NDLI: Crop productivity and nutrient use efficiency as affected by long-term fertilisation in North China Plain

Content Provider	Springer Nature Link
Author	Wang, Yingchun Wang, Enli Wang, Daolong Huang, Shaomin Ma, Yibing Smith, Chris J. Wang, Ligang
Copyright Year	2009
Abstract	Nutrient inputs into crop production systems through fertilisation have come under increased scrutiny in recent years because of reduced nutrient use efficiency and increased environmental impact. Fifteen years of experimental data on dynamics of N, P and K in soil, crop yield and nutrient uptake from nine fertilisation treatments at Zhengzhou, North China Plain, were used to analyse the contribution of different fertilisation treatments to crop yield, nutrient use efficiency and accumulation of nutrients in soil. The results showed that both N and P were limiting factors for crop growth. Without additional N and P fertilisation, only a very low yield level (ca 2 t ha−1 for wheat and 3 t ha−1 for maize) could be maintained. To achieve the potential productivity (i.e. yield level free of water and nutrient stresses) of wheat (6.9 t ha−1) and maize (8.3 t ha−1), wheat would need, on average, 170 kg N ha−1, 32 kg P ha−1 and 130 kg K ha−1, while maize would need 189 kg N ha−1, 34 kg P ha−1 and 212 kg K ha−1. The N and P demands correspond well to the N and P levels supplied in one of the fertilisation treatments (NPK), while K deficiency could occur in the future if no crop residues were returned or no extra K was applied. On average under this NPK treatment, 80% of N and 71% of P could be recovered by the wheat–maize system. Treatments with nutrient inputs higher than the NPK treatment and treatments without combination of N and P have led to accumulation of N and P in the soil profile. The input levels of N and P in the NPK treatment are recommended in fertiliser management, with additional K to avoid future soil K deficiency.
Starting Page	105
Ending Page	119
Page Count	15
File Format	PDF
ISSN	13851314
Journal	Nutrient Cycling in Agroecosystems
Volume Number	86
Issue Number	1
e-ISSN	15730867
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-04-16
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Soil nutrient balance Nutrient demand Wheat Maize Modelling Nitrogen Phosphorus Agriculture
Content Type	Text
Resource Type	Article
Subject	Agronomy and Crop Science Soil Science

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