Tracking nitrogen losses in a greenhouse crop rotation experiment in North China using the EU-Rotate_N simulation model

Tracking nitrogen losses in a greenhouse crop rotation experiment in North China using the EU-Rotate_N simulation model

2010

(Clive)

Vegetable production in China is associated with high inputs of nitrogen, posing a risk of losses to the environment. Organic matter mineralisation is a considerable source of nitrogen (N) which is hard to quantify. In a two-year greenhouse cucumber experiment with different N treatments in North China, non-observed pathways of the N cycle were estimated using the EU-Rotate_N simulation model. EU-Rotate_N was calibrated against crop dry matter and soil moisture data to predict crop N uptake, soil mineral N contents, N mineralisation and N loss. Crop N uptake (Modelling Efficiencies (ME) between 0.80 and 0.92) and soil mineral N contents in different soil layers (ME between 0.24 and 0.74) were satisfactorily simulated by the model for all N treatments except for the traditional N management. The model predicted high N mineralisation rates and N leaching losses, suggesting that previously published estimates of N leaching for these production systems strongly underestimated the mineralisation of N from organic matter.

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Mots clés AGROVOC

analysis china crop rotation crops cucumbers cucumis sativus fertilizers gardening greenhouses leaching methods mineralization models nitrogen nitrogen nitrogen content organic matter production technology risk simulation models soil soil water standards utilization vegetable growing

Informations bibliographiques

Publié dans

Environmental pollution

Volume 158 Numéro 6 Pagination 2218 - 2229 ISSN 0269-7491

Editeur

Russian Academy of Science. Southern Scientific Centre. Federal Research Centre

D'autres materias

Biological; Soil minerals; Agricultural; Growth & development

Langue

anglais

Note

In the special section: advances of air pollution science: from forest decline to multiple-stress effects on forest ecosystem services / edited by marcus schaub, rainer matyssek and gerhard wieser.

Paper presented at the international conference on air polllution and climate change at contrasting altitude and latitude, held september 7-12, 2009, murten, switzerland.

Includes references

Type

Text; Journal Article

Sur AGRIS depuis: 2024-02-28

Format: MODS

Fournisseur de données

Cette notice bibliographique a été fournie par National Agricultural Library

Découvrez la collection de ce fournisseur de données dans AGRIS

Liens

DOI http://dx.doi.org/10.1016/j.envpol.2010.02.014

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