In the irrigated area of Korba, aquifer high electrical conductivity exceeding 28 dS m‾¹ was measured. Increasing soil electrical conductivity has led to an abandonment of farms and a reduction of the area devoted to some crops, such as tomatoes, which fell from 450 to 210 ha, between 1998 and 2011. Some new practices such water blending, crop rotation and crop association have been introduced. The most important crop combination of strawberry–pepper is widespread throughout the area. The two crops were grown simultaneously in the same plots for two successive years during the first years of the project; this new combination reached 130 ha. During recent years, this combination has been maintained for only one year due to the observed yield decrease during the second year. In order to evaluate this crop combination and with the aim of understanding why farmers grow only one year of this combination, trials were conducted from July 2011 to August 2013. Soil electrical conductivity (EC) distribution and irrigation uniformity were analysed. During irrigation seasons, soil EC was 1.45 dS m‾¹ at the beginning (July 2011) and reached 3.3 and 5.52 dS m‾¹ respectively in August 2012 and August 2013. These soil EC values were high for strawberry. This explains why farmers choose rainfed crops, and salt‐tolerant crops during the second year. A survey concerning irrigation uniformity gave an acceptable figure of almost 90%. Even if the gross margin shows that it is not worthwhile to blend fresh and saline water, farmers opt for water blending. © 2020 John Wiley & Sons, Ltd.

中文翻译：

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草莓-胡椒混合液在科尔巴地区的农田水盐管理

在科巴（Korba）的灌溉区，测得的含水层高电导率超过28 dS m -1。土壤电导率的提高导致农场的荒废，导致一些农作物面积的减少，例如西红柿，从1998年到2011年，西红柿的种植面积从450公顷减少到210公顷。一些新的做法，例如水混合，作物轮作和作物协会已经介绍。草莓和辣椒最重要的农作物组合遍布整个地区。在项目的第一年中，这两种作物在同一块土地上同时连续种植了两年；这个新的组合达到了130公顷。近年来，由于观察到的第二年单产下降，这种组合仅维持了一年。为了评估这种作物组合，并旨在理解为什么农民仅种植这种组合的一年，于2011年7月至2013年8月进行了试验。分析了土壤电导率（EC）分布和灌溉均匀性。在灌溉季节，土壤的EC值在开始时（2011年7月）为1.45 dS m -1，在2012年8月和2013年8月分别达到3.3和5.52 dS m -1。这些草莓的EC值很高。这解释了为什么农民在第二年选择雨养作物和耐盐作物。一项关于灌溉均匀度的调查显示，可接受的比例接近90％。即使毛利表明不宜混合淡水和盐水，农民也选择混合水。分级为4 +©2020 John Wiley＆Sons，Ltd.