大棚瓠瓜CO_2加富的生理生态效应  

Ecophysiological effects of CO_2 enrichment on bottle gour in plastic house

作　　者：朱世东[1] 徐文娟[1] 

机构地区：[1]安徽农业大学园艺系,合肥230036

出　　处：《应用生态学报》2002年第4期429-432,共4页Chinese Journal of Applied Ecology

基　　金：安徽省"九五"科技攻关资助项目(9911001).

摘　　要：春季对大棚瓠瓜CO2，可促进植株的生长发育，株高，茎粗增幅分别达到3．90％－19．48％和11．58％－27．37％，叶片厚度及叶面积也分别增加38．46％－69．23％和26．09％－49．38％；第一雌花着生节位平均降低2．6－4．0节，平均单果重增加4．05％－19．62％，产量 提高8．65％－19．47％，在1000μmol.mol^-1范围内，CO2浓度每增加100μmol.mol^-1，单果重和产量分别增加31．97g和68．39kg.667m^-2，第一雌花着生节位降低0．35节，在1000μmol.mol^-1浓度下，瓠瓜光合速率和羧化速率均达最高值，春季大棚瓠瓜CO2适宜施用浓度为1000μmol.mol^-1左右。In vegetable growing under protection, lack of carbon dioxide is one of the most important factors limiting photosynthesis. The application of 600 - 1200 μmol·mol-1 CO2 in the plastic house increased photosyntheitc rates and ratio of C/N, promoted both vegetative and reproductive growth of bottle gourd plants. Plant height, stem diameter, leaf thickness and leaf area increased by 3.90-19.48%, 11.58-27.37%, 38.46-69.23% and 26.09-49.38%, respectively. Average single fruit weight and yield were 4.05-19.62% and 8.65-19.47% higher than that in normal air. Primary female flower position was lowered by 2.6-4.0. Net photosyntheitc rate and the carboxylase activity of RuBP were greatest under CO2 1000μmol· mol-1. The optimal concentration of CO2 applied to bottle gourd in spring was about 1000 μmol·mol-1.

关 键 词：瓠瓜 CO2加富 生理生效效应 设施栽培 光合作用 产量 大棚栽培 

分 类 号：S652.9[农业科学—果树学]