roelcke cgcia nitrogen 2011-01-12 for websitetran.zalf.de/home_ip-sensor/cgcia/workshop/marco...
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www.nitrogen-management.org
Innovative nitrogen management technologies to improve agricultural production and environmental protection in
intensive Chinese agriculture
中国集约化农业中协调环境保护和生产力提高的创新型氮肥管理技术
Prof. Dr. Rolf NiederDr. Marco RoelckeTechnische Universität BraunschweigInstitute of Geoecology
Prof. Dr. Urs SchmidhalterPD Dr. Yuncai HuTechnische Universität MünchenChair of Plant Nutrition
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www.nitrogen-management.org
• China: 9% of world arable land, 22% of world population, 35% of world fertilizer consumption (FAOSTAT, 2009)
• Mineral N fertilizer use efficiency: 15%-35% (Chen & Zhu, 2002)
• In summer rice – winter wheat double crop rotations of the TaihuRegion in SE China, mean N balance surpluses were 217-335 kg N ha-1
yr-1 in mid-late 1990s (Roelcke et al., 2004)
• First national census of pollution sources: 4.7 million t of N discharged into water in 2007, 57% from agriculture, including animal husbandry, mineral fertilizers, human wastes (Chinese MOEP, Feb. 2010)
• These agricultural wastes caused by millions of farmers are much harder to control than industrially-derived pollution
Introduction
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Lake Taihu, June 2007
Chang W. Lee, NYT, 2007
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Unit: kg N per ha sown area
100 -149
150 - 199
200 - 249
<99
250 - 299
HEILONGJIANG
INNER
MONGOLIA
JILIN
LIAONINGBEIJING
TIANJIN
HEBEI
SHANDONG
JIANGSU
SHANGHAI
HENAN ANHUI
ZHEJIANG
JIANGXI
FUJIAN
(TAIWAN)
HUBEI
HUNAN
GUANDONGGUANGXI
GUIZHOU
YUNNAN
SHA
AN
XI
GANSU
NINGXIA
QINGHAI
XINJIANG
TIBET
HAINAN
ANHUI
SHANXI
SICHUAN
Unit: kg N per ha sown area
100 -149
150 - 199
200 - 249
<99
250 - 299
HEILONGJIANG
INNER
MONGOLIA
JILIN
LIAONINGBEIJING
TIANJIN
HEBEI
SHANDONG
JIANGSU
SHANGHAI
HENAN ANHUI
ZHEJIANG
JIANGXI
FUJIAN
(TAIWAN)
HUBEI
HUNAN
GUANDONGGUANGXI
GUIZHOU
YUNNAN
SHA
AN
XI
GANSU
NINGXIA
QINGHAI
XINJIANG
TIBET
HAINAN
ANHUI
SHANXI
SICHUAN
Provincial differences in average N fertilizer application rates per crop in the P.R. China for the year 2000
Ju, X.T. et al., 2004
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www.nitrogen-management.org
• To reduce the excessive mineral nitrogen fertilization for a highly sustainable and resource-saving production in intensive Chinese agriculture
• Transfer and extension of innovative technologies, research results and management practices into Chinese agricultural practice and the agricultural extension services
• Bridging the gap between the necessity to reduce GHG emissions and water pollution from agriculture on a global scale, and the execution of concrete mitigation measures on the ground
• Chances for German agro-industry and SMEs to introduce their products and technologies into the Chinese market
Overall project goals
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TU
BS
Uni
Ho
Uni
Gö
ZA
LF
K&S
N
SKWP
ABiTEP
Pfeffer
Project management TU-BS group
Prof. Dr. Rolf Nieder
Coordination: Dr. Marco Roelcke
Project management TUM group:
Prof. Dr. Urs Schmidhalter
Coordination: PD Dr. Yuncai Hu
TUM MERCK
Tec5
SKWP
Prof. Dr. Fusuo Zhang (Chinese spokesperson)
ISF(CAAS)
CRES(CAU)
ISS(CAS)
CCAP(CAS)
NATESC
TAAS
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Project structure - Main work packages
www.nitrogen-management.org
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Jiansanjiang
Quzhou
TianjinLangfang
Shouguang
Tonghai & Chenggong
Prof. FS ZhangCAU, Beijing
Dr. W Lu TAAS, Tianjin
Prof. WL Zhang CAAS, Beijing
Profs. ZC Cai, Y HanISS, CAS, Nanjing
Prof. JK Huang CCAP, CAS, Beijing
Huai‘an
Yixing
Huimin
Pilot counties and respective partners in China
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Main work packages in TUM research group
New technologies and innovative agricultural practices in cooperation with German companies (tec5, Merck, SKW):• Green WindowsTUM in farmers´ fields• Nitrogen management sensor technology• On-farm nitrate quick tests • Enhanced efficiency fertilizers
Training advisors, on-farm demonstration and implementing guidelines on the national level in collaboration with the Chinese National Agro-Tech Extension & Service Centre
Top-down/Bottom-up approaches:
TAAS
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Soil Nitrate Quick Test Technology
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GreenWindowsTUM in Germany and China
Dür
nast
Lang
fang
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Proximal Sensor Technology
Handy-Spec®Field Spectrometer(tec5, Germany)
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”Intelligent“ Fertilizers: New UI and Field experiments Chambers for emission measurements
NH3/NOx-Messung
N2O-Messung
0
50
100
150
200
250
300
350
1 2 3 4 5 6 7 8 9 10 11 12 13 14
days following application of granular urea
NH
3 em
issi
on [g
NH
3-N
ha-1
d-1
]
0
5
10
15
20
25
tem
pera
ture
[癈] p
reci
pita
tion
[mm
]
precipitation
urea
urea + P204/98
temperature
„Intelligente“ Dünger ‐ Einsatz neuer Ureaseinhibitoren (UI)
(Schraml et al., 2005)
UI reduces NH3
emission up to 50%!
