(dian)子(zi)，并(bing)且在(zai)水中(zhong)(zhong)獲得電(dian)(dian)(dian)子(zi)而恢復到(dao)原始狀(zhuang)態。在(zai)光(guang)(guang)(guang)(guang)照射(she)的(de)(de)情況下，部分處在(zai)特殊狀(zhuang)態的(de)(de) 葉綠(lv)(lv)a會(hui)逐漸的(de)(de)失(shi)去電(dian)(dian)(dian)子(zi)與(yu)獲取電(dian)(dian)(dian)子(zi)，這樣(yang)就形(xing)成(cheng)(cheng)(cheng)了(le)電(dian)(dian)(dian)子(zi)流，把(ba)光(guang)(guang)(guang)(guang)能(neng)(neng)夠轉(zhuan)換(huan)(huan)(huan)成(cheng)(cheng)(cheng)電(dian)(dian)(dian)能(neng)(neng)，之(zhi)后形(xing)成(cheng)(cheng)(cheng)ATP與(yu)NADPH。把(ba)電(dian)(dian)(dian)能(neng)(neng)轉(zhuan)換(huan)(huan)(huan)成(cheng)(cheng)(cheng)為活躍(yue)化 能(neng)(neng) 。總(zong)之(zhi)一句話就是(shi)把(ba)光(guang)(guang)(guang)(guang)能(neng)(neng)轉(zhuan)換(huan)(huan)(huan)成(cheng)(cheng)(cheng)電(dian)(dian)(dian)能(neng)(neng)，再(zai)轉(zhuan)換(huan)(huan)(huan)成(cheng)(cheng)(cheng)活躍(yue)化學(xue)(xue)能(neng)(neng)， 然后形(xing)成(cheng)(cheng)(cheng)穩定(ding)化學(xue)(xue)能(neng)(neng)。

　　JD-GH10光(guang)(guang)合儀采用(yong)(yong)(yong)閉(bi)路測(ce)量(liang)方法可以(yi)測(ce)定氣體CO2濃(nong)度(du)(du)、空氣溫濕度(du)(du)，植物(wu)葉片溫度(du)(du)，光(guang)(guang)強，氣體流(liu)量(liang)等(deng)要素，并計算出植物(wu)的(de)光(guang)(guang)合速率、蒸騰速率、細胞(bao)間CO2濃(nong)度(du)(du)、氣孔導度(du)(du)、水分(fen)利用(yong)(yong)(yong)率等(deng)光(guang)(guang)合作用(yong)(yong)(yong)指標，在生物(wu)、農學、園藝、林業(ye)、昆(kun)蟲、微生物(wu)、動(dong)物(wu)等(deng)許多專業(ye)的(de)實驗課程中有廣(guang)泛的(de)利用(yong)(yong)(yong)前景。

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