| 绿肥还田在稻作生态系统的效应分析及研究展望 |
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| 引用本文： | 王强盛,薄雨心,余坤龙,刘晓雪.绿肥还田在稻作生态系统的效应分析及研究展望[J].土壤,2021,53(2):243-249. |
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| 作者姓名： | 王强盛 薄雨心 余坤龙 刘晓雪 |
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| 作者单位： | 广西农业科学院农业资源与环境研究所,广西农业科学院农业资源与环境研究所,广西大学农学院,广西农业科学院经济作物研究所,广西农业科学院农业资源与环境研究所,广西大学农学院 |
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| 基金项目： | 国家自然科学基金项目（41661074）；广西“新世纪十百千人才工程”专项资金（2018221）；广西科技计划项目（桂科AA17204078-2、桂科AD18281089） |
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| 摘 要： | 绿肥种植利用是中国传统农业技术的精华,也是绿色生态循环农业发展的关键性举措,为中国粮食稳定和绿色增效发挥着十分重要的作用。水稻栽种之前的绿肥还田耕作模式就是将绿肥植物体直接耕翻于稻田中作为肥料或是将绿肥植物体沤堆成肥再施用于稻田土壤,这不仅能够培肥稻田土壤、增强土壤供肥能力和减少稻季化学肥料施用,而且能够减少稻田周年化学养分供给、减轻稻田营养物质流失、提高养分资源利用效率,是轻简种植、绿色高效的农作制度模式。本文概述了绿肥还田对稻田土壤质量、资源利用效率和温室气体排放等方面的影响,展望了绿肥在稻田资源利用中的潜力,为绿肥高效种植和合理还田提供参考。
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| 关 键 词： | 绿肥还田 粉垄稻田土壤 活性有机碳 碳库管理指数 |
| 收稿时间： | 2020/6/28 0:00:00 |
| 修稿时间： | 2020/9/18 0:00:00 |
Analysis and Research Prospect of Effect of Green Manure Returning on Rice Cropping Ecosystem |
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| WANG Qiangsheng,BO Yuxin,YU Kunlong,LIU Xiaoxue.Analysis and Research Prospect of Effect of Green Manure Returning on Rice Cropping Ecosystem[J].Soils,2021,53(2):243-249. |
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| Authors: | WANG Qiangsheng BO Yuxin YU Kunlong LIU Xiaoxue |
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| Institution: | Agricultural Resource and Environment Research Institute,Guangxi Academy of Agricultural Sciences,Agricultural Resource and Environment Research Institute,Guangxi Academy of Agricultural Sciences,Agricultural College,Guangxi University,Cash Crop Research Institute,Guangxi Academy of Agricultural Sciences,SNanningS,Agricultural Resource and Environment Research Institute,Guangxi Academy of Agricultural Sciences,Agricultural College,Guangxi University |
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| Abstract: | Green manure returning is an important means to affect soil organic matter in farmland. In order to explore the effect of green manure returning on soil labile organic carbon in paddy field, this paper rice was cultivated by conventional tillage and smash ridging, and four fertilization treatments were carried out no fertilizer, single chemical fertilizers, and the same fertility condition of single green manure with chemical fertilizer and double green manure with chemical fertilizers, and systematically carried out the research on the soil labile organic carbon in paddy field cultivated by smash ridging. TheSresultsSshowSthat: (1) The content of total organic carbon (TOC) was reduced by smash ridging. Increasing the amount of green manure returning to the field can improve soil TOC under smash ridging, and double green manure returning was increased by 25.6~ 60.1%, while single green manure was beneficial to the accumulation of TOC in each layer of the soil section. (2) The content of labile organic carbon in rice soil was increase by green manure returning, and green manure returning also improve the soil carbon sequestration level. With the increase of green manure could improve soil carbon pool management index (CPMI) of rice. The content of low, medium and high labile organic carbon in single green returning to smash ridging rice soil was increased by 28.4~47.9%, 37.3~49.9% and 30.1~49.6%, respectively, and double green manure returning rice soil was increased by 47.8~64.3%, 40.0~61.3% and 29.6~59.7% respectively. (3) The soil TOC and CPMI under smash ridging changed linearly with the growth stages at and after booting stage, and the correlation coefficient R2 was 0.999. With the increase of soil layer, the proportion of non-labile organic carbon in the smash ridging soil under the green manure returning to the field showed a slow linear decrease (R2 = 0.998~0.999), which had a very regular effect on the potential utilization efficiency of the vertical migration and change of soil labile organic carbon. Therefore, green manure returning to the field can effectively increase the soil organic carbon storage and the stability of labile organic carbon, which plays an important role in regulating soil carbon pool and improving soil quality. |
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| Keywords: | green manure returning to the field paddy field soil in smash ridging labile organic carbon carbon pool management index |
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