Effects of Long-Term Fertilization on the Distribution of Carbon, Nitrogen and Phosphorus in Water-Stable Aggregates in Paddy Soil

doi:10.1016/S1671-2927(11)60194-6

Journal of Integrative Agriculture ›› 2011, Vol. 10 ›› Issue (12): 1932-1940.DOI: 10.1016/S1671-2927(11)60194-6

Effects of Long-Term Fertilization on the Distribution of Carbon, Nitrogen and Phosphorus in Water-Stable Aggregates in Paddy Soil

WANG Wei, CHEN Wei-cai, WANG Kai-rong, XIE Xiao-li, YIN Chun-mei , CHEN An-lei

1. Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences,Changsha 410125, P.R.China
2. Institute of Agriculture Ecological and Environmental Health, Qingdao Agricultural University, Qingdao 266109, P.R.China
3. Graduate University of Chinese Academy of Sciences, Beijing 100049, P.R.China

收稿日期:2010-11-02 出版日期:2011-12-01 发布日期:2011-12-19
通讯作者: Correspondence XIE Xiao-li, Tel: +86-731-84615230, Fax: +86-731-84612685, E-mail: xlx@isa.ac.cn
基金资助:
This study was funded by the Knowledge Innovativation Program of the Chinese Academy of Sciences (KZCX2- YW-423) and the National Basic Research Program of China (2005CB121106).

Effects of Long-Term Fertilization on the Distribution of Carbon, Nitrogen and Phosphorus in Water-Stable Aggregates in Paddy Soil

WANG Wei, CHEN Wei-cai, WANG Kai-rong, XIE Xiao-li, YIN Chun-mei , CHEN An-lei

1. Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences,Changsha 410125, P.R.China
2. Institute of Agriculture Ecological and Environmental Health, Qingdao Agricultural University, Qingdao 266109, P.R.China
3. Graduate University of Chinese Academy of Sciences, Beijing 100049, P.R.China

Received:2010-11-02 Online:2011-12-01 Published:2011-12-19
Contact: Correspondence XIE Xiao-li, Tel: +86-731-84615230, Fax: +86-731-84612685, E-mail: xlx@isa.ac.cn
Supported by:
This study was funded by the Knowledge Innovativation Program of the Chinese Academy of Sciences (KZCX2- YW-423) and the National Basic Research Program of China (2005CB121106).

摘要/Abstract

摘要： We investigated the size distribution of water-stable aggregates and the soil carbon, nitrogen and phosphorus concentration
over aggregate size fractions based on a long-term (1990-2006) fertilization experiment in a reddish paddy soil. The results
showed that the largest water-stable aggregate (WSA) (>5 mm) and the smallest WSA (<0.25 mm) took up the first largest
proportion (38.3%) and the second largest proportion (23.3%), respectively. Application of organic materials increased
the proportion of the large WSA (>2 mm) and decreased the proportion of the small WSA (<1 mm), resulting in an increase
in the mean weight diameter of WSA, whereas application of chemical fertilizer had little effect. Application of organic
materials, especially combined with chemical fertilizers, increased total carbon, nitrogen and phosphorus concentrations
in all sizes of WSA, and total carbon, nitrogen and phosphorus were prone to concentrate in the large WSA. Further more,
application of organic materials improved the supply effectiveness of available phosphorus, whereas had little influence
on the labile carbon in WSA. Application of chemical fertilizers improved concentrations of total and available phosphorus
in all sizes of WSA, whereas had little influence on total carbon and nitrogen contents. Economical fertilization model
maintained the soil fertility when compared with full dose of chemical fertilizers, indicating that using organic materials
could reduce chemical fertilizers by about one third.We investigated the size distribution of water-stable aggregates and the soil carbon, nitrogen and phosphorus concentration over aggregate size fractions based on a long-term (1990-2006) fertilization experiment in a reddish paddy soil. The results showed that the largest water-stable aggregate (WSA) (>5 mm) and the smallest WSA (<0.25 mm) took up the first largest proportion (38.3%) and the second largest proportion (23.3%), respectively. Application of organic materials increased the proportion of the large WSA (>2 mm) and decreased the proportion of the small WSA (<1 mm), resulting in an increase in the mean weight diameter of WSA, whereas application of chemical fertilizer had little effect. Application of organic materials, especially combined with chemical fertilizers, increased total carbon, nitrogen and phosphorus concentrations in all sizes of WSA, and total carbon, nitrogen and phosphorus were prone to concentrate in the large WSA. Further more, application of organic materials improved the supply effectiveness of available phosphorus, whereas had little influence on the labile carbon in WSA. Application of chemical fertilizers improved concentrations of total and available phosphorus in all sizes of WSA, whereas had little influence on total carbon and nitrogen contents. Economical fertilization model maintained the soil fertility when compared with full dose of chemical fertilizers, indicating that using organic materials could reduce chemical fertilizers by about one third.

