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首页> 外文期刊>Revista Brasileira de Ciência do Solo >Growth, nodulation and nitrogen fixation of cowpea in soils amended with composted tannery sludge
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Growth, nodulation and nitrogen fixation of cowpea in soils amended with composted tannery sludge

机译：堆肥制革污泥改良of豆在土壤中的生长，结瘤和固氮作用

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Tannery wastes generation is increasing every year and a suitable method for tannery sludge management is necessary in order to decrease this environmental problem. The composting is recognized as a suitable method for sludge recycling.. The effect of tannery sludge compost (TSC) rates on growth, nodulation and N fixation of cowpea was investigated. Sandy and clayey soils were amended with TSC at rates of 0, 7.5, 15, 30, and 60 t ha-1. The shoot dry weight of cowpea plants 45 days after emergence (DAE) was greater in the TSC-amended than in the unamended soil. In the sandy soil, nodule dry weight increased with TSC application 45 DAE. In the clayey soil, 45 DAE, nodule dry weight decreased with TSC amendment levels greater than 7.5 t ha-1 compared to the unamended control. The application of TSC increased N accumulation in the cowpea plants. The results suggest that cowpea responds differently to TSC depending on the amendment rate and initial soil type.
机译：制革废物的产生量每年都在增加，为了减少这种环境问题，有必要采用合适的制革厂污泥管理方法。堆肥被认为是一种适合污泥回收的方法。研究了制革厂污泥堆肥（TSC）速率对on豆生长，结瘤和固氮的影响。用TSC分别以0、7.5、15、30和60 t ha-1的速度对沙质和黏性土壤进行改良。在TSC改良土壤中，cow豆植物出苗后45天（DAE）的茎干重量大于未改良土壤。在TSC施用45 DAE的沙质土壤中，结节干重增加。在TSE修正水平大于7.5 t ha-1的情况下，与未修正的对照相比，在45 DAE的黏土中，结节干重降低。 TSC的施用增加了the豆植物中的氮积累。结果表明cow豆对TSC的反应不同，具体取决于改良率和初始土壤类型。

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