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首页> 外文期刊>Acta Horticulturae >Electrical conductivity and pH of root zone soil as affected by continuous and combined application of chemical fertilizers to cucumber cultured in solar greenhouses.
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Electrical conductivity and pH of root zone soil as affected by continuous and combined application of chemical fertilizers to cucumber cultured in solar greenhouses.

机译：连续和联合施用化肥对日光温室黄瓜生长的影响，根区土壤的电导率和pH值。

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摘要

Five chemical fertilizers (urea, ammonium sulphate, ammonium diphosphate, potash sulphate and calcium monophosphate) combined in different kinds and NPK ratios were continuously applied to potted cucumber (Cucumis sativus L.) in a solar greenhouse to study their effects on electrical conductivity and pH of root zone soil. The results revealed that: continuous cropping increased soil salinity and decreased pH, and gradually enhanced the treatment effects among different fertilizer combinations; increase of nitrogen rate gradually raised the electrical conductivity of soil, especially when using ammonium sulphate as nitrogen source; adding more amount of phosphorus or potassium significantly accelerated the electrical conductivity to rise after several continuous crops; a large amount of nitrogen markedly decreased soil pH value, particularly using ammonium sulphate as nitrogen source and under the conditions of multiple cropping, while adding the rate of phosphorus or potassium less affected the soil pH value.
机译：在日光温室中，将五种化学肥料（尿素，硫酸铵，二磷酸铵，硫酸钾和单磷酸钙）以不同的NPK比例混合使用，并将其连续施用到盆栽黄瓜（Cucumis sativus L.）上，研究其对电导率和pH的影响。根区土壤。结果表明：连作提高了土壤盐分，降低了pH，逐渐增强了不同肥料组合的处理效果。氮素含量的增加逐渐提高了土壤的电导率，特别是在以硫酸铵为氮源的情况下。连续多次种植后，添加更多的磷或钾可显着加速电导率的上升;大量的氮显着降低了土壤的pH值，特别是使用硫酸铵作为氮源并在多次种植的条件下，而磷或钾的添加量对土壤pH值的影响较小。

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