大棚環境中哪些因素會影響作物的生長
目mu前qian,日ri光guang溫wen室shi和he大da棚peng蔬shu菜cai栽zai培pei技ji術shu廣guang泛fan應ying用yong於yu各ge個ge地di區qu,而er且qie也ye一yi直zhi在zai擴kuo大da。一yi方fang麵mian,溫wen室shi大da棚peng的de假jia設she為wei蔬shu菜cai栽zai培pei提ti供gong了le合he適shi的de環huan境jing,提ti高gao了le蔬shu菜cai的de品pin質zhi和he產chan能neng,而er另ling一yi方fang麵mian,由you於yu部bu分fen菜cai農nong對dui大da棚peng設she施shi蔬shu菜cai的de生sheng產chan不bu熟shu悉xi,造zao成cheng部bu分fen設she施shi內nei不bu良liang環huan境jing因yin素su增zeng加jia,影ying響xiang了le蔬shu菜cai的de生sheng長chang和he產chan品pin的de品pin質zhi,降jiang低di了le設she施shi蔬shu菜cai的de經jing濟ji效xiao益yi。溫wen室shi環huan境jing中zhong的de各ge項xiang參can數shu,會hui直zhi接jie影ying響xiang到dao作zuo物wu的de品pin質zhi以yi及ji產chan量liang,所suo以yi在zai溫wen室shi大da棚peng的de蔬shu菜cai栽zai培pei中zhong,通tong過guo研yan究jiu溫wen室shi環huan境jing中zhong的de各ge項xiang參can數shu對dui蔬shu菜cai的de影ying響xiang,有you助zhu於yu合he理li調tiao整zheng各ge參can數shu的de值zhi,從cong而er提ti高gao作zuo物wu的de品pin質zhi和he產chan量liang。
一般來說,如果溫室中溫度過高,那麼容易造成植株徒長,葉片大而薄、葉(ye)色(se)淺(qian)綠(lv),節(jie)間(jian)過(guo)長(chang),莖(jing)葉(ye)生(sheng)長(chang)過(guo)旺(wang)。而(er)低(di)溫(wen)同(tong)樣(yang)不(bu)利(li)於(yu)植(zhi)物(wu)的(de)生(sheng)長(chang)發(fa)育(yu),低(di)溫(wen)環(huan)境(jing)下(xia)會(hui)造(zao)成(cheng)植(zhi)株(zhu)生(sheng)長(chang)不(bu)良(liang),葉(ye)片(pian)較(jiao)小(xiao),節(jie)間(jian)過(guo)短(duan),易(yi)形(xing)成(cheng)花(hua)打(da)頂(ding)、落花落果現象。同時環境內的空氣濕度也會對作物生長造成影響,比如空氣濕度高不利於作物的生長,研究發現,設施內濕度達80%~90%時,影響光照,導致植株長勢弱,病害易暴發,產量低、品質劣。
當dang然ran空kong氣qi濕shi度du與yu土tu壤rang濕shi度du存cun在zai一yi定ding的de關guan係xi,而er土tu壤rang濕shi度du大da小xiao也ye會hui影ying響xiang作zuo物wu的de生sheng長chang情qing況kuang,具ju體ti為wei當dang土tu壤rang濕shi度du比bi較jiao大da時shi,植zhi株zhu在zai苗miao期qi或huo在zai定ding植zhi後hou產chan生sheng漚ou根gen,根gen部bu不bu發fa新xin根gen,幼you根gen表biao麵mian呈cheng鏽xiu褐he色se而er後hou腐fu爛lan,致zhi地di上shang部bu葉ye片pian變bian黃huang,嚴yan重zhong的de枯ku死si。另ling外wai由you於yu灌guan水shui後hou地di溫wen下xia降jiang,造zao成cheng植zhi株zhu根gen係xi吸xi收shou能neng力li減jian弱ruo,長chang期qi造zao成cheng植zhi株zhu生sheng長chang不bu良liang,產chan量liang較jiao低di。
所suo以yi在zai溫wen室shi蔬shu菜cai栽zai培pei中zhong,應ying該gai時shi刻ke注zhu意yi監jian測ce大da棚peng內nei環huan境jing的de溫wen度du,空kong氣qi濕shi度du,和he土tu壤rang的de濕shi度du大da小xiao,從cong而er將jiang它ta們men控kong製zhi在zai作zuo物wu生sheng長chang合he適shi的de環huan境jing,這zhe樣yang才cai能neng科ke學xue管guan理li,實shi現xian作zuo物wu品pin質zhi和he產chan量liang的de雙shuang豐feng收shou。中國糧油儀器網 http://www.98fo.cn/



