农业工程学报2011，Vol.27Issue(10)：277-281,5.DOI:10.3969/j.issn.1002-6819.2011.10.049
不同营养液浓度对温室黄瓜叶片光合特性的影响
Effect of different electrical conductivity on photosynthetic characteristics of cucumber leaves in greenhouse
摘要
Abstract
In order to study the effect of different electrical conductivity (EC) on leaves photosynthetic characteristics, experiment was conducted in Venlo greenhouse at Jiangsu University from September 10th 2009 to June 30th 2011. In the experiment four kinds of nutrient solution with different EC were use to water cucumber and the EC value were 0.036 dS/m, 1.5, 2.2 and 2.5 dS/m, respectively. Moreover, photosynthesis rate, Chlorophyll fluorescence, Chlorophyll content and production with different EC were measured and relationship between among were analyzed. The result showed that electrical conductivity of nutrient solution had a great effect on value of SPAD, maximum photosynthesis rate, initial light use efficiency and electron transport rate of cucumber lower leaves in greenhouse. No significant difference was found between T3 treatment (EC=2.5 dS/m) and T2 treatment (EC=2.2 dS/m) about value of SPAD, maximum photosynthesis rate, initial light use efficiency, electron transport rate and production of Upper and Middle Leaves, but significantly bigger than TO treatment (EC=0.036.5 dS/m) and Tl treatment (EC=1.5 dS/m). The experimental model among maximum photosynthesis rate and initial light use efficiency and soil plant analysis development of leaves were established. Relationship between photosynthesis rate and electron transport rate was described to power. This research can provide theoretic foundation to nutrient solution management based on leaves photosynthetic rate.关键词
温室/电导率/电子传递特性/营养液/光合速率/黄瓜Key words
greenhouses/ electric conductivity/ electron transport properties/ nutrient solution/ photosynthesis rate/ cucumber分类
农业科技引用本文复制引用
倪纪恒,毛罕平,马万征..不同营养液浓度对温室黄瓜叶片光合特性的影响[J].农业工程学报,2011,27(10):277-281,5.基金项目
江苏省农业装备与智能化高技术研究重点实验室项目资助(BM2009703) （BM2009703）
高校博士学科点专项基金(200802990009) （200802990009）
江苏省高校自然科学研究重大项目(10KJA210010) （10KJA210010）
江苏省科技支撑计划资助项目(BE2011338) （BE2011338）