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www.nitrogen-management.org
Main work packages in TU-BS research group
• Field trials on farmers’ field sites and vegetable greenhouses fordemonstration purposes: Five pilot counties from N to SE China: „3+x“ approach
• Testing of specific products and technologies in cooperation with Germancompanies (SKW, ABiTEP, Fertigation expert)
• Calculation of nitrogen balances on a field and county scale
• Agro-economical and agro-environmental investigations
• Simulation of the nitrogen cycle including regionalization
• Participatory approach and transfer of results
• Guidance of policy and decision makers
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TU-BS research group:Field experiments”3+x“ approach –basic design
N fertilization treatmentsConventional Reduced Model‐based
ZeroN
Agronomical « x »‐(or high‐yielding) treatment
Agronomical « x »‐treatment
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Field experiments in Yixing (S Jiangsu)M. Hofmeier, T. Lan, H.Y. Tang, M. Roelcke, Y. Han, Z.C. Cai, R. Nieder
• “3+x” experiments on farmers‘ field sites for demonstration purposes
M. RoelckeM. Hofmeier
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Field experiments in Huai‘an (N Jiangsu)M. Hofmeier, T. Lan, H.Y. Tang, M. Roelcke, Y. Han, Z.C. Cai, R. Nieder
• “3+x” experiments on farmers‘ field sites for demonstration purposes
• Testing of stabilized N fertilizer with nitrification inhibitor (ALZON® SKWP) in exact field experiments
M. Hofmeier M. Hofmeier
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Yixing:Chinese milk vetch (Astragalus sinicus) instead of fallow over winter
Huai’an:Incorporation of chopped rice straw instead of straw removal (or burning)
M. HofmeierY. Han
“3+x” experiments: “x” treatmentsM. Hofmeier, T. Lan, H.Y. Tang, M. Roelcke, Y. Han, Z.C. Cai, R. Nieder
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To significantly reduce the N fertilizer consumption through the use of suitable management strategies and products.
Reducing nitrogen application rates Improving nitrogen use efficiency
How?
Measurement of N requirement Suppression of nitrification (inhibition: chemically (Entec), physically (Cultan)
Testing products and techniques in the NCPT. Hartmann, S.C. Yue, R. Schulz, X.P. Chen, T. Müller
Aim:
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Experiments in greenhouses in ShouguangT. Ren, L.Y. Wang, V. Römheld, U. Pfeffer, C. Nendel, Q. Chen
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Economic and environmental investigationsParticipative transfer of results
• Quantitative farm household surveys in Jiangsu ProvinceHuai’an: n=34 households; Yixing: n=43 households
• Standard Gross Margin (SGM) calculations status quo of farms’ production efficiencyCost-benefit-analysis
• Environmental assessmentsWTP-analysis for clean drinking waterAnalysis of agro-environmental decision-making influence of attitudes, knowledge, social networks
• Development of different policy scenarios tax on mineral N, subsidies for reduced N use, quota, etc.
• Participatory workshop with farmersSWOT-Analysis evaluate a framework for policy recommendations
D. Weber, X.P. Jia, R.F. Hu, J.K. Huang, H. Bergmann, R. Marggraf
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• Farmers’ field days in pilot counties
• Communicate the results to local level decision makers
• Round tables with other stakeholders
• Involvement of relevant Chinese institutions
• Forward recommendations to policy makers
• Final workshop with local government and ministerial officials
Participation and transferPolicy and decision maker guidance
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BMBF FKZ: 0330800A-F Sept. 01, 2008 – Dec. 31, 2011MOST grant no. 2007DFA30850
Thank You !
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