不同水分梯度下楸树苗期生长及光合特征比较
|
摘要
以1a生楸树根插苗为试验材料,设置95%—100%FC、85%—90%FC、70%—75%FC、50%—55%FC等不同梯度的土壤含水量,对生长旺季的光合特征及生长量进行测量,研究苗期楸树对不同土壤水分含量的生长及光合特征响应。结果显示:高土壤含水量(≧85%FC)和低土壤含水量(≦75%)地径和苗高生长量差异显著(P<0.05),随着土壤含水量逐渐下降,地径和苗高生长量、根重、茎重及根干比均呈下降趋势。光合特征比较发现,上午净光合速率显著高于下午,净光合速率的日变化主要直接受制于气孔因素; 85%—90%FC处理叶片的净光合日总量最大, 50%—55%FC处理叶片的净光合日总量最小。在所有光强梯度下,高土壤水分含量处理(≧85%FC)的叶片净光合速率均明显较高,尤其是85%—90%FC处理,光利用能力和光合潜力都具有较大优势。从生长和光合特征综合分析结果可以看出,四种处理中85%—90%FC处理最有优势和潜力,是楸树苗期生长最为适宜的土壤含水量。
In order to compare the differences of growth and photosynthetic characteristics of the Catalpa bungei seedlings at different soil water content, 1-year-old Catalpa bungei seedlings by root cutting were used as the experimental materials. Growth and photosynthetic characteristics were measured during fast-growing period in different soil water content. The results showed that there were significant differences(P<0.05) in height and base diameter increment among seedlings living in high soil water content(≧85% FC) and those living in low soil water content(≦75% FC). With the decrease of soil water content, height and base diameter increment, root weight, stem weight and root/stem were showing a downward trend gradually. The net photosynthetic rate measured in the morning was significantly higher than that measured in the afternoon, and the diurnal changes of net photosynthetic rate was mainly directly affected by stomatal factors. The day total net photosynthetic rate of 85%-90% FC treatment was the largest, and the day total net photosynthetic rate of 50%-55% FC treatment was the smallest. The net photosynthetic rate of leaf from high soil water content(≧85% FC) was significantly higher than that from low soil water content in all light intensity gradient, especially the 85%-90% FC treatment had a greater advantage in light utilization capacity and photosynthetic potential. Comprehensive analysis of growth and photosynthetic characteristics indicated that85%-90% FC treatment had the most advantages and potential in four treatments, which was the most appropriate soil water content in the seedling growth.
In order to compare the differences of growth and photosynthetic characteristics of the Catalpa bungei seedlings at different soil water content, 1-year-old Catalpa bungei seedlings by root cutting were used as the experimental materials. Growth and photosynthetic characteristics were measured during fast-growing period in different soil water content. The results showed that there were significant differences(P<0.05) in height and base diameter increment among seedlings living in high soil water content(≧85% FC) and those living in low soil water content(≦75% FC). With the decrease of soil water content, height and base diameter increment, root weight, stem weight and root/stem were showing a downward trend gradually. The net photosynthetic rate measured in the morning was significantly higher than that measured in the afternoon, and the diurnal changes of net photosynthetic rate was mainly directly affected by stomatal factors. The day total net photosynthetic rate of 85%-90% FC treatment was the largest, and the day total net photosynthetic rate of 50%-55% FC treatment was the smallest. The net photosynthetic rate of leaf from high soil water content(≧85% FC) was significantly higher than that from low soil water content in all light intensity gradient, especially the 85%-90% FC treatment had a greater advantage in light utilization capacity and photosynthetic potential. Comprehensive analysis of growth and photosynthetic characteristics indicated that85%-90% FC treatment had the most advantages and potential in four treatments, which was the most appropriate soil water content in the seedling growth.
引文
[1]吴丽华,王军辉,林娟.楸树植物资源的研究概况[J].上海交通大学学报:农业科学版,2010,28(1):91-96.
[2]杨玉珍,王顺财,彭方仁.我国楸树研究现状及开发利用策略[J].林业科技开发,2006,20(3):4-7.
[3]胡语婕,韦小丽,李建勇.不同水分管理对楸树苗木速生期生长及生理的影响[J].福建林业科技,2009,36(4):153-157.
[4]张烨然,杜克兵,仝瑞冠等.3种梓树属植物的抗涝性[J].东北林业大学学报,2017,45(3):23-28.
[5]孙嘏,刘洪剑,傅玉兰,等.江淮地区引种楸树光合生理特性的比较研究[J].林业科学研究,2008,21(5):635-639.
[6]赵曦阳,王军辉,张金凤,等.楸树无性系光合特性研究[J].西北植物学报,2012,31(8):1665-1671.
[7]曹珂,王力荣,朱更瑞,等.桃幼树年周期光合特性及落叶期对营养生长的影响[A].中国园艺学会.中国园艺学会桃分会成立暨学术研讨会论文集[C].中国园艺学会,2007:5.
[8]YE Zipiao.A new model for relationship between irradiance and the rate of photosynthesis in Oryza sativa[J].Photosynthetica,2007,45(4):637-640.
[9]叶子飘,杨小龙,康华靖.C3和C4植物光能利用效率和水分利用效率的比较研究[J].浙江农业学报,2016,28(11):1867-1873.
[10]DENMEAD O T,SHAW R H.Availability of soil water to plants as affected by soil moisture content and meteorological conditions[J].Agronomy journal,1962,54(5):385-390.
[11]GU L,PALLARDY S G,TU K,et al.Reliable estimation of biochemical parameters from C3 leaf photosynthesisintercellular carbon dioxide response curves[J].Plant,Cell&Environment,2010,33(11):1852-1874.
