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当前位置: 首页 > 文章 > Long-term organic and inorganic fertilizations enhanced basic soil productivity in a fluvo-aquic soil 农业科学学报 (英文) 2015,14 (12)
Position: Home > Articles > Long-term organic and inorganic fertilizations enhanced basic soil productivity in a fluvo-aquic soil Journal of Integrative Agriculture 2015,14 (12)

Long-term organic and inorganic fertilizations enhanced basic soil productivity in a fluvo-aquic soil

作  者：
Zha Yan;Wu Xue-ping;Gong Fu-fei;Xu Ming-gang;Zhang Hui-min;Chen Li-ming;Huang Shao-min;Cai Dian-xiong
单  位：
Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Engn Lab Improving Qual Arable Land, Beijing 100081, Peoples R China;Ohio State Univ, Ohio Agr Res & Dev Ctr, Sch Environm & Nat Resources, Wooster, OH 44691 USA;Henan Acad Agr Sci, Inst Plant Nutr Resources & Environm, Zhengzhou 450002, Peoples R China
关键词：
soil organic carbon;basic soil productivity;long-term fertilization;DSSAT model;fluvo-aquic soil;wheat-maize rotation
摘  要：
The improvement of soil productivity depends on a rational input of water and nutrients, optimal field management, and the increase of basic soil productivity (BSP). In this study, BSP is defined as the productive capacity of a farmland soil with its own physical and chemical properties for a specific crop season under local field management. Based on 19-yr data of the long-term agronomic experiments (1989-2008) on a fluvo-aquic soil in Zhengzhou, Henan Province, China, the decision support system for agrotechnology transfer (DSSAT ver. 4.0) crop growth model was used to simulate yields by BSP of winter wheat (Triticum aestivium L.) and summer maize (Zea mays L.) to examine the relationship between BSP and soil organic carbon (SOC) under long-term fertilization. Five treatments were included: (1) no fertilization (control), (2) nitrogen, phosphorus and potassium fertilizers (NPK), (3) NPK plus manure (NPKM), (4) 1.5 times of NPKM (1.5NPKM), and (5) NPK plus straw (NPKS). After 19 yr of treatments, the SOC stock increased 16.7, 44.2, 69.9, and 25.2% under the NPK, NPKM, 1.5NPKM, and NPKS, respectively, compared to the initial value. Among various nutrient factors affecting contribution percentage of BSP to winter wheat and summer maize, SOC was a major affecting factor for BSP in the fluvo-aquic soil. There were significant positive correlations between SOC stock and yields by BSP of winter wheat and summer maize (P<0.01), and yields by BSP of winter wheat and summer maize increased 154 and 132 kg ha(-1) when SOC stock increased It C ha(-1). Thus, increased SOC accumulation is a crucial way for increasing BSP in fluvo-aquic soil. The manure or straw combined application with chemical fertilizers significantly enhanced BSP compared to the application of chemical fertilizers alone.
作  者：
ZHA Yan;WU Xue-ping;GONG Fu-fei;XU Ming-gang;ZHANG Hui-min;CHEN Li-ming;HUANG Shao-min;CAI Dian-xiong;National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences;School of Environment and Natural Resources, The Ohio State University,Ohio Agricultural Research and Development Center;Institute of Plant Nutrition, Resources and Environment, Henan Academy of Agricultural Sciences;
关键词：
soil organic carbon;;basic soil productivity;;long-term fertilization;;DSSAT model;;fluvo-aquic soil;;wheat-maize rotation
摘  要：
The improvement of soil productivity depends on a rational input of water and nutrients, optimal field management, and the increase of basic soil productivity(BSP). In this study, BSP is defined as the productive capacity of a farmland soil with its own physical and chemical properties for a specific crop season under local field management. Based on 19-yr data of the long-term agronomic experiments(1989–2008) on a fluvo-aquic soil in Zhengzhou, Henan Province, China, the decision support system for agrotechnology transfer(DSSAT ver. 4.0) crop growth model was used to simulate yields by BSP of winter wheat(Triticum aestivium L.) and summer maize(Zea mays L.) to examine the relationship between BSP and soil organic carbon(SOC) under long-term fertilization. Five treatments were included:(1) no fertilization(control),(2) nitrogen, phosphorus and potassium fertilizers(NPK),(3) NPK plus manure(NPKM),(4) 1.5 times of NPKM(1.5NPKM), and(5) NPK plus straw(NPKS). After 19 yr of treatments, the SOC stock increased 16.7, 44.2, 69.9, and 25.2% under the NPK, NPKM, 1.5NPKM, and NPKS, respectively, compared to the initial value. Among various nutrient factors affecting contribution percentage of BSP to winter wheat and summer maize, SOC was a major affecting factor for BSP in the fluvo-aquic soil. There were significant positive correlations between SOC stock and yields by BSP of winter wheat and summer maize(P<0.01), and yields by BSP of winter wheat and summer maize increased 154 and 132 kg ha~(–1) when SOC stock increased 1 t C ha~(–1). Thus, increased SOC accumulation is a crucial way for increasing BSP in fluvo-aquic soil. The manure or straw combined application with chemical fertilizers significantly enhanced BSP compared to the application of chemical fertilizers alone.

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