Surface application of cement kiln dust and lime to forages: Effect on soil pH
Surface application of cement kiln dust and lime to forages: Effect on soil pH
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水泥窑粉尘和石灰表面施用于饲料：对土壤 pH 值的影响
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
K. Mcrae
中科院分区：
文献类型：
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作者：
A. Rodd;J. Macleod;P. Warman;K. Mcrae
这项为期2年的田间试验比较了水泥窑粉尘（CKD）表面施用石灰提高土壤pH的相对有效性。在4个低pH点建立了7个土壤处理，分为4个块，分别是：(1)一个对照区；(2)根据每个场地的土壤测试，在推荐应用(L)处施用石灰；(3) 1.5 × L石灰；(4) L点CKD；(5) CKD为1.5升；(6)CKD为等量石灰；(7) CKD用量为石灰基当量的1.5倍，其中当量是基于CKD的表观中和值等于石灰的75%。施用前测定土壤pH值，施用后监测两个生长季节。表面施用2个月后，尽管CKD的中和值仅为石灰的75%，但其对土壤pH值的提高高于石灰。接近土壤表面的影响更大，这种趋势持续到第二年。CKD由于其细度(超过99…
This 2-yr field trial on forage plots compared the relative effectiveness of surface applications of cement kiln dust (CKD) to lime for raising soil pH. Seven soil treatments, in four blocks, were established at four low pH sites, which were: (1) a check plot; (2) lime at the recommended application (L), based on soil test for each site; (3) lime at 1.5 × L; (4) CKD at L; (5 ) CKD at 1.5 ( L; (6) CKD at an equivalent to lime basis; and (7) CKD applied at 1.5 times the equivalent to lime basis, where equivalence was based on CKD’s apparent neutralizing value equal to 75% that of lime. Soil pH was determined before applications and was monitored afterwards for two growing seasons. Two months after surface application, the CKD increased soil pH more than lime, despite its apparent neutralizing value being only 75% that of lime. Effects were greater closer to the soil surface and trends persisted through the following year. The CKD appears to be a quick-acting lime substitute due to its fineness (more than 99...