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首页> 外文期刊>Journal of water and climate change >Modeling water and salinity risks to viticulture under prolonged sustained deficit and saline water irrigation
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Modeling water and salinity risks to viticulture under prolonged sustained deficit and saline water irrigation

机译：在长期持续的缺陷和盐水灌水下造型水和盐度对葡萄栽培的风险

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摘要

A numerical model (HYDRUS-1D) was used to evaluate the impacts of the long-term (2004-2015) use of sustained deficit irrigation (10% (D10%) and 20% (D20%) less than full), irrigations with increased water salinity (EC(iw)of 0.5 and 0.8 dS/m), 50% deficit irrigation during a drought period (DD50%), and DD50% coupled with an increased salinity of water (EC(iw)of 0.5 and 0.8 dS/m) on the water balance and salinity dynamics under grapevine in two soils at two locations with different climatic conditions. The results showed that D20% and DD50% significantly reduced water uptake and seasonal drainage (D-r) by the vines as compared to full irrigation. Vineyards established in light-textured soils showed two to five times larger drainage losses as compared to heavy-textured soils. The results revealed that the slight increase in the electrical conductivity of irrigation water (ECiw= 0.5 and 0.8 dS/m) increased the risks in terms of the amount of salts deposited in the soil and transport of large quantities of irrigation-induced salts beyond the root zone. Hence, it is imperative to monitor all of the important water, soil, and salinity drivers of agro-hydro-geological systems to understand the hydro-salinity dynamics and to ensure the long-term sustainability of irrigated viticulture.
机译：使用数值模型（Hydrus-1d）来评估长期（2004-2015）使用持续缺陷灌溉的影响（10％（D10％）和20％（D20％），灌溉随干旱期（DD50％）的水盐度（EC（Iw）增加了0.5和0.8ds / m）的50％缺陷灌溉，DD50％与水的盐度增加（EC（IW）为0.5和0.8ds / m）在两个地点的两种土壤中葡萄水平衡和盐度动力学，不同气候条件。结果表明，与全灌溉相比，D20％和DD50％明显减少了葡萄藤的水吸收和季节性排水（D-R）。与纹理土壤相比，在浅纹理土壤中建立的葡萄园显示出两到五倍的排水损失。结果表明，灌溉水（ECIW = 0.5和0.8ds / m）的电导率略微增加，就沉积在土壤中的盐量和大量灌溉诱导的盐超过的盐量而言增加了风险根区域。因此，必须监测农业水力地质系统的所有重要水，土壤和盐度驱动因素，以了解水力盐度动态，并确保灌溉葡萄栽培的长期可持续性。

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