在zai大da棚peng蔬shu菜cai生sheng產chan中zhong,菜cai農nong在zai棚peng內nei懸xuan掛gua溫wen度du計ji很hen隨sui意yi,有you的de將jiang溫wen度du計ji掛gua在zai了le大da棚peng通tong風feng口kou下xia或huo後hou牆qiang上shang,有you的de在zai蔬shu菜cai剛gang定ding植zhi時shi,把ba溫wen度du計ji掛gua在zai距ju離li蔬shu菜cai生sheng長chang點dian1米mi多duo處chu。溫wen度du計ji掛gua在zai通tong風feng口kou下xia,一yi旦dan通tong風feng,外wai界jie的de冷leng空kong氣qi進jin入ru棚peng內nei,通tong風feng口kou下xia的de溫wen度du快kuai速su降jiang低di,如ru果guo按an照zhao其qi顯xian示shi溫wen度du調tiao整zheng通tong風feng口kou,必bi然ran導dao致zhi棚peng內nei溫wen度du偏pian高gao,影ying響xiang蔬shu菜cai正zheng常chang生sheng長chang。溫wen度du計ji掛gua在zai大da棚peng後hou牆qiang上shang,也ye不bu能neng準zhun確que反fan映ying棚peng內nei的de溫wen度du,不bu能neng以yi此ci為wei依yi據ju調tiao整zheng溫wen度du。溫wen度du計ji掛gua在zai距ju離li蔬shu菜cai生sheng長chang點dian1米多處,高處溫度偏高,也難以準確反映蔬菜生長點附近的溫度情況。
因此,溫度計較佳的懸掛位置:棚室中部,距離通風口、門口、牆體等都較遠,距離蔬菜生長點10厘li米mi左zuo右you。這zhe樣yang才cai能neng更geng準zhun確que地di反fan映ying蔬shu菜cai生sheng長chang位wei置zhi的de溫wen度du。另ling外wai,應ying在zai棚peng中zhong懸xuan掛gua多duo支zhi溫wen度du計ji,測ce出chu溫wen度du後hou,取qu其qi平ping均jun值zhi,這zhe樣yang才cai能neng減jian小xiao誤wu差cha,保bao證zheng管guan理li措cuo施shi不bu出chu現xian失shi誤wu。
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