厄瓜多尔瓜亚斯省巴尔扎尔的农用地下水质量评估

Leontes Zambrano, Dioselina Navarrete, Ángel Arce, Marcos Chila, Kleber Medina, Athina Centanaro
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引用次数: 0

摘要

水是生物和生态系统的重要自然资源。地下水对人类消费和农业活动具有重要意义,但多年来,地下水资源日益稀缺。这项研究的目的是评估厄瓜多尔瓜亚斯省巴尔扎尔用于作物灌溉的水井中提取的地下水的质量。采用了四种处理方法和三次重复;从三口井中抽取的地下水加上蒸馏水芯。对萝卜(Raphanus sativus)、可可(Theobroma cacao)和玉米(Zea mays)的种子进行了物理、化学和微生物分析以及黑暗培养毒性试验。浊度超过了 TULSMA 规定的允许水平,碳酸氢盐和氯的含量也超过了允许限度。微生物分析显示,粪大肠菌群值超过 1000 UFC.100 mL-1,表明水源中存在污染物。对萝卜种子进行的植物毒性测试表明,一号井中的萝卜生长受到刺激,二号和三号井中的萝卜生长受到轻微影响。可可和玉米种子在三个水井中分别表现出中度和轻度毒性。虽然某些变量超过了最高允许限值,但三口井的水仍可用于灌溉;不过,有必要采取措施改善这些水井的水质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of groundwater quality for agricultural use in Balzar, province the Guayas, Ecuador
Water is a natural and vital resource for living beings and ecosystems. Groundwater is of great importance for human consumption and agricultural activities, but over the years, it has become an increasingly scarce resource. The objective of this research was to evaluate the quality of groundwater extracted from wells used for crop irrigation in Balzar, province the Guayas, Ecuador. Four treatments and three repetitions were used; groundwater extracted from three wells plus a distilled water core. Physical, chemical, microbiological analyzes and a toxicity test with dark incubation were carried out on seeds of radish (Raphanus sativus), cocoa (Theobroma cacao) and corn (Zea mays). Turbidity exceeded permitted levels under TULSMA regulations and bicarbonate and chlorine levels exceeded the permitted limit. The microbiological analysis reflected fecal coliform values above 1000 UFC.100 mL-1 of water, indicating the presence of contaminants in the water sources. Phytotoxicity tests carried out with radish seeds showed a stimulation of radicle growth in well one and mild toxicity in wells two and three. For cocoa and corn seeds, moderate and mild toxicity was evident, respectively in the three wells. Although the maximum permissible limits were exceeded in some variables, the water from the three wells can be used for irrigation; however, there is a need to take measures to improve the quality of the water in these wells.
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