2005•SoilsOpen access

EFFECTS OF APPLICATION OF N-FERTILIZER AND CROP RESIDUES AS MANURE ON SUMMER MAIZE N RECOVERY RATE

Zhu Huo

Abstract

In this paper, effects of application of N fertilizer and crop residues as manure on NRR (N recovery rate) of summer maize were studied. The results showed as follows: the application of both straw and N-fertilizer improved NRR of summer maize to a certain degree. Especially optimized N-fertilizer application raised the NRR of summer maize by 3.12~7.39 kg/hm2. Analysis of crop yield, net economic income and environmental impact, “incorporation of crop residues into the soil plus optimized N-fertilization” is the best model in our experiment and is worth popularizing in the suburbs of Beijing.

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Key concepts: Fertilizer, Manure, Agronomy, Crop, Straw, Human fertilization, Crop residue, Yield (engineering)