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	Long-term effects of fertilizer managements on crop yields and organic carbon storage of a typical rice-wheat agroecosystem of China
	Shen, Ming-Xing; Yang, Lin-Zhang; Yao, Yue-Ming; Wu, Dong-Dong; Wang, Jianguo; Guo, Ruli; Yin, Shixue
刊名	BIOLOGY AND FERTILITY OF SOILS
	2007-10-01
卷号	44期号:1页码:187-200
关键词	long-term experiment rice-wheat system manure soil organic carbon nutrient balance
ISSN号	0178-2762
DOI	10.1007/s00374-007-0194-x
通讯作者	Yang, Lin-Zhang(lzyang@issas.ac.cn)
英文摘要	The present paper summarizes the results from a long-term experiment setup in 1980 in the Taihu Lake region, China, to address the yield sustainability, the dynamic changes of soil organic carbon (SOC) storage, and soil fertility in the rice-wheat ecosystem. Treatments in three replicates comprising manure-treated and chemical fertilizer-treated groups (two factors), each having seven sub-treatments of different combinations of inorganic nitrogen (N), phosphorus (P), potassium (K), and rice straw, were randomly distributed. Results showed that the treatments of manure (pig manure from 1980 to 1996 and oil rape cake thereafter) + N + P + K (MNPK) and chemical fertilizer + N + P + K (CNPK) produced the highest and the most stable yields for both rice and wheat within the respective fertilizer treatment group. Potassium fertilization was necessary for yield sustainability in the ecosystem. Treatments of straw (as rice straw) + N (CRN) and manure + straw + N (MRN) produced more stable yield of rice but less stable of wheat. It was therefore recommended that straw should be only incorporated during the rice season. SOC contents in all treatments showed increasing trends over the period, even in the control treatment. Predicted SOC in chemical fertilizer-treated plots (mostly yet attainable) ranged from 16 to 18 g C kg(-1), indicating the high carbon (C) sequestration potential of the soil as compared to the initial SOC. SOC in manure- or straw-treated plots ranged from 17 to 19 g C kg(-1), which had been attained roughly 10 years after the experiment was initiated. Nutrient balance sheet showed that there was P surplus in all P-treated plots and a steady increase in Olsen-P over a 24-year period in 0-15 cm soil, which contributed little to crop yield increases. It was therefore suggested that P fertilization rate should be decreased to 30-40 kg P ha(-1) year(-1). Comparison of yields among the treatments showed that wheat was more responsive to P fertilizer than rice. Thus P fertilizer should be preferably applied to wheat. Soil pH decrease was significant over the 24-year period and was not correlated with fertilizer treatments. The overall recommendation is to incorporate straw at 4,500 kg ha(-1) year(-1) during the rice season only, with additional 190 kg N ha(-1) year(-1), 30-40 kg P ha(-1) year(-1) mainly during the rice season, and 150-160 kg K ha(-1) year(-1). Further research on the unusual P supply capacity of the soil is needed.
收录类别	SCI
WOS关键词	TAIHU LAKE REGION ; SOIL FERTILITY ; PADDY SOILS ; PHOSPHORUS FRACTIONS ; LOWLAND RICE ; RIVER DELTA ; LAND-USE ; QUALITY ; NITROGEN ; SYSTEMS
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000249617700020
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558710
专题	南京土壤研究所
通讯作者	Yang, Lin-Zhang
作者单位	1.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Jiangsu Acad Agr Sci, Inst Agr Sci Taihu Lake District, Suzhou 215155, Peoples R China 3.Yangzhou Univ, Coll Environm Sci & Engn, Yangzhou 225009, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Shen, Ming-Xing,Yang, Lin-Zhang,Yao, Yue-Ming,et al. Long-term effects of fertilizer managements on crop yields and organic carbon storage of a typical rice-wheat agroecosystem of China[J]. BIOLOGY AND FERTILITY OF SOILS,2007,44(1):187-200.
APA	Shen, Ming-Xing.,Yang, Lin-Zhang.,Yao, Yue-Ming.,Wu, Dong-Dong.,Wang, Jianguo.,...&Yin, Shixue.(2007).Long-term effects of fertilizer managements on crop yields and organic carbon storage of a typical rice-wheat agroecosystem of China.BIOLOGY AND FERTILITY OF SOILS,44(1),187-200.
MLA	Shen, Ming-Xing,et al."Long-term effects of fertilizer managements on crop yields and organic carbon storage of a typical rice-wheat agroecosystem of China".BIOLOGY AND FERTILITY OF SOILS 44.1(2007):187-200.

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