Journal Title
Title of Journal: Nutr Cycl Agroecosyst
|
Abbravation: Nutrient Cycling in Agroecosystems
|
Publisher
Springer Netherlands
|
|
|
|
|
|
Authors: Mingsheng Fan Shihua Lu Rongfeng Jiang Xuejun Liu Xiangzhong Zeng Keith W T Goulding Fusuo Zhang
Publish Date: 2007/07/12
Volume: 79, Issue: 3, Pages: 255-265
Abstract
A field experiment and farm survey were conducted to test nitrogen N inputs 15Nlabelled fertilizer balance and mineral N dynamics of a rice–wheat rotation in southwest China Total N input in one rice–wheat cycle averaged about 448 kg N ha−1 of which inorganic fertilizer accounted for 63 of the total The effects of good N management strategies on N cycling were clear an optimized N treatment with a 27 reduction in total N fertilizer input over the rotation decreased apparent N loss by 52 and increased production sum of grain yield of rice and wheat compared with farmers’ traditional practice In the 15Nlabelled fertilizer experiment an optimized N treatment led to significantly lower 15N losses than farmers’ traditional practice N loss mainly occurred in the rice growing season which accounted for 82 and 67 of the total loss from the rotation in farmers’ fields and the optimized N treatment respectively After the wheat harvest accumulated soil mineral N ranged from 42 to 115 kg ha−1 in farmers’ fields of which the extractable soil NO3 −–N accounted for 63 However flooding soil for rice production significantly reduced accumulated mineral N after the wheat harvest in the 15N experiment farmers’ practice led to considerable accumulation of mineral N after the wheat harvest 125 kg ha−1 of which 69 was subsequently lost after 13 days of flooding Results from this study indicate the importance of N management in the wheatgrowing season which affects N dynamics and N losses significantly in the following rice season Integrated N management should be adopted for rice–wheat rotations in order to achieve a better N recovery efficiency and lower N lossWe thank the 948 Major International Cooperation Programme of the Chinese Ministry of Agriculture Grant No 2003Z53 the Program for Changjiang Scholars and the Innovative Research Team in University IRT0511 and the 863 State Hightech Research Development Project Grant No 2002AA6Z3264 for generous financial support Rothamsted Research receives grantinaid from the UK Biotechnology and Biological Sciences Research Council
Keywords:
.
|
Other Papers In This Journal:
- Amending soil with used cooking oil to reduce nitrogen losses after cole crop harvest: a 15 N study
- Effects of fertiliser type and the presence or absence of plants on nitrous oxide emissions from irrigated soils
- Relative contribution of trees and crops to soil carbon content in a parkland system in Burkina Faso using variations in natural 13 C abundance
- Shrubs affect soil nutrients availability with contrasting consequences for pasture understory and tree overstory production and nutrient status in Mediterranean grazed open woodlands
- Forecasting long-term global fertilizer demand
- 15 N tracer technique analysis of the absorption and utilisation of nitrogen fertiliser by potatoes
- Nitrogen, phosphorus, and potassium budgets in Indian agriculture
- Effects of different manuring systems with and without biogas digestion on nitrogen cycle and crop yield in mixed organic dairy farming systems
- Crop response of aerobic rice and winter wheat to nitrogen, phosphorus and potassium in a double cropping system
- Net N immobilisation during the biodegradation of mucilage in soil as affected by repeated mineral and organic fertilisation
- Phosphorus and potassium cycling in a long-term no-till integrated soybean-beef cattle production system under different grazing intensities insubtropics
- Contribution of relay intercropping with legume cover crops on nitrogen dynamics in organic grain systems
- Method and timing of grassland renovation affects herbage yield, nitrate leaching, and nitrous oxide emission in intensively managed grasslands
- Mineralizable soil nitrogen and labile soil organic matter in diverse long-term cropping systems
- Accumulation of phosphorus fractions in typic Hapludalf soil after long-term application of pig slurry and deep pig litter in a no-tillage system
- Soil N 2 O fluxes in integrated production systems, continuous pasture and Cerrado
- Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe
- Gross nitrogen mineralization in pulse-crop rotations on the Northern Great Plains
- Management strategies for reducing soil degradation through modeling in a GIS environment in northern Ethiopia catchment
- Millet nutrient use efficiency as affected by natural soil fertility, mineral fertilizer use and rainfall in the West African Sahel
- Nitrogen fertilization and critical nitrogen concentration for contemporary high yielding cotton under no-tillage
- Effects of catch crops on silage maize ( Zea mays L.): yield, nitrogen uptake efficiency and losses
- Nutrient cycling in an agroforestry alley cropping system receiving poultry litter or nitrogen fertilizer
- How much nitrogen is fixed by biological symbiosis in tropical dry forests? 2. Herbs
- Nitrogen fertilizer placement and timing affects bread wheat ( Triticum aestivum) quality and yield in an irrigated bed planting system
- Nitrogen fixation of red clover interseeded with winter cereals across a management-induced fertility gradient
- Response of bulk chemical composition, lignin and carbohydrate signature to grassland conversion in a ley-arable cropping system
- Nitrogen recovery and downslope translocation in maize hillside cropping as affected by soil conservation
- Effect of seasonal rainfall, N fertilizer and tillage on N utilization by dryland wheat in a semi-arid environment
- Long-term effects of fertilization and manuring on groundnut yield and nutrient balance of Alfisols under rainfed farming in India
- Response of intensively grazed ryegrass dairy pastures to fertiliser phosphorus and potassium
- Effect of seasonal rainfall, N fertilizer and tillage on N utilization by dryland wheat in a semi-arid environment
- Above- and belowground litter stocks and decay at a multi-species afforestation site on arid, saline soil
- Productivity of yam-based systems with herbaceous legumes and short fallows in the Guinea-Sudan transition zone of Benin
|