关键词: distribution, fertilization, nutrient, water-stable aggregate

Abstract: We investigated the size distribution of water-stable aggregates and the soil carbon, nitrogen and phosphorus concentration
over aggregate size fractions based on a long-term (1990-2006) fertilization experiment in a reddish paddy soil. The results
showed that the largest water-stable aggregate (WSA) (>5 mm) and the smallest WSA (<0.25 mm) took up the first largest
proportion (38.3%) and the second largest proportion (23.3%), respectively. Application of organic materials increased
the proportion of the large WSA (>2 mm) and decreased the proportion of the small WSA (<1 mm), resulting in an increase
in the mean weight diameter of WSA, whereas application of chemical fertilizer had little effect. Application of organic
materials, especially combined with chemical fertilizers, increased total carbon, nitrogen and phosphorus concentrations
in all sizes of WSA, and total carbon, nitrogen and phosphorus were prone to concentrate in the large WSA. Further more,
application of organic materials improved the supply effectiveness of available phosphorus, whereas had little influence
on the labile carbon in WSA. Application of chemical fertilizers improved concentrations of total and available phosphorus
in all sizes of WSA, whereas had little influence on total carbon and nitrogen contents. Economical fertilization model
maintained the soil fertility when compared with full dose of chemical fertilizers, indicating that using organic materials
could reduce chemical fertilizers by about one third.We investigated the size distribution of water-stable aggregates and the soil carbon, nitrogen and phosphorus concentration over aggregate size fractions based on a long-term (1990-2006) fertilization experiment in a reddish paddy soil. The results showed that the largest water-stable aggregate (WSA) (>5 mm) and the smallest WSA (<0.25 mm) took up the first largest proportion (38.3%) and the second largest proportion (23.3%), respectively. Application of organic materials increased the proportion of the large WSA (>2 mm) and decreased the proportion of the small WSA (<1 mm), resulting in an increase in the mean weight diameter of WSA, whereas application of chemical fertilizer had little effect. Application of organic materials, especially combined with chemical fertilizers, increased total carbon, nitrogen and phosphorus concentrations in all sizes of WSA, and total carbon, nitrogen and phosphorus were prone to concentrate in the large WSA. Further more, application of organic materials improved the supply effectiveness of available phosphorus, whereas had little influence on the labile carbon in WSA. Application of chemical fertilizers improved concentrations of total and available phosphorus in all sizes of WSA, whereas had little influence on total carbon and nitrogen contents. Economical fertilization model maintained the soil fertility when compared with full dose of chemical fertilizers, indicating that using organic materials could reduce chemical fertilizers by about one third.

Key words: distribution, fertilization, nutrient, water-stable aggregate

WANG Wei, CHEN Wei-cai, WANG Kai-rong, XIE Xiao-li, YIN Chun-mei , CHEN An-lei. Effects of Long-Term Fertilization on the Distribution of Carbon, Nitrogen and Phosphorus in Water-Stable Aggregates in Paddy Soil[J]. Journal of Integrative Agriculture, 2011, 10(12): 1932-1940.

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Effects of Long-Term Fertilization on the Distribution of Carbon, Nitrogen and Phosphorus in Water-Stable Aggregates in Paddy Soil

Effects of Long-Term Fertilization on the Distribution of Carbon, Nitrogen and Phosphorus in Water-Stable Aggregates in Paddy Soil

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