Nitrate Leaching from Maize Intercropping Systems with N Fertilizer Over-Dose

查看全文 作　　者：NIE Sheng-[1]wei;AEgfinya [3]Eneji;CHEN Yuan-[1]quan;SUI [1]Peng;HUANG Jian-[1]xiong;HUANGShao-[2]min

机构地区：[1]Research Center of Circular Agriculture, China Agricultural University, Beijing 100193, P.R.China;[2]Key Field Scientific Observation Station of Zhengzhou Fluvo-Aquic Soils Ecology Environment, Ministry of Agriculture~Institute of Plant Nutrition, Resources and Environment, Henan Academy of Agricuhural Science, Zhengzhou 450002, P.R.China;[3]Soil Science Research Center, University of Calabar, PMB 1115, Nigeria

出　　处：《Journal of Integrative Agriculture》索引2012年第11卷第9期,共11页

基　　金：the Key Technologies R&D Program of China during the 11th Five-Year Plan period (2007BAD89B01);the Key Technologies R&D Program of China during the 12th Five-Year Plan period(2011BAD16B15);the Project of Collaboration between Henan Province and Chinese Academy of Agricultural Sciences Program (102106000034) 摘　　要：A 2-yr field experiment was conducted on a calcareous alluvial soil with four summer maize intercropping systems at Shangzhuang Experiment Station (116.3°E, 39.9°N) in the North China Plain. The objective was to determine nitrate leaching from intercropping systems involving maize (Zea mays L.): sole maize (CK), maize + soybean (CST), maize + groundnut (CGT), maize + ryegrass (CHM), and maize+ alfalfa (CMX). Intercropping greatly reduced nitrate accumulation in the 100-200 cm soil layers compared with maize monoculture. Nitrate accumulation under intercropping systems decreased significantly at the 140-200 cm soil depth; the accumulation varied in the order CK>CST>CMX>CHM>CGT. However, compared to the CK treatment, nitrate leaching losses during the maize growing period were reduced by 20.9- 174.8 (CGT), 35.2-130.8 (CHM), 60.4-122.0 (CMX), and 30.6-82.4 kg ha-1 (CST). The results also suggested that intercropping is an effective way to reduce nitrogen leaching in fields with N fertilizer over-dose. 关键词：硝酸盐积累间作系统氮素淋失夏玉米超剂量氮肥施用量 CGT 田间试验

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Nitrate Leaching from Maize Intercropping Systems with N Fertilizer Over-Dose

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