發(fā)布時(shí)間：2018-06-25 00:58

  本文選題：光合作用 + 凈光合速率��； 參考：《安徽農(nóng)業(yè)大學(xué)》2015年碩士論文

【摘要】：彩色植物在城市彩化中具有廣泛的應(yīng)用前景。本研究對(duì)四種彩色植物金葉紅瑞木、金葉銀杏、紫葉加拿大紫荊和金葉垂榆的光合生理、耐陰性和抗旱性進(jìn)行了系統(tǒng)的研究,旨在為這四種彩色植物的引種和在城市園林中的配植應(yīng)該提供理論依據(jù)。研究成果表明:1、金葉紅瑞木、金葉銀杏、紫葉加拿大紫荊、金葉垂榆的光補(bǔ)償點(diǎn)分別為30.69、67.87、35.27和74.14μmol·m~(-2)·s~(-1),光飽和點(diǎn)分別為1448.67、1472.62、1470.84和1326.59μmol·m~(-2)·s~(-1);金葉垂榆和金葉銀杏屬于不耐陰的陽性樹種,紫葉加拿大紫荊、金葉紅瑞木屬于稍耐陰的陽性樹種。2、金葉紅瑞木和金葉銀杏在春、秋季的凈光合速率日變化呈單峰曲線,夏季呈雙峰曲線;紫葉加拿大紫荊、金葉垂榆在春、夏、秋三季的凈光合速率日變化呈單峰曲線。凈光合速率最大日平均值金葉紅瑞木和紫葉加拿大紫荊的出現(xiàn)在夏季,而金葉銀杏、金葉垂榆出現(xiàn)在秋季。3、春、夏、秋季光合有效輻射對(duì)金葉紅瑞木和金葉垂榆的凈光合速率影響最大;春季蒸騰速率、夏季相對(duì)濕度、秋季光合有效輻射對(duì)金葉銀杏凈光合速率的影響最大;春季相對(duì)濕度、夏秋季光合有效輻射對(duì)紫葉加拿大紫荊凈光合速率的影響最大。4、金葉紅瑞木春、夏、秋三季的光能利用率依次為0.64%、0.63%和0.02%,金葉銀杏春、夏、秋三季的光能利用率依次為0.43%、1.17%和0.94%,紫葉加拿大紫荊春、夏、秋三季的光能利用率分別為0.65%、0.92%和0.53%,金葉垂榆春、夏、秋三季的光能利用率分別為0.59%、0.48%和0.41%;金葉銀杏、紫葉加拿大紫荊的光能利用夏季率最高,金葉紅瑞木、金葉垂榆的光能利用率春季最高。5、金葉紅瑞木春、夏、秋三季的水分利用率依次為2.3194、4.6796和4.5300μmol CO_2·mmol~(-1) H_2O,金葉銀杏木春、夏、秋三季的水分利用率依次為2.8427、5.5144和2.6503μmol CO_2·mmol~(-1) H_2O,紫葉加拿大紫荊春、夏、秋三季的水分利用率依次為2.6578、2.9505和4.8467μmol CO_2·mmol~(-1) H_2O,金葉垂榆春、夏、秋三季的水分利用率依次為2.7845、1.0465和2.8268μmol CO_2·mmol~(-1) H_2O。金葉紅瑞木春季的抗旱能力較弱,夏季和秋季較強(qiáng);金葉銀杏夏季的抗旱能力較強(qiáng),春季次之,秋季最弱;紫葉加拿大紫荊秋季的抗旱能力較強(qiáng),夏季次之,春季較弱;金葉垂榆春、秋季的抗旱能力較強(qiáng),夏季較弱。6、金葉銀杏樹體高大,葉色美麗,適宜做行道樹和庭蔭樹;紫葉加拿大紫荊先花后葉,花色和葉色俱佳,是觀葉觀花的好材料,叢植和群植均可;金葉垂榆傘形樹冠,樹形奇特,葉色美麗,可列植路邊或叢植草坪,十分美麗;金葉紅瑞木是葉色和冬季落葉后枝條顏色都十分美麗的灌木,可叢植或列植草坪邊緣及林緣。這些彩色樹種與常綠或落葉的綠葉樹種合理搭配應(yīng)用,可以營造色彩豐富、引人入勝的景觀效果。
[Abstract]:Color plants have a wide application prospect in urban color. In this study, the photosynthetic physiology, negative tolerance and drought resistance of four kinds of color plants, red rubra, ginkgo biloba, purple leaf Bauhinia canadensis and Sanguisorba rubrum, were studied systematically. The purpose of this paper is to provide theoretical basis for the introduction of these four color plants and their matching in urban gardens. The results showed that the light compensation points of W1, Ginkgo biloba, Cercis chinensis and Sanguisorba chinensis were 30.69U 67.87735.27 and 74.14 渭 mol m ~ (-2) s ~ (-1), the light saturation points were 1448.6714721470.84 and 1326.59 渭 mol m ~ (-2) s ~ (-1), respectively, and S-1 and Ginkgo biloba were positive species which could not tolerate shade, respectively, and their light saturation points were 1448.62.621470.84 and 1326.59 渭 mol m ~ (-2) s ~ (-1), respectively. The net photosynthetic rate in spring and autumn showed a single peak curve and a double peak curve in summer, and a single peak curve in spring and a double peak curve in summer, and a single peak curve in spring, a double peak curve in summer, and a single peak curve in spring. The diurnal variation of net photosynthetic rate in summer and autumn showed a single peak curve. The maximum daily average of net photosynthetic rate (net photosynthetic rate) appeared in summer, while Ginkgo biloba and Ulmus officinalis were found in autumn, spring and summer. The effect of photosynthetic available