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大棚栽培对翠冠梨光合特性的影响  

2009-02-19 21:45:49|  分类: 论文论著 |  标签: |举报 |字号 订阅

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浙江农业学报,2010,22(1):40-44 

王 涛1,胡美君2,3,郑 洁2,柴明良2,蔡美艳1

(1温岭市农业林业局,浙江温岭,317500;2浙江大学园艺系,浙江杭州,310029;3永康市林业技术推广中心,浙江永康,321300)

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800 mmol·m-2·s-1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式变化,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。

关键词:大棚栽培;翠冠;梨;光合特性

 

The effects of plastic film house planting on photosynthetic characteristics of ‘Cuiguan’ pear

WANG Tao1  HU MEI-jun2,3  ZHENG Jie 2  CHAI Ming-liang 2  CAI Mei-yan1

(1 Wenling Agriculture and Forestry Bureau of Zhejiang, Wenling, 317500, China; 2 Department of Horticulture, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, China; 3 Yongkang Forestry Extension Center of Zhejiang, Yongkang, 321300, China)

Abstract: To study the effects of plastic film house planting on photosynthetic characteristics of ‘Cuiguan’ pear, normal outside planting was taken as control. The results showed that the plastic film house planting was no significant effects on photosynthetic characteristic of ‘Cuiguan’ pear and the difference of net photosynthetic rate (Pn) determined at the same time between the two planting model was caused by leaf age. The light response curves were similar under the two planting models and the light saturate point was same about 800mmol.m-2.s-1. The diurnal variations of Pn and transpiration rate (Tr) of pear leaves show 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 film house planting conditions. The two most important factors in growth of pear under plastic film house planting were keeping the temperature and regulating the humidity. Improving the photosynthetic ability of whole plant was an important technique during plastic film house planting of pear.

Key words: plastic film house planting; Cuiguan; Pear; Photosynthetic characteristic

 

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