| 黑土不同耕层厚度对玉米根系形态空间分布及其产量的影响 |
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| 引用本文： | 杨越,李蕊,李彦生,赵月,金剑,隋跃宇,张兴义,刘晓冰.黑土不同耕层厚度对玉米根系形态空间分布及其产量的影响[J].玉米科学,2019,27(1):97-103. |
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| 作者姓名： | 杨越 李蕊 李彦生 赵月 金剑 隋跃宇 张兴义 刘晓冰 |
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| 作者单位： | 东北农业大学资源与环境学院, 哈尔滨 150030;中国科学院东北地理与农业生态研究所/黑土区农业生态重点实验室, 哈尔滨 150081,东北农业大学资源与环境学院, 哈尔滨 150030;中国科学院东北地理与农业生态研究所/黑土区农业生态重点实验室, 哈尔滨 150081,中国科学院东北地理与农业生态研究所/黑土区农业生态重点实验室, 哈尔滨 150081,东北农业大学资源与环境学院, 哈尔滨 150030;中国科学院东北地理与农业生态研究所/黑土区农业生态重点实验室, 哈尔滨 150081,中国科学院东北地理与农业生态研究所/黑土区农业生态重点实验室, 哈尔滨 150081,中国科学院东北地理与农业生态研究所/黑土区农业生态重点实验室, 哈尔滨 150081,中国科学院东北地理与农业生态研究所/黑土区农业生态重点实验室, 哈尔滨 150081,东北农业大学资源与环境学院, 哈尔滨 150030 |
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| 基金项目： | 国家自然科学基金（41671274）；科技部支撑项目（2014BAD11B01-A01）；黑龙江省自然科学基金重点项目（ZD2016009） |
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| 摘 要： | 在重建不同厚度黑土层的定位模拟试验区开展免耕玉米大豆轮作试验,设3个黑土耕层厚度(10、20和30 cm),探究不同耕层厚度对玉米生育期间的根系形态及其产量影响。研究表明,玉米产量对不同耕层厚度反应敏感,30 cm耕层厚度处理玉米产量最高,比20 cm和10 cm耕层厚度显著高12.5%和24.1%,且玉米根系分布对耕层厚度响应差异明显。30 cm耕层厚度显著影响玉米0～10 cm土层根重密度,对10～30 cm土层根重密度及不同土层根长密度和比根长影响不明显。
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| 关 键 词： | 玉米 耕层厚度 根系生长 产量 |
Effects of Different Depths of Topsoil on Root Spatial Distribution and Yield of Maize |
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| YANG Yue,LI Rui,LI Yan-sheng,ZHAO Yue,JIN Jian,SUI Yue-yu,ZHANG Xing-yi and LIU Xiao-bing.Effects of Different Depths of Topsoil on Root Spatial Distribution and Yield of Maize[J].Journal of Maize Sciences,2019,27(1):97-103. |
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| Authors: | YANG Yue LI Rui LI Yan-sheng ZHAO Yue JIN Jian SUI Yue-yu ZHANG Xing-yi and LIU Xiao-bing |
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| Institution: | College of Resources and Environment, Northeast Agricultural University, Harbin 150030;Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China,College of Resources and Environment, Northeast Agricultural University, Harbin 150030;Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China,Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China,College of Resources and Environment, Northeast Agricultural University, Harbin 150030;Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China,Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China,Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China,Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China and College of Resources and Environment, Northeast Agricultural University, Harbin 150030 |
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| Abstract: | In a simulation experiment of reconstruction topsoil of different depths, the effects of different depths of topsoil on maize root morphology during growth period were investigated under no-tillage maize-soybean rotation condition, and maize yield was also measured. The simulated topsoil included three depths, 10 cm, 20 cm and 30 cm. The results showed that maize yield was susceptible to topsoil depths, and the highest yield was obtained at 30 cm depth topsoil, which was 12.5% and 24.1% higher than that at 20 cm and 10 cm depth topsoil. Maize root mor-phology varied significantly among topsoil depths. In addition, the 30 cm depth topsoil significantly altered the root weight density at the top 0-10 cm of soil layer, while it had no significant effects on the root weight density in 10-30 cm of soil layer. However, the 30 cm depth topsoil had not significant effects on the root length density and the ratio of root length/weight in any soil layer. |
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| Keywords: | Maize Depth of topsoil Root growth Yield |
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