WebNov 26, 2024 · 相对于对照,处理量为19吨ha -1的木屑生物炭显示出最大的EC降低幅度达62.0%,ESP降低74.5%,可交换Na降低最高。 玉米植株吸收氮磷钾,谷物和稻草的产量和土壤肥力指数的最高增幅对应于19吨公顷-1木屑生物炭处理。 WebNov 29, 2024 · 11.1.1 Saline Soils. Saline soils are defined as the soils which have pHs usually less than 8.5, ECe ≥ 4 dS m −1 and exchangeable sodium percentage (ESP) < 15. A high ECe with a low ESP tends to …
SAR (Sodium Adsorption Ratio) and ESP (Exchangeable …
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Diagnosing Saline and Sodic Soil Problems - 0.521
WebBase application rates for soil amendments on SAR and/or ESP soil test results, the purity of the applied amendment, and quality of the irrigation water. Once the calcium … WebNov 11, 2024 · Comparison of characteristics of salt affected soils Characteristic Saline soil Sodic soil or alkali soil Saline – sodic soil Soil pH ~ 8.5 >8.5 <8.5 EC > 4 dS m-1 <4 dS m-1 > 4 dS m-1 ESP <15 >15 >15 Content in soil Excess soluble salts of calcium, magnesium and sodium Presence of excess exchangeable sodium on the exchange complex These … WebIn some parts of the world, saline soils are also known as white alkali soils. Soil sodicity is evaluated in terms of the relative amounts of Na + on the cation exchange sites (exchangeable sodium percentage, ESP) or in the soil solution (sodium adsorption ratio, SAR), given the accompanying levels of salinity. Other names for sodic soils ... meals at wendy\u0027s