[12]黄秦军,黄国伟,丁昌俊,等.美洲黑杨杂种不同生长势无性系光合特征[J].林业科学,2013,49(3):56-62.
[13]王昕,孙永林,刘西平.土壤含水量对刺槐光合能力和碳水化合物分配的影响[J].西北林学院学报,2015,30(1):20-25.
[14]徐军,陈海玲,李清河,等.土壤水分含量对白刺幼苗表型可塑性生长的影响[J].西北林学院学报,2017,32(2):101-105.
[15]HAYNES R J,SWIFT R S.Stability of soil aggregates in relation to organic constituents and soil water content[J].European Journal of Soil Science,1990,41(1):73-83.
[16]MOESLUND J E,ARGE L,B?CHER P K,et al.Topographically controlled soil moisture drives plant diversity patterns within grasslands[J].Biodiversity and conservation,2013,22(10):2151-2166.
[17]姜瑞芳,刘艳红.土壤基质和水分对珙桐幼苗生长的影响[J].西北林学院学报,2016,31(4):134-139.
[18]李熙萌,杨琼,李征珍,等.胡杨(Populus euphratica)叶片呼吸作用对地下水埋深的响应[J].生态科学,2016,35(3):29-36.
[19]PUERTOLAS J,ALCOBENDAS R,ALARCóN J J,et al.Long-distance abscisic acid signalling under different vertical soil moisture gradients depends on bulk root water potential and average soil water content in the root zone[J].Plant,Cell&Environment,2013,36(8):1465-1475.
[20]何茜,苏艳,晏紫伊,等.增施氮肥对欧洲云杉光合生理特性的影响[J].生态科学,2015,34(3):109-115.
[21]王冉,何茜,李吉跃,等.中国12种珍稀树种光合生理特性[J].东北林业大学学报,2010,38(11):15-20.
[22]江锡兵,李博,张志毅,等.美洲黑杨与大青杨杂种无性系苗期光合特性研究[J].北京林业大学学报,2009,31(5):151-154.
[2]杨玉珍,王顺财,彭方仁.我国楸树研究现状及开发利用策略[J].林业科技开发,2006,20(3):4-7.
[3]胡语婕,韦小丽,李建勇.不同水分管理对楸树苗木速生期生长及生理的影响[J].福建林业科技,2009,36(4):153-157.
[4]张烨然,杜克兵,仝瑞冠等.3种梓树属植物的抗涝性[J].东北林业大学学报,2017,45(3):23-28.
[5]孙嘏,刘洪剑,傅玉兰,等.江淮地区引种楸树光合生理特性的比较研究[J].林业科学研究,2008,21(5):635-639.
[6]赵曦阳,王军辉,张金凤,等.楸树无性系光合特性研究[J].西北植物学报,2012,31(8):1665-1671.
[7]曹珂,王力荣,朱更瑞,等.桃幼树年周期光合特性及落叶期对营养生长的影响[A].中国园艺学会.中国园艺学会桃分会成立暨学术研讨会论文集[C].中国园艺学会,2007:5.
[8]YE Zipiao.A new model for relationship between irradiance and the rate of photosynthesis in Oryza sativa[J].Photosynthetica,2007,45(4):637-640.
[9]叶子飘,杨小龙,康华靖.C3和C4植物光能利用效率和水分利用效率的比较研究[J].浙江农业学报,2016,28(11):1867-1873.
[10]DENMEAD O T,SHAW R H.Availability of soil water to plants as affected by soil moisture content and meteorological conditions[J].Agronomy journal,1962,54(5):385-390.
[11]GU L,PALLARDY S G,TU K,et al.Reliable estimation of biochemical parameters from C3 leaf photosynthesisintercellular carbon dioxide response curves[J].Plant,Cell&Environment,2010,33(11):1852-1874.
[12]黄秦军,黄国伟,丁昌俊,等.美洲黑杨杂种不同生长势无性系光合特征[J].林业科学,2013,49(3):56-62.
[13]王昕,孙永林,刘西平.土壤含水量对刺槐光合能力和碳水化合物分配的影响[J].西北林学院学报,2015,30(1):20-25.
[14]徐军,陈海玲,李清河,等.土壤水分含量对白刺幼苗表型可塑性生长的影响[J].西北林学院学报,2017,32(2):101-105.
[15]HAYNES R J,SWIFT R S.Stability of soil aggregates in relation to organic constituents and soil water content[J].European Journal of Soil Science,1990,41(1):73-83.
[16]MOESLUND J E,ARGE L,B?CHER P K,et al.Topographically controlled soil moisture drives plant diversity patterns within grasslands[J].Biodiversity and conservation,2013,22(10):2151-2166.
[17]姜瑞芳,刘艳红.土壤基质和水分对珙桐幼苗生长的影响[J].西北林学院学报,2016,31(4):134-139.
[18]李熙萌,杨琼,李征珍,等.胡杨(Populus euphratica)叶片呼吸作用对地下水埋深的响应[J].生态科学,2016,35(3):29-36.
[19]PUERTOLAS J,ALCOBENDAS R,ALARCóN J J,et al.Long-distance abscisic acid signalling under different vertical soil moisture gradients depends on bulk root water potential and average soil water content in the root zone[J].Plant,Cell&Environment,2013,36(8):1465-1475.
[20]何茜,苏艳,晏紫伊,等.增施氮肥对欧洲云杉光合生理特性的影响[J].生态科学,2015,34(3):109-115.
[21]王冉,何茜,李吉跃,等.中国12种珍稀树种光合生理特性[J].东北林业大学学报,2010,38(11):15-20.
[22]江锡兵,李博,张志毅,等.美洲黑杨与大青杨杂种无性系苗期光合特性研究[J].北京林业大学学报,2009,31(5):151-154.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |