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Special Issue:
农业生态环境-肥料及施用合辑Agro-ecosystem & Environment—Fertilizer
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Change of soil productivity in three different soils after long-term field fertilization treatments |
| LIU Kai-lou1, 2, HAN Tian-fu1 , HUANG Jing1 , ZHANG Shui-qing3 , GAO Hong-jun4 , ZHANG Lu1 , Asad SHAH1 , HUANG Shao-min3 , ZHU Ping4 , GAO Su-duan5 , MA Chang-bao6 , XUE Yan-dong6 , ZHANG Hui-min1 |
1 National Engineering Laboratory for Improving Quality of Arable Land/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China
2 National Engineering and Technology Research Center for Red Soil Improvement/Jiangxi Institute of Red Soil, Nanchang 331717, P.R.China
3 Institute of Plant Nutrition and Environmental Resources Science, Henan Academy of Agricultural Sciences, Zhengzhou 450002, P.R.China
4 Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033, P.R.China
5 San Joaquin Valley Agricultural Sciences Center, USDA Agricultural Research Service, CA 93648-9757, USA
6 Cultivated Land Quality Monitoring and Protection Center, Ministry of of Agriculture and Rural Affairs, Beijing 100125, P.R.China |
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Abstract Soil productivity (SP) without external fertilization influence is an important indicator for the capacity of a soil to support crop yield. However, there have been difficulties in estimating values of SPs for soils after various long-term field treatments because the treatment without external fertilization is used but is depleted in soil nutrients, leading to erroneous estimation. The objectives of this study were to estimate the change of SP across different cropping seasons using pot experiments, and to evaluate the steady SP value (which is defined by the basal contribution of soil itself to crop yield) after various longterm fertilization treatments in soils at different geographical locations. The pot experiments were conducted in Jinxian of Jiangxi Province with paddy soil, Zhengzhou of Henan Province with fluvo-aquic soil, and Gongzhuling of Jilin Province with black soils, China. Soils were collected after long-term field fertilization treatments of no fertilizer (control; CK-F), chemical fertilizer (NPK-F), and combined chemical fertilizer with manure (NPKM-F). The soils received either no fertilizer (F0) or chemical fertilizer (F1) for 3–6 cropping seasons in pots, which include CK-P (control; no fertilizer from long-term field experiments for pot experiments), NPK-P (chemical fertilizer from long-term field experiments for pot experiments), and NPKM-P (combined chemical and organic fertilizers from long-term field experiments for pot experiments). The yield data were used to calculate SP values. The initial SP values were high, but decreased rapidly until a relatively steady SP was achieved at or after about three cropping seasons for paddy and fluvo-aquic soils. The steady SP values in the third cropping season from CK-P, NPK-P, and NPKM-P treatments were 37.7, 44.1, and 50.0% in the paddy soil, 34.2, 38.1, and 50.0% in the fluvo-aquic soil, with the highest value observed in the NPKM-P treatment for all soils. However, further research is required in the black soils to incorporate more than three cropping seasons. The partial least squares path mode (PLS-PM) showed that total N (nitrogen) and C/N ratio (the ratio of soil organic carbon and total N) had positive effects on the steady SP for all three soils. These findings confirm the significance of the incorporation of manure for attaining high soil productivity. Regulation of the soil C/N ratio was the other main factor for steady SP through fertilization management.
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Received: 30 November 2018
Accepted:
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| Fund: This research was supported by the National Key Research and Development Program of China (2016YFD0300901 and 2016YFD0200101), the Fundamental Research Funds for Central Non-profit Scientific Institution of China (161032019035 and 161032019020), and the National Basic Research Program of China (973 Program) (2011CB100501). |
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Corresponding Authors:
Correspondence
ZHANG Hui-min, Tel: +86-10-82105039, E-mail: zhanghuimin@
caas.cn
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| About author: LIU Kai-lou, E-mail: liukailou@163.com; |
Cite this article:
LIU Kai-lou, HAN Tian-fu, HUANG Jing, ZHANG Shui-qing, GAO Hong-jun, ZHANG Lu, Asad SHAH, HUANG Shao-min, ZHU Ping, GAO Su-duan, MA Chang-bao, XUE Yan-dong, ZHANG Hui-min.
2020.
Change of soil productivity in three different soils after long-term field fertilization treatments . Journal of Integrative Agriculture, 19(3): 848-858.
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