Model Simulation of Soil Phosphorus Uptake by Root System of Maize and Soybean

doi:10.7668/hbnxb.2016.01.030

Abstract

Abstract: Simulating phosphorus (P) uptake by crop roots is of great significance for crop fertilization management.In order to validate the applicability and effectiveness of nutrient uptake model for phosphorus (P) uptake by crop roots,a pot experiment in this study was carried out to obtain 15 model parameters associated with soil characteristics,root morphology,root physiology and water in maize and soybean.Aboveground P uptake of maize and soybean was simulated and validated by NST 3.0 soft.The results showed that P uptake of maize and soybean exhibited an increased trend,similar to exponential curve,with prolonged growth time.During the 45 d growth,the maize had a higher P uptake than soybean.A comparison between the simulated and measured P uptake revealed that the NST model could well simulate the P uptake by maize roots,but simulated P uptake was lower than measured value in soybean.Regression analysis showed that the simulated and measured values exhibited a significant regression relationship (P<0.05).Simulated P uptake explained 70.22% of measured P uptake,suggesting that simulated P uptake,to a large extent,can represent measured P uptake of two species.Overall,NST model can well simulated the P uptake of maize and soybeans.

Key words: Phosphorus uptake, Maize, Soybean, Mechanism model, Root system

CLC Number:

S143.2

TANG Hongliang, LIU Long, GUO Hong. Model Simulation of Soil Phosphorus Uptake by Root System of Maize and Soybean[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(1): 186-190. doi: 10.7668/hbnxb.2016.01.030.

/ / Recommend / Download Citations

URL: http://www.hbnxb.net/EN/10.7668/hbnxb.2016.01.030

http://www.hbnxb.net/EN/Y2016/V31/I1/186

References

[1] Silberbush M,Barber S A.Sensitivity of simulated phosphorus uptake to parameters used by a mechanistic-mathematical model[J].Plant and Soil,1983,74(1):93-100.
[2] Comerford N B,Cropper W P,Li H,et al.Soil supply and nutrient demand (SSAND):A general nutrient uptake model and an example of its application to forest management[J].Canadian Journal of Soil Science,2006,86:665-673.
[3] Claassen N,Barber S A.Simulation model for nutrient uptake from soil by a growing root system[J].Agronomy Journal,1976,68:961-964.
[4] 姚其华,刘武定,陈明亮,等.植物根系吸收磷的机理模型验证研究[J].植物营养与肥料学报,1999,5(3):263-272.
[5] 张富仓,康绍忠,李志军.土壤-根系统养分迁移和吸收的数值模拟Ⅱ.模型验证及参数的敏感性分析[J].西北农林科技大学学报:自然科学版,2003,31(1):15-23.
[6] Vandamme E,Renkens M,Pypers P,et al.Root hairs explain P uptake efficiency of soybean genotypes grown in a P-deficient Ferralsol[J].Plant and Soil,2013,369(1/2):269-282.
[7] Postma J A,Lynch J P.Complementarity in root architecture for nutrient uptake in ancient maize/bean and maize/bean/squash polycultures[J].Annals of Botany,2012,110(2):521-534.
[8] Chen Y L,Dunbabin V M,Postma J A,et al.Modelling root plasticity and response of narrow-leafed lupin to heterogeneous phosphorus supply[J].Plant and Soil,2013,372:319-337.
[9] Mollier A,De Willigen P,Heinen M,et al.A two-dimensional simulation model of phosphorus uptake including crop growth and P-response[J].Ecological Modelling,2008,210(4):453-464.
[10] Khandan-Mirkohi A,Schenk M K.Phosphorus efficiency of ornamental plants in peat substrates[J].Journal of Plant Nutrition and Soil Science,2009,172(3):369-377.
[11] Lin W,Kelly J M.Nutrient uptake estimates for woody species as described by the NST 3.0,SSAND,and PCATS mechanistic nutrient uptake models[J].Plant and Soil,2010,335(1/2):199-212.
[12] Adams F,Burmester C,Hue N,et al.A comparison of column-displacement and centrifuge methods for obtaining soil solutions[J].Soil Science Society of America Journal,1980,44:733-735.
[13] Kovar J,Barber S.Potassium supply characteristics of thirty-three soils as influenced by seven rates of potassium[J].Soil Science Society of America Journal,1990,54:1356-1361.
[14] Claassen N,Barber S A.A method for characterizing the relation between nutrient concentration and flux into roots of intact plants[J].Plant Physiology,1974,54(4):564-568.
[15] Itoh S,Barber S A.Phosphorus uptake by six plant species as related to root hairs[J].Agronomy Jouranl,1983,75(3):457-461.
[16] Sadana U S,Claassen N.Manganese dynamics in the rhizosphere and Mn uptake by different crops evaluated by a mechanistic model[J].Plant and Soil,2000,218(1/2):233-238.
[17] Samal D,Kovar J L,Steingrobe B,et al.Potassium uptake efficiency and dynamics in the rhizosphere of maize (Zea mays L.),wheat (Triticum aestivum L.),and sugar beet (Beta vulgaris L.) evaluated with a mechanistic model[J].Plant and Soil,2010,332(1/2):105-121.
[18] Pypers P,Delrue J,Diels J,et al.Phosphorus intensity determines short-term P uptake by pigeon pea (Cajanus cajan L.) grown in soils with differing P buffering capacity[J].Plant and Soil,2006,284(1/2):217-227.
[19] Khandan-Mirkohi A,Schenk M K.Phosphorus efficiency of ornamental plants in peat substrates[J].Journal of Plant Nutrition and Soil Science,2009,172:369-377.
[20] Wang E L,Ridoutt B G,Luo Z K,et al.Using systems modelling to explore the potential for root exudates to increase phosphorus use efficiency in cereal crops[J].Environmental Modelling Software,2013,46:50-60.
[21] Gerke J.The acquisition of phosphate by higher plants:effect of carboxylate release by the roots.A critical review[J].Journal of Plant Nutrition and Soil Science,2015,178(3):351-364.

Please choose a citation manager

Content to export