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Soils rehabilitation in areas exposed to recurrent floods and water logging

One severe impact of recurrent flooding and waterlogging in Juye County in the Shandong Province, is the salinization and alkalization of soils. The soil in Juye, mainly Luvisoils, with high salt content due to the water loggings, is rich in calcium, magnesium, ions of chloride, sulfate and carbonate. Salt compounds created by positive or negative ions enhance water salinity in the soil, reducing the roots’ absorptive capacity of soil nutrients. The average annual rainfall in Juye is 500 mm with a concentrated rainfall (more 60 percent of the annual precipitation) during June, July and August. The good practice strategy consists of a series of interrelated measures for soil improvement, including drainage improvements, land levelling, deep ploughing and most importantly, based on detailed soil testing the application of formulated fertilization, the key to rehabilitating local soil conditions. Soil testing focused on nutrition values and salinity. Suitable fertilizer compositions were developed in response to the specific soil conditions and predominant local cropping patterns. Local fertilizer production enterprises were hired to produce the formulated fertilization with the dual objectives of rehabilitating the soils while providing sound fertilization for the main crops used in the region, mainly wheat, cotton and maize.

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Author: Agricultural Bureau Juye County
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Organization: The Food and Agriculture Organization of the United Nations FAO TECA
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Year: 2020
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Country/ies: China
Geographical coverage: Asia and the Pacific
Type: Practices
Content language: English
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