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首页> 外文期刊>International journal of soil science >Decomposition Patterns of Selected Organic Materials in the Nigerian Guinea Savanna
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Decomposition Patterns of Selected Organic Materials in the Nigerian Guinea Savanna

机译：尼日利亚几内亚热带稀树草原中某些有机材料的分解模式

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Organic materials are important resources that could be used more efficiently in crop production. Improving the utilization efficiency of organic materials requires improved decomposition estimates, which could stem from a better understanding of decomposition patterns of different organic manures. Four organic amendments were studied for their decomposition patterns under field conditions of the Nigerian Guinea Savanna between 1998 and 2000. Mass loss from the organic materials, was found to increase in the following order, L. leucocephala prunnings> M. pruriