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COMPARATIVE STUDY ON RUNOFF N, P FROM ORGANIC AND CONVENTIONAL RICE-WHEAT ROTATION FIELD IN THE TAI LAKE REGION IN CHINA

Xi, Yunguan (2014) COMPARATIVE STUDY ON RUNOFF N, P FROM ORGANIC AND CONVENTIONAL RICE-WHEAT ROTATION FIELD IN THE TAI LAKE REGION IN CHINA. In: Rahmann, G. and Aksoy , U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 1, Thuenen Report, no. 20, pp. 129-132.

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Summary

The runoff N, P from organic and conventional rice-wheat rotation field in terms of equal N input was studied through field plot test in Tai lake region. The results showed that in the rice-wheat rotation field in Tai lake region the runoff TN from organic and conventional field was 56.15kg/hm2 and 77.90kg/hm2 respectively, 27.9% less from organic field; for the runoff N coefficient, in organic field, rice season it’s 7.19% and wheat season 9.12%, in conventional field, rice season it’s 9.74% and wheat season 16.75%; the runoff TP from organic and conventional field was 2.38 kg/hm2 and 1.03 kg/hm2, respectively, 131.06 % more from organic field; for the runoff P coefficient, in organic field, rice season it’s 0.84 % and wheat season 0.14%, in conventional field, rice season it’s 1.1 % and wheat season 0.05 %. In rice field, NH4-N was the main form of runoff TN and in wheat field, NO3-N was the main form of runoff TN. Analysis suggested that more runoff P from organic field was because of more P input from organic fertilizer in case of equal N input in organic and conventional field.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Organic agriculture, Runoff N and P, Agriculture non-point pollution Comparative Study
Agrovoc keywords:
LanguageValueURI
English UNSPECIFIED
Subjects: Environmental aspects > Air and water emissions
Research affiliation: China
International Conferences > 2014: 18th IFOAM OWC Scientific Track: 4th ISOFAR Scientific Conference
ISBN:978-3-86576-128-6
DOI:10.3220/REP_20_1_2014
Deposited By: Xi, Associate Prof. Yunguan
ID Code:23637
Deposited On:27 Oct 2014 14:45
Last Modified:27 Oct 2014 14:45
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:urn:nbn:de:gbv:253-201407-dn053621-1

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