水土保持学报2011，Vol.25Issue(4)：131-134,4.
不同沙土配比对盆栽平邑甜茶的生长及15↑N吸收、利用和损失的影响
Effects of Different Sand/Soil Ratio on Growth and 15↑N Absorption,Utilization and Loss of Potted Malus hupenhensis
摘要
Abstract
One-year-old Malus hupehensis grown in a pot were used in the present study to explore the effects of different sand/soil ratio（clay with no sand,sand/soil ratio=20%,40%,60%,80%,pure-sand）on growth and 15 N absorption,utilization,and loss using 15↑N trace technique.Results showed that there were different values of plant growth,15↑N absorption and utilization under different treatments.The value of plant growth（height,stem diameter and total dry weight）was highest（37.54 cm,3.457 mm and 30.46 g） under 20% treatment,while the total nitrogen and 15↑N uptake amount were greatest（189.31 mg and 32.39 mg） under 60% treatment,the value of plant growth and 15↑N absorption and utilization under 20% to 60% treatments were higher than that of clay with no sand and high sediment concentration（sand/soil ratio60%） treatments.The 15↑N Ndff and distribution of aerial part was higher than that of underground portion among different treatments.The Ndff of each part of plant becomes higher with the increases of sand/soil ratio under 20% to 80% treatments.Sand/soil ratio was negatively correlated with the residue level of 15↑N in soil,the loss of 15↑N showed a rising trend along with the increase of sand/soil ratio.The plant growth and nutrient uptake and utilization were closely related to soil texture.The appropriate sand/soil ratio was beneficial to the growth and nitrogen absorption and utilization,while higher ratio aggravated the nitrogen loss in soil.关键词
平邑甜茶/沙土配比/15↑N/吸收/利用/损失Key words
Malus hupenhensis/sand/soil ratio/15↑N/absorption/utilization/loss分类
农业科技引用本文复制引用
房祥吉,姜远茂,彭福田,魏绍冲,葛顺峰,张大鹏,崔同丽..不同沙土配比对盆栽平邑甜茶的生长及15↑N吸收、利用和损失的影响[J].水土保持学报,2011,25(4):131-134,4.基金项目
现代农业产业技术体系建设专项 （）
公益性行业（农业）科研专项 （）
山东省农业重大应用创新课题 （）
