Titlebook: Nitrogen Cycling in Ecosystems of Latin America and the Caribbean; G. P. Robertson,R. Herrera,T. Rosswall Book 1982 Martinus Nijhoff/Dr W.

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同義聯(lián)想法

Plant assimilation and nitrogen cycling,the N-source. There is little information on long-term effects of crop N-nutrition on acidity, and acidity is a critical factor that affects agricultural productivity in many tropical soils. Thus, plant control of pH and the acid/base balance in the soil as a consequence of nitrogen uptake and assimilation are important areas of future research.

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專(zhuān)心

Simulation of nitrogen in agro-ecosystems: Criteria for model selection and use,f computational facilities, ii) the spatial and temporal scales of application, iii) the intended use of the simulations, iv) the availability of model input data, and v) the confidence regions associated with the model output.

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phase-2-enzyme

骯臟

15N-urea transport and transformation in two deforested Amazonian soils under laboratory conditionss was 91% for the Podzol and 86% for the Latosol. NH..-N from urea hydrolysis was also readily leached and its recovery in the effluent was 4.2% for the Podzol and 11.2% for the Latosol. Very little nitrogen — including exchangeable NH..-N and biomass nitrogen — was left in the columns of either soi

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