大棚栽培对‘翠冠’梨光合特性的影响  

Effects of plastic greenhouse cultivation on photosynthetic characteristics of 'Cuiguan' pear

作　　者：王涛[1] 胡美君[2,3] 郑洁[2] 柴明良[2] 蔡美艳[1] 

机构地区：[1]温岭市农业林业局,浙江温岭317500 [2]浙江大学农业与生物技术学院园艺系,浙江杭州310029 [3]永康市林业技术推广中心,浙江永康321300

出　　处：《浙江农业学报》2010年第1期40-44,共5页Acta Agriculturae Zhejiangensis

基　　金：现代农业产业(梨)产业技术体系建设专项资金资助;浙江省农业成果转化项目(2009D70094)

摘　　要：以‘翠冠’梨为试材,以露地栽培为对照,研究大棚栽培对梨光合特性的影响。结果表明:大棚栽培对‘翠冠’梨的光合特性无显著影响,同一时间测定与对照的净光合速率(Pn)差异系不同叶龄差异造成。叶片光响应曲线与对照基本一致,光饱和点均为800μmol/(m2.s)左右。大棚促成栽培期间,Pn和蒸腾速率(Tr)的日变化均为单峰曲线,Pn与叶温(Tleaf)呈显著正相关,与空气相对湿度(RH)呈显著负相关。保温与降湿是大棚梨栽培促成期间环境调控的2个重要方面,提高和延长树体整体光合能力是大棚梨栽培的重要技术手段。Effects of plastic greenhouse cultivation on photosynthetic characteristics of ＇Cuiguan＇ pear were studied. The results showed that there was no significant difference in photosynthetic characteristic of ＇Cuiguan＇ pear between the plastic greenhouse cultivation and open field cultivation,and the difference in net photosynthetic rate （Pn） measured at the same time between the two cultivation patterns was related to the leaf age. The light response curves were similar and the light saturation point was about 800 μmol·m^-2·s^-1 under the both cultivation patterns. The diurnal variations of Pn and transpiration rate（Tr） of the pear leaves showed single-peak curves. The significant positive correlation was found between Pn and leaf temperature（Tleaf） and the significant negative correction was observed between Pn and relative humidity（RH） during the developing growth phase under the plastic greenhouse cultivation. The two most important ways regulating pear growth and development inside plastic greenhouse were keeping warm and reducing the humidity. Furthermore,improving photosynthesis of the whole pear plant was an important technique under plastic greenhouse cultivation.

关 键 词：大棚栽培 '翠冠’ 梨 光合特性 

分 类 号：S661.2[农业科学—果树学]