CAJ | 학술논문

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800 μmol/(m~2·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.
이'취관'리위시재,이로지재배위대조,연구대붕재배대리광합특성적영향.결과표명:대붕재배대'취관'리적광합특성무현저영향,동일시간측정여대조적정광합속솔(Pn)차이계불동협령차이조성.협편광 '향응곡선여대조기본일치.광포화점균위800 μmol/(m~2·s)좌우.대붕촉성재배기간,Pn화증등속솔(Tr)적일변화균위단봉곡선,Pn여협온(Tleaf)정현저정상관,여공기상대습도(RH)정현저부상관.보온여강습시대붕리재배촉성기간배경조공적2개중요방면,제고화연장수체정체광합능력시대붕리재배적중요기술수단.
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 correvtion 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.