用微溶渗计测定土壤水分蒸发作为排水的函数

IF 1.6 4区 农林科学 Q2 AGRONOMY Italian Journal of Agrometeorology-Rivista Italiana Di Agrometeorologia Pub Date : 2023-01-29 DOI:10.36253/ijam-1538
D. F. Daniel, R. Dallacort, J. D. Barbieri, M. Carvalho, P. S. L. Freitas, R. C. Tieppo, William Fenner
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引用次数: 1

摘要

本研究的目的是测试两种模型和两种尺寸的微溶渗仪,以确定土壤水分蒸发作为单元底部排水去除水分的函数。该试验是在巴西马托格罗索州tangar da Serra的马托格罗索州立大学(UNEMAT)实验田进行的。土壤水分蒸发采用硬质PVC管制成的微溶仪进行测定,测试了两种型号和两种尺寸的微溶仪。四种微渗计处理分别为:直径100 mm不排水(ML100WD)、直径100 mm有排水(ML100D)、直径150 mm不排水(ML150WD)和直径150 mm有排水(ML150D)。微溶计安装在60毫米的灌溉叶片上,并与四种灌溉叶片尺寸(15、30、45和60毫米)的应用进行了比较。土壤水分蒸发量由微溶渗仪的质量变化量得到,并与称重溶渗仪测定的土壤水分蒸发量进行比较。使用描述性统计技术、均值检验和回归分析对获得的数据进行分析。土壤水分蒸发值在两种微渗计尺寸(直径100和150 mm)和两种型号(排水和不排水)之间存在显著差异。土壤水分蒸发受微渗计底部排水的影响。在相同微渗计尺寸和模式下,不同灌溉速率对土壤水分蒸发无显著影响。这两种模型和所测试的两种微渗蒸计尺寸均可用于土壤水分蒸发的量化,因为与称重渗蒸计所观测到的蒸发量相比,其测定系数较高。
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Use of microlysimeters to determine soil water evaporation as a function of drainage
The aim of this study was to test two models and two sizes of microlysimeters to determine soil water evaporation as a function of the removal of water by drainage at the bottom of the units. The experiment was conducted at the experimental field of the State University of Mato Grosso (UNEMAT) in Tangará da Serra, Mato Grosso, Brazil. Soil water evaporation was determined using microlysimeters constructed from rigid PVC tubes, of which two models and two sizes were tested. The four microlysimeter treatments were: 100 mm diameter without drainage (ML100WD), 100 mm diameter with drainage (ML100D), 150 mm diameter without drainage (ML150WD), and 150 mm diameter with drainage (ML150D). The microlysimeters were fitted to an irrigation blade of 60 mm and compared to applications with four irrigation blade sizes (15, 30, 45, and 60 mm). Water evaporation from the soil was obtained from the mass variation of the microlysimeters, and was then compared to the soil water evaporation determined using weighing lysimeters. The obtained data were analyzed using descriptive statistical techniques, tests of means, and regression analysis. The soil water evaporation values present significant differences between the two microlysimeter sizes (100 and 150 mm diameter) and the two models (with and without water drainage). Soil water evaporation is affected by the water drainage that occurs at the bottom of the microlysimeters. There was no difference in soil water evaporation between irrigation rates within the same microlysimeter size and model. The two models and the two microlysimeter sizes tested can be used for the quantification of soil water evaporation, due to the high determination coefficients observed when compared to the evaporation observed with the weighing lysimeters.
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来源期刊
CiteScore
2.10
自引率
8.30%
发文量
6
期刊介绍: Among the areas of specific interest of the journal there are: ecophysiology; phenology; plant growth, quality and quantity of production; plant pathology; entomology; welfare conditions of livestocks; soil physics and hydrology; micrometeorology; modeling, simulation and forecasting; remote sensing; territorial planning; geographical information systems and spatialization techniques; instrumentation to measure physical and biological quantities; data validation techniques, agroclimatology; agriculture scientific dissemination; support services for farmers.
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