zuizhongyaodeshi
，yingzhuyifangfengdezaowanduiguanghezuoyongdetiaojie。zaishucaidapengzhong，wanshanghuijileijiaoduodeeryanghuatan
，zhezhuyaoshiyouturangzhongdeyoujizhifenjieershifangchulaide

，yeyoushucaidehuxizuoyongerchanshengyibufen。因冬天傍晚大棚關閉，會使晚上棚中的二氧化碳積累到很高的濃度
，通常有機肥充足的棚可達1500毫克/升，甚至更高，這個濃度是空氣中二氧化碳的5倍(bei)。所(suo)以(yi)充(chong)分(fen)利(li)用(yong)棚(peng)中(zhong)的(de)這(zhe)些(xie)二(er)氧(yang)化(hua)碳(tan)供(gong)應(ying)光(guang)合(he)作(zuo)用(yong)的(de)需(xu)要(yao)，會(hui)使(shi)光(guang)合(he)產(chan)物(wu)數(shu)量(liang)大(da)幅(fu)度(du)提(ti)高(gao)，明(ming)顯(xian)增(zeng)加(jia)蔬(shu)菜(cai)產(chan)量(liang)。這(zhe)就(jiu)要(yao)求(qiu)菜(cai)農(nong)注(zhu)意(yi)不(bu)能(neng)過(guo)早(zao)地(di)放(fang)風(feng)，以(yi)免(mian)使(shi)棚(peng)中(zhong)的(de)這(zhe)些(xie)二(er)氧(yang)化(hua)碳(tan)逸(yi)出(chu)棚(peng)外(wai)
，白(bai)白(bai)跑(pao)掉(diao)。

kexueyanjiurenwei，lakaipengshangdecaoshanzihou，zailianghaodeguangzhaotiaojianxia，pengzhongjileiyiyedeeryanghuatan
，kegongpengzhongshucaiyixiaoshizuoyoudeguanghezuoyongdexuyao，suoyijishiwendutiaojianshiyifangfeng，zailakaipenghouyixiaoshizhineiyebuyaofangfeng

，fangfengjiushicuowude。guozaofangfenghuishibufeneryanghuatankuosandaopengwai，qishishijianshaoleguanghechanwudeshengchengliang，cainonggaidedaodechanliangmeidedao。