应用生态学报2011，Vol.22Issue(9)：2348-2354,7.
交替隔沟灌溉与施氮量对日光温室黄瓜光合作用、生长及产量的影响
Effects of alternative furrow irrigation and nitrogen application rate on photosynthesis, growth, and yield of cucumber in solar greenhouse
摘要
Abstract
This paper studied the effects of alternative furrow irrigation and nitrogen (N) applica-tion rate (no N, optimal N, and conventional N) on the photosynthesis, growth characteristics, yield formation, and fruit quality of cucumber (Cucumis sativus) cultivar Jinyu No. 5 in a solar greenhouse in winter-spring growth season and autumn-winter season. Under alternative furrow irri-gation, the net photosynthetic rate of upper, middle, and lower leaves was appreciably lower and the transpiration rate decreased significantly, and the transient water use efficiency of upper and middle leaves improved, as compared with those under conventional irrigation. Stomatal factor was the limiting factor of photosynthesis under alternative furrow irrigation. The photosynthesis and tran-sient water use efficiency of functional leaves under alternative furrow irrigation increased with in-creasing N application rate. Comparing with conventional irrigation, alternative furrow irrigation de-creased leaf chlorophyll content and plant biomass, but increased root biomass, root/shoot ratio, and dry matter allocation in root and fruit. The economic output under alternative furrow irrigation was nearly the same as that under conventional irrigation, whereas the water use efficiency for eco-nomic yield increased significantly, suggesting the beneficial effects of alternative furrow irrigation on root development and fruit formation. With the increase of N application rate, the leaf chloro-phyll content, chlorophyll a/b, specific leaf mass, plant biomass, economic yield, and fruit Vc and soluble sugar contents under alternative furrow irrigation increased, but no significant difference was observed between the treatments optimal N and conventional N. N application had little effects on the water use efficiency for economic yield. The economic yield and biomass production of the cu-cumber were significantly higher in winter-spring growth season than in autumn-winter growth sea-son.关键词
日光温室/黄瓜/交替隔沟灌溉/氮肥/光合作用/水分利用效率/干物质分配Key words
solar greenhouse/ cucumber/ alternative furrow irrigation/ nitrogen/ photosynthesis/ water use efficiency/ dry matter allocation.分类
农业科技引用本文复制引用
张利东,高丽红,张柳霞,王树忠,眭晓蕾,张振贤..交替隔沟灌溉与施氮量对日光温室黄瓜光合作用、生长及产量的影响[J].应用生态学报,2011,22(9):2348-2354,7.基金项目
现代农业产业技术体系建设专项(CARS-25-C-12)和国家自然科学基金重点项目(50939005)资助. （CARS-25-C-12）