radiation on net photosynthetic rate was the largest in autumn, transpiration rate in spring, relative humidity in summer, photosynthetic available radiation in autumn had the greatest effect on net photosynthetic rate of Ginkgo biloba, and relative humidity in spring. In summer and autumn, photosynthetic available radiation had the greatest effect on the net photosynthetic rate of Bauhinia canadensis. The light energy utilization efficiency of the three seasons was 0.64% 0.63% and 0.02%, respectively, and that of Ginkgo biloba was 0.64% and 0.02%, respectively, and that of Ginkgo biloba in spring and summer was 0.02%, respectively. The utilization rate of light energy in three seasons of autumn was 0.430.17% and 0.94%, respectively. The utilization rate of light energy in purple leaf Canadian Bauhinia chinensis in spring, summer and autumn was 0.650.92% and 0.53, respectively. The utilization rate of light energy in spring, summer and autumn was 0.5948% and 0.41 respectively, and that in Ginkgo biloba was 0.59%. The utilization rate of light energy in summer was the highest, the utilization rate of light energy was the highest in spring. 5. The water use efficiency in spring, summer and autumn was 2.31944.6796 and 4.5300 渭 mol CO2 mmol ~ (-1) H _ 2O, respectively, while that of Ginkgo biloba in spring, summer, and summer was the highest. The water use efficiency of the three seasons was 2.84275.5144 and 2.6503 渭 mol CO2 mmol ~ (-1) H _ 2O, respectively, and the water use efficiency of purple leaf Canadian Bauhinia chinensis in spring, summer and autumn were 2.6578 ~ 2.9505 and 4.8467 渭 mol CO _ 2 mmol ~ (-1) H _ 2O, respectively. The water use efficiency in summer and autumn were 2.7845, 1.0465 and 2.8268 渭 mol CO2 mmol ~ (-1) H _ 2O, respectively. The ability of drought resistance in spring is weak, summer and autumn is stronger, Ginkgo biloba is stronger in summer, spring is second, autumn is the weakest, purple leaf Canadian bauhinia has stronger drought resistance in autumn, followed by summer and spring. In spring and autumn, golden leaves have a stronger ability to resist drought, and summer is weak. 6. The tree is tall and beautiful in color and suitable for use as a street tree and a shade tree. The purple leaf Canadian bauhinia is a good material for viewing foliage, because of its excellent flower color and leaf color. The golden leaves are in the umbrella-shaped crown of the elm, the trees are peculiar in shape, and the leaves are beautiful. They can be planted on the roadside or on the grass in thickets, very beautiful; and the red rustles are the most beautiful shrubs in the color of leaves and branches after the winter leaves. The edge of lawn and forest edge can be planted or arranged. The collocation of these color trees with evergreen or deciduous green leaves can create colorful and attractive landscape effects.
【學(xué)位授予單位】：安徽農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：Q945

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