| 北方地区土壤速效养分及容重对秸秆还田的响应 |
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| 引用本文： | 孙力扬,徐明岗,王晋峰,李建华,刘平,孙楠.北方地区土壤速效养分及容重对秸秆还田的响应[J].中国农学通报,2023,39(5):100-108. |
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| 作者姓名： | 孙力扬 徐明岗 王晋峰 李建华 刘平 孙楠 |
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| 作者单位： | 1. 山西农业大学资源环境学院;2. 山西农业大学生态环境产业技术研究院/土壤环境与养分资源山西省重点实验室;3. 中国农业科学院农业资源与农业区划研究所/农业农村部耕地质量监测与评价重点实验室 |
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| 基金项目： | 国家科技基础资源调查专项“典型农区耕地质量演替数据整编与深加工”(2021YF100500); 山西省科技合作交流专项“健康土壤评价与保育技术研究”(202104041101002) |
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| 摘 要： | 本研究旨在探明中国北方地区土壤速效养分及容重对秸秆还田的响应，选择秸秆还田为主要研究目标，通过设置“秸秆还田”、“理化性质”、“华北”、“东北”、“西北”等关键词在中国知网、万方等多个数据库中，筛选出60篇关于秸秆还田对作物产量和土壤改良影响效应和影响因素的文献。采用Meta分析法定量研究土壤速效养分和容重对秸秆还田的响应。结果表明：秸秆还田能够显著(P<0.05)提升土壤有机碳、碱解氮和速效钾的含量，一定程度上降低土壤容重。华北地区秸秆还田对土壤速效养分的提升效果显著优于东北和西北地区，而对西北地区容重降低效果低于华北和东北地区；中高量秸秆还田(5000～10000 kg/hm2和10000～15000 kg/hm2)能够显著提升土壤有机碳、碱解氮和速效钾的含量，低秸秆还田量(≤5000 kg/hm2)对土壤容重并无显著影响，而超高秸秆还田量(>15000 kg/hm2)则显著(P<0.05)降低了土壤容重；免耕相比旋耕、深耕、浅耕可以显著(P<0.05)提升土壤有机碳、碱...
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| 关 键 词： | 秸秆还田 速效养分 土壤容重 中国北方 Meta分析 |
| 收稿时间： | 2022-02-21 |
Response of Soil Available Nutrients and Bulk Density to Straw Returning in North China |
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| SUN Liyang,XU Minggang,WANG Jinfeng,LI Jianhua,LIU Ping,SUN Nan.Response of Soil Available Nutrients and Bulk Density to Straw Returning in North China[J].Chinese Agricultural Science Bulletin,2023,39(5):100-108. |
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| Authors: | SUN Liyang XU Minggang WANG Jinfeng LI Jianhua LIU Ping SUN Nan |
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| Abstract: | To explore the effects of straw returning on soil available nutrients and bulk density in north China, we set the keywords ‘straw returning’, ‘physical and chemical properties’, ‘north China’, ‘northeast China’ and ‘northwest China’ in databases such as CNKI and Wanfang. 60 literature about the effects of straw returning on crop yield and soil improvement and the influencing factors were screened. Meta-analysis was conducted to quantitatively study the response of soil available nutrients and bulk density to straw returning and the influencing factors. The results showed that straw returning could significantly (P<0.05) increase the content of soil organic carbon, alkali-hydrolyzable nitrogen and available potassium, and reduce soil bulk density to a certain extent. The improvement of soil available nutrients by straw returning in north China was significantly higher than that in northeast China and northwest China. The reduction effect on soil bulk density in northwest China was lower than that in north China and northeast China. Medium and high amounts of straw returning (5000-10000 kg/hm2 and 10000-15000 kg/hm2) could significantly increase the content of soil organic carbon, alkali-hydrolyzable nitrogen and available potassium. Low amount of straw returning (≤5000 kg/hm2) had no significant effect on soil bulk density, while ultra-high amount of straw returning (>15000 kg/hm2) significantly decreased soil bulk density (P<0.05). Compared with rotary tillage, deep tillage and shallow tillage, no tillage could significantly (P<0.05) increase the content of soil organic carbon, alkali-hydrolyzable nitrogen and available potassium. In addition, deep tillage could significantly (P<0.05) decrease soil bulk density. Both wheat and corn straw had significant effects on the improvement of soil bulk density and available nutrients, but there was no significant difference between the two kinds of straw. Returning medium and high amounts of straw to field combined with no tillage could significantly increase soil basic nutrients’ contents and improve soil physical and chemical properties, which is a reasonable way to promote soil fertility in north China. |
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| Keywords: | straw returning available nutrients soil bulk density north China Meta-analysis |
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