土地利用和初始含水量对琼东南黄色砖红壤水分入渗的影响
发布时间：2019-04-24 05:48
【摘要】：采用环刀法,测定了琼东南万宁兴隆地区典型黄色砖红壤上不同土地利用及不同初始含水量下的土壤入渗过程,分析对比了3种常用入渗模型的适宜性。结果表明,不同土地利用方式之间,胡椒园土壤初始入渗率、稳定入渗率和1 h累积入渗量等入渗指标均明显高于自然草地土壤和咖啡园土壤,入渗性能最佳;虽然自然草地的稳定入渗率和1 h累积入渗量等指标略高于咖啡园土壤,但二者整体入渗性能相差不大。造成上述入渗性能差异的原因与不同种植园对土壤改造程度不同而引起土壤质地变化有关。不同初始含水量对土壤入渗过程也有显著影响,随土壤初始含水量增加,初始入渗率、稳定入渗率和1 h累积入渗量等指标均呈下降趋势,表明土壤越湿润,土壤入渗性能也相应减弱。Kostiakov模型和Horton模型对不同土地利用和初始含水量下的土壤入渗过程拟合效果较好,可作为今后黄色砖红壤土壤入渗的适宜模型。本研究结果可为琼东南黄色砖红壤地区农业生产及相关灌溉策略制定提供参考。
[Abstract]:Soil infiltration process under different land use and different initial water content on typical yellow latosol in Wangning Xinglong area, southeast of Qiongnan was determined by circular knife method, and the suitability of three common infiltration models was analyzed and compared. The results showed that the initial infiltration rate, stable infiltration rate and 1 h cumulative infiltration rate of pepper garden soil were significantly higher than those of natural grassland soil and coffee garden soil, and the infiltration performance was the best among different land use patterns. Although the steady infiltration rate and 1 h cumulative infiltration rate of natural grassland were slightly higher than those of coffee garden soil, there was no significant difference in the overall infiltration performance between them. The difference of infiltration performance is related to the change of soil texture due to the different degree of soil modification in different plantations. With the increase of soil initial water content, the initial infiltration rate, stable infiltration rate and 1 h cumulative infiltration rate all showed a decreasing trend, indicating that the soil was wetter. Kostiakov model and Horton model had a good fitting effect on soil infiltration process under different land use and initial water content, which could be used as a suitable model for soil infiltration in yellow latosol red soil in the future. The results of this study can provide reference for agricultural production and irrigation strategy formulation in yellow latosol area of southeast Qiongnan.
【作者单位】： 中国热带农业科学院香料饮料研究所;农业部香辛饮料作物遗传资源利用重点实验室;海南省热带香辛饮料作物遗传改良与品质调控重点实验室;
【基金】：中央级公益性科研院所基本科研业务费专项“香草兰、胡椒、可可高效施肥技术研究与示范”(No.1630142017013)
【分类号】：S152.7
，
本文编号：2464155
[Abstract]:Soil infiltration process under different land use and different initial water content on typical yellow latosol in Wangning Xinglong area, southeast of Qiongnan was determined by circular knife method, and the suitability of three common infiltration models was analyzed and compared. The results showed that the initial infiltration rate, stable infiltration rate and 1 h cumulative infiltration rate of pepper garden soil were significantly higher than those of natural grassland soil and coffee garden soil, and the infiltration performance was the best among different land use patterns. Although the steady infiltration rate and 1 h cumulative infiltration rate of natural grassland were slightly higher than those of coffee garden soil, there was no significant difference in the overall infiltration performance between them. The difference of infiltration performance is related to the change of soil texture due to the different degree of soil modification in different plantations. With the increase of soil initial water content, the initial infiltration rate, stable infiltration rate and 1 h cumulative infiltration rate all showed a decreasing trend, indicating that the soil was wetter. Kostiakov model and Horton model had a good fitting effect on soil infiltration process under different land use and initial water content, which could be used as a suitable model for soil infiltration in yellow latosol red soil in the future. The results of this study can provide reference for agricultural production and irrigation strategy formulation in yellow latosol area of southeast Qiongnan.
【作者单位】： 中国热带农业科学院香料饮料研究所;农业部香辛饮料作物遗传资源利用重点实验室;海南省热带香辛饮料作物遗传改良与品质调控重点实验室;
【基金】：中央级公益性科研院所基本科研业务费专项“香草兰、胡椒、可可高效施肥技术研究与示范”(No.1630142017013)
【分类号】：S152.7
，
本文编号：2464155
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