NEIGAE OpenIR  > 湿地生态系统管理学科组
Root Water Uptake and Root Nitrogen Mass Distributions of Soybean under Different Nitrogen and Water Supply
X. M. Zhu and B. J. Han
2018
Source PublicationInternational Journal of Agriculture and Biology
Volume20Issue:1Pages:52-56
Other AbstractAs the essential information to modelling soil water and nutrient transport, the distributions of root water uptake (RWU) have been studied extensively. However, most RWU models are based on root length density (RLD) on some irrational assumption (e.g. water uptake is proportional to RLD). In this study, soybean (Glycine max L.) was grown in soil columns under different water and nitrogen supply to explore the distributions of root nitrogen mass (RNM) and RWU. The RWU model based on RNM density was then established and compared with models based on RLD. Results showed that the maximum RWU rate was correlated with the RNM density that was linear and weak. In general, all relative errors (RE) between measured and simulated values of the total water mass absorbed by soybean using model based on RNM were larger than 10%. It indicated that the RWU model based on RNM was not reliable for simulating RWU in a soil-soybean system, which probably owed to special characteristics of nitrogen absorption of legume plant. (c) 2018 Friends Science Publishers
Document Type期刊论文
Identifierhttp://ir.iga.ac.cn/handle/131322/9245
Collection湿地生态系统管理学科组
Recommended Citation
GB/T 7714
X. M. Zhu and B. J. Han. Root Water Uptake and Root Nitrogen Mass Distributions of Soybean under Different Nitrogen and Water Supply[J]. International Journal of Agriculture and Biology,2018,20(1):52-56.
APA X. M. Zhu and B. J. Han.(2018).Root Water Uptake and Root Nitrogen Mass Distributions of Soybean under Different Nitrogen and Water Supply.International Journal of Agriculture and Biology,20(1),52-56.
MLA X. M. Zhu and B. J. Han."Root Water Uptake and Root Nitrogen Mass Distributions of Soybean under Different Nitrogen and Water Supply".International Journal of Agriculture and Biology 20.1(2018):52-56.
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