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入滲水礦化度對土壤入滲特征和離子遷移特性的影響?yīng)?/div>
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Both Soil Infiltration Characteristics and Ion Mobility Features by Mineralization Degree of Infiltration Water
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    摘要:

    為開發(fā)利用淺層地下劣質(zhì)水，進(jìn)行均勻土柱一維垂直入滲實驗,，對礦化度不同的入滲水在土柱中入滲后的剖面含水率分布和土壤入滲率進(jìn)行了分析,，并對土壤剖面的含鹽量以及入滲后鹽分降低區(qū)深度隨入滲水礦化度的變化規(guī)律進(jìn)行了研究,。結(jié)果表明,，含鹽水入滲能夠改變土壤結(jié)構(gòu),，并增強(qiáng)土壤導(dǎo)水和持水能力,，但隨著進(jìn)入土壤中的鈉離子數(shù)量增加,，土壤的導(dǎo)水和持水能力并非由礦化度一個因素決定，而是由入滲水礦化度和鈉離子數(shù)量共同決定,。當(dāng)?shù)V化度低于3 g/L左右時仍可以對土壤上層的鹽分有一定的淋洗作用,，但當(dāng)?shù)V化度進(jìn)一步升高時,，入滲水對供試土壤的鹽分幾乎沒有淋洗作用,。

    Abstract:

    One-dimensional perpendicular infiltration process to water with different mineralization degree by uniformity earth pillar experiments was studied. Soil moisture content distribution and infiltration rate infiltrated by different mineralization degree were analyzed. The variance in regular pattern of soil profile salt content as well as desalt depth after infiltration in response to mineralization degree of infiltrated water were carried out at the same time. The results showed that saline water infiltration could transform soil structure and enhance both soil water transmitting ability and moisture holding capacity, but in company with sodium ion in soil increasing, soil water transmitting ability and moisture holding capacity did not depend only on mineralization degree, but rather codetermined by both mineralization degree and sodium ion quantity; top soil salt would be infiltrated by water when mineralization degree lowered about 3g/L, but soil salt was scarcely infiltrated when mineralization degree further increased.

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吳忠東,王全九.入滲水礦化度對土壤入滲特征和離子遷移特性的影響?yīng)琜J].農(nóng)業(yè)機(jī)械學(xué)報,2010,41(7):64-69. Both Soil Infiltration Characteristics and Ion Mobility Features by Mineralization Degree of Infiltration Water[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(7):64-69.

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