| 小麦-玉米轮作系统下长期施钾对作物产量、钾素利用率和钾素平衡的影响 |
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| 引用本文： | ZHANG Hui-Min,YANG Xue-Yun,HE Xin-Hu,XU Ming-Gang,HUANG Shao-Min,LIU Hu,WANG Bo-Ren. 小麦-玉米轮作系统下长期施钾对作物产量、钾素利用率和钾素平衡的影响[J]. 土壤圈, 2011, 21(2): 154-163 |
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| 作者姓名： | ZHANG Hui-Min YANG Xue-Yun HE Xin-Hu XU Ming-Gang HUANG Shao-Min LIU Hu WANG Bo-Ren |
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| 作者单位： | ZHANG Hui-Min,XU Ming-Gang,WANG Bo-Ren(Key Laboratory of Crop Nutrition and Fertilization, Ministry of Agriculture of China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081,China);YANG Xue-Yun(College of Resource and Environment, Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi 712100,China);HE Xin-Hua(Key Laboratory of Crop Nutrition and Fertilization, Ministry of Agriculture of China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081,China; Centre for Ecosystem Management, School of Nat);HUANG Shao-Min(Institute of Plant Nutrition and Agricultural Resources, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002,China);LIU Hua(Institute of Soils, Fertilizers and Water-saving in Agriculture, Xinjiang Academy of Agricultural Sciences, Urümgi, Xinjiang 830091,China) |
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| 基金项目： | Supported by the National Basic Research Program (973 program) of China (Nos. 2011CB100501 and 2007CB309108); the National Natural Science Foundation of China (No. 41071200) |
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| 摘 要： | Sustainable potassium (K) management at different soil sites requires understanding the relationships between crop productivity and long-term K fertilizations on a regional or national scale.We analyzed responses of grain yield of wheat (Triticum aestivum L.) and maize (Zea mays L.),K efficiency,and partial balance (difference between K input through fertilizer and K output in the aboveground biomass) during 15-(1990-2005) or 18-year (1990-2008) K fertilizations at five distinctive agroecological zones across China.Compared to the inorganic nitrogen (N) and phosphorus (P) fertilization,the inorganic NPK fertilization significantly increased grain yields of wheat (21%) and maize (16%-72%) at Qiyang and Changping,where soils have low exchangeable and non-exchangeable K contents,but not at rmqi,Yangling and Zhengzhou,where soils have a high exchangeable and non-exchangeable K and/or low N/K ratio in crop plants.Compared to the inorganic NPK fertilization,the inorganic NPK (30% N) and organic manure (70% N) fertilization (NPKM) increased grain yields of wheat (14%-40%) and maize (9%-61%) at four sites,but not at Zhengzhou.For a productivity of wheat at 2-5 t ha-1 or maize at 3-6 t ha-1,13-26 or 9-17 kg K ha-1 were required to produce 1.0 t wheat or maize.The NP fertilization resulted in the lowest negative partial K balance and accumulated 52 kg K ha-1 year-1 less than the NPK fertilization,which accumulated 28 kg ha-1 year-1 less K than the NPKM fertilization.A re-evaluation of the site-specific fertilization effects on N/K ratio in crop plants and soil K accumulation under current NPK and NPKM fertilization is urgently needed to increase both crop yield and K use efficiency at different agroecological zones across China.
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| 关 键 词： | exchangeable K internal K use efficiency K harvest index K uptake non-exchangeable K |
Effect of long-term potassium fertilization on crop yield and potassium effciency and balance under wheat-maize rotation in China |
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| ZHANG Hui-Min,YANG Xue-Yun,HE Xin-Hu,XU Ming-Gang,HUANG Shao-Min,LIU Hua and WANG Bo-Ren. Effect of long-term potassium fertilization on crop yield and potassium effciency and balance under wheat-maize rotation in China[J]. Pedosphere, 2011, 21(2): 154-163 |
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| Authors: | ZHANG Hui-Min YANG Xue-Yun HE Xin-Hu XU Ming-Gang HUANG Shao-Min LIU Hua WANG Bo-Ren |
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| Affiliation: | Key Laboratory of Crop Nutrition and Fertilization, Ministry of Agriculture of China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081 (China);College of Resource and Environment, Northwest Sci-Tech University of Agriculture and Forestry, Yangling, Shaanxi 712100 (China);Key Laboratory of Crop Nutrition and Fertilization, Ministry of Agriculture of China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081 (China); Centre for Ecosystem Management, School of Natural Resources, Edith Cowan University, Joondalup, WA 6027 (Australia); State Centre of Excellence for Ecohydrology and School of Plant Biology, University of Western Australia, Crawley, WA 6009 (Australia);Key Laboratory of Crop Nutrition and Fertilization, Ministry of Agriculture of China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081 (China);Institute of Plant Nutrition and Agricultural Resources, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002 (China);Institute of Soils, Fertilizers and Water-saving in Agriculture, Xinjiang Academy of Agricultural Sciences, ürümqi, Xinjiang 830091 (China);Key Laboratory of Crop Nutrition and Fertilization, Ministry of Agriculture of China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081 (China) |
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| Abstract: | Sustainable potassium (K) management at different soil sites requires understanding the relationships between crop productivity and long-term K fertilizations on a regional or national scale.We analyzed responses of grain yield of wheat (Triticum aestivum L.) and maize (Zea mays L.),K efficiency,and partial balance (difference between K input through fertilizer and K output in the aboveground biomass) during 15-(1990-2005) or 18-year (1990-2008) K fertilizations at five distinctive agroecological zones acro... |
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| Keywords: | exchangeable K internal K use efficiency K harvest index K uptake non-exchangeable K |
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