光照對番茄生長影響的研究
番fan茄qie種zhong植zhi,是shi現xian在zai蔬shu菜cai商shang種zhong植zhi的de主zhu要yao蔬shu菜cai,每mei天tian都dou會hui有you大da批pi量liang的de番fan茄qie被bei市shi場chang需xu求qiu,因yin此ci,研yan究jiu番fan茄qie的de種zhong植zhi技ji巧qiao對dui於yu菜cai農nong有you很hen大da的de積ji極ji作zuo用yong,本ben文wen主zhu要yao介jie紹shao光guang照zhao對dui番fan茄qie生sheng長chang的de影ying響xiang,文wen章zhang涉she及ji光guang照zhao強qiang度du的de限xian定ding均jun采cai用yong光照室進行調節。
guangzhaoduiguanghezuoyongdeyingxiangzhuyaoshiguangzhaoqiangdudebianhua,zaiyidingfanweinei,guanghesulvsuizheguangzhaoqiangdudezengjiaertigao,jibenchengzhengxiangguan,danchaoguoyidingfanweizhihou,guanghesulvdezengjiajianman;當(dang)達(da)到(dao)某(mou)一(yi)光(guang)照(zhao)強(qiang)度(du)時(shi)光(guang)合(he)速(su)率(lv)不(bu)再(zai)增(zeng)加(jia)。在(zai)光(guang)飽(bao)和(he)點(dian)以(yi)下(xia)隨(sui)著(zhe)光(guang)照(zhao)強(qiang)度(du)減(jian)弱(ruo),植(zhi)物(wu)的(de)淨(jing)光(guang)合(he)速(su)率(lv)下(xia)降(jiang)。光(guang)照(zhao)強(qiang)度(du)不(bu)僅(jin)影(ying)響(xiang)植(zhi)物(wu)葉(ye)片(pian)中(zhong)葉(ye)綠(lv)素(su)的(de)含(han)量(liang),而(er)且(qie)還(hai)影(ying)響(xiang)植(zhi)物(wu)的(de)光(guang)合(he)速(su)率(lv)及(ji)呼(hu)吸(xi)速(su)率(lv),不(bu)同(tong)的(de)光(guang)照(zhao)強(qiang)度(du)對(dui)植(zhi)物(wu)的(de)光(guang)合(he)作(zuo)用(yong)會(hui)產(chan)生(sheng)不(bu)同(tong)的(de)影(ying)響(xiang),光(guang)強(qiang)過(guo)低(di)或(huo)過(guo)高(gao)都(dou)會(hui)抑(yi)製(zhi)植(zhi)物(wu)的(de)光(guang)合(he)作(zuo)用(yong)和(he)生(sheng)長(chang)發(fa)育(yu),進(jin)而(er)影(ying)響(xiang)植(zhi)物(wu)的(de)光(guang)合(he)能(neng)力(li)以(yi)及(ji)產(chan)量(liang)。弱(ruo)光(guang)條(tiao)件(jian)使(shi)甜(tian)瓜(gua)的(de)光(guang)補(bu)償(chang)點(dian)升(sheng)高(gao),使(shi)淨(jing)光(guang)合(he)速(su)率(lv)降(jiang)低(di),對(dui)光(guang)強(qiang)的(de)利(li)用(yong)範(fan)圍(wei)減(jian)小(xiao),光(guang)合(he)潛(qian)在(zai)能(neng)力(li)下(xia)降(jiang),對(dui)弱(ruo)光(guang)的(de)利(li)用(yong)率(lv)降(jiang)低(di)。目(mu)前(qian),有(you)關(guan)低(di)溫(wen)對(dui)番(fan)茄(qie)光(guang)合(he)特(te)性(xing)影(ying)響(xiang)的(de)研(yan)究(jiu)大(da)多(duo)集(ji)中(zhong)在(zai)中(zhong)、高gao光guang強qiang對dui番fan茄qie的de光guang抑yi製zhi作zuo用yong,關guan於yu溫wen度du和he光guang照zhao交jiao互hu作zuo用yong對dui番fan茄qie光guang合he特te性xing的de研yan究jiu也ye大da多duo集ji中zhong在zai低di溫wen弱ruo光guang的de控kong製zhi上shang。番fan茄qie是shi喜xi光guang性xing蔬shu菜cai,在zai一yi定ding的de光guang照zhao強qiang度du範fan圍wei內nei,光guang照zhao越yue強qiang,光guang合he作zuo用yong越yue旺wang盛sheng,光guang合he作zuo用yong的de最zui適shi溫wen度du為wei20℃~25℃,而呼吸作用的最適溫度為36℃~40℃,dangwenduchaoguoguanghezuoyongdezuishiwenduhou,guanghezuoyongjianruoerhuxiqiangduquezaizengqiang,jiangyingxiangfanqieguoshiyoujiwudejilei,yinci,chaoguoguanghezuoyongzuishiwendudehuanjingtiaojianbuliyufanqiedeshengchangfayu。guanyugaowenjiangdizhiwuyepianguanghezuoyongyiyouyixiebaodao。zhangjiedengyanjiubiaoming,fanqiedeguanghezuoyongzaiyidingwendufanweisuizhehuanjingwendudeshenggaoerzengqiang,danzaigaowenhuanjingzhongguanghezuoyonghuishoudaoyizhi。guanghezuoyongshenglizhibiaozhijiangongtongzuoyongyingxiangzhiwuguanghezuoyongdaxiao,youyanjiubiaomingzaihuanjingyinzizuoyongxiaguanghegeshenglizhibiaozaibutongqingkuangxiaduiguanghezuoyongdeyingxiangbutong,benshiyanjieguoxianshi:番茄結果期4個不同生理時期的光合作用表現不一致,溫室番茄結果初期、轉色期在溫室內自然溫度增加3~5℃(約27±2℃),並且光照強度增加5000L(X約30000LxX)處理下番茄葉片光合作用最強;而果實膨大期在溫室內自然溫度增加 6~8℃(約30±2℃),並且在溫室內自然光照處理下番茄葉片光合作用最強;在近成熟期在溫室內自然溫度,並且光照強度增加5000Lx(約 30000LX)處理下番茄葉片光合作用最強。
可ke見jian,在zai番fan茄qie結jie果guo期qi對dui環huan境jing因yin子zi的de要yao求qiu略lve有you不bu同tong,在zai果guo實shi發fa育yu過guo程cheng中zhong適shi宜yi的de溫wen度du和he光guang照zhao對dui果guo實shi發fa育yu有you利li,在zai果guo實shi臨lin近jin成cheng熟shu時shi對dui光guang照zhao要yao求qiu較jiao高gao。



