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How Long-Term Chemical Fertilization of Sloping Cropland Enhances Yield and Fertility without Compromising Coil Structure
Xu, Mingxiang1; Li, Qiang2; Bowker, Matthew3; Xu, MX (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dry Land Farming, 26 Xinong RD, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle
2017
Source PublicationPOLISH JOURNAL OF ENVIRONMENTAL STUDIES
ISSN1230-1485
description.correspondentemailxumx@nwsuaf.edu.cn
Volume26Issue:4Pages:1797-1807
AbstractWe studied the effects of the long-term (17 years) application of different chemical fertilizer regimes on soil N and its inorganic fractions in relation to the soil physical properties in a sloping cropland in the hilly Loess Plateau. Seven treatments comprised of two factors were arranged within a randomized complete block design. As expected, crop yield increased 2-4-fold, but soil structure did not degrade. Under long-term fertilization, the portion of the small aggregates (<2 mm) and sand content were significantly decreased while the large aggregates (>2 mm) and the silt content increased by 276% and 7.4%, respectively, as compared with those in areas without fertilization. Moreover, the various continuous chemical fertilization treatments increased SOC content by 12.9% and total N by 12.4%, on average, compared with unfertilized plots. The SOC, total N, and shoot C, shoot N had close relationships with the large aggregates (>2 mm) and the clay content. The results suggest that, in this setting, the long-term addition of both N and P may sustain soil quality of an infertile sloping cropland in this region, compared to agriculture without fertilizer or applications of N alone.
KeywordSoil Nitrogen Fractions Physical Properties Soil Organic Carbon Soil Microbial Biomass Carbon Optimal Fertilizer Treatment
Subject AreaEnvironmental Sciences & Ecology
DOI10.15244/pjoes/69031
URL查看原文
Indexed BySCI
Publication PlaceOLSZTYN 5
Language英语
PublisherHARD
Funding OrganizationSpecial Program for Basic Research of the Ministry of Science and Technology, China [2014FY210100]; Key Research Program of the Chinese Academy of Sciences [KJZD-EW-TZ-G10]; National Natural Science Foundation of China [41171422] ; Special Program for Basic Research of the Ministry of Science and Technology, China [2014FY210100]; Key Research Program of the Chinese Academy of Sciences [KJZD-EW-TZ-G10]; National Natural Science Foundation of China [41171422]
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Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8084
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorXu, MX (reprint author), Northwest A&F Univ, State Key Lab Soil Eros & Dry Land Farming, 26 Xinong RD, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dry Land Farming, 26 Xinong RD, Yangling 712100, Shaanxi, Peoples R China
2.Yulin Univ, Coll Life Sci, 4 Chongwen RD, Yulin 719000, Shaanxi, Peoples R China
3.No Arizona Univ, Sch Forestry, Flagstaff, AZ 86011 USA
Recommended Citation
GB/T 7714
Xu, Mingxiang,Li, Qiang,Bowker, Matthew,et al. How Long-Term Chemical Fertilization of Sloping Cropland Enhances Yield and Fertility without Compromising Coil Structure[J]. POLISH JOURNAL OF ENVIRONMENTAL STUDIES,2017,26(4):1797-1807.
APA Xu, Mingxiang,Li, Qiang,Bowker, Matthew,&Xu, MX .(2017).How Long-Term Chemical Fertilization of Sloping Cropland Enhances Yield and Fertility without Compromising Coil Structure.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,26(4),1797-1807.
MLA Xu, Mingxiang,et al."How Long-Term Chemical Fertilization of Sloping Cropland Enhances Yield and Fertility without Compromising Coil Structure".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 26.4(2017):1797-1807.
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