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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口诀法

Crop utilization and fixation of added ammonium in soils of the West Indies,er..Plant uptake of added NH..-N in greenhouse pot experiments showed that a greater percentage of fertilizer-N was taken up by Sudan grass (.) at a fertilizer rate of 40 kg NH..-N ha. than at a rate of 200 kg NH..-N ha.. However, the recovery was low, ranging from 10 to 25 percent of that applied..

Delirium

Nitrogen cycling in a ,N-fertilized bean (, L.) crop,ived from fertilizer applied to the first crop, and 1.4% of the nitrogen in the third crop. Nitrogen utilization efficiencies for these two crops, with respect to the nitrogen applied to the first crop, were 4.6 and 1.2%, respectively. In total, the three crops recovered 44.3% of the nitrogen applie

硬化

Nitrogen cycling in a flooded-soil ecosystem planted to rice (, L.),emaining nitrogen was lost from the system. Losses of N due to ammonia volatilization were minimal because fertilizer-N was incorporated into the soil. A significant portion of inorganic-N was lost by ammonium diffusion from the anaerobic layer to the aerobic layer in response to a concentration gra

焦虑

P. L. Libardi,R. L. Victoria,K. Reichardt,A. Cervellini

松驰

Book 1982tances has there, however, been a focus on the biogeochemical cycles at the ecosystem level. The meeting resulting in this volume was an attempt to bring together existing information on nitrogen cycling in ecosystems of Latin America and the Caribbean and discuss this in an ecosystem context.

ureter

ly few instances has there, however, been a focus on the biogeochemical cycles at the ecosystem level. The meeting resulting in this volume was an attempt to bring together existing information on nitrogen cycling in ecosystems of Latin America and the Caribbean and discuss this in an ecosystem context.978-94-009-7641-2978-94-009-7639-9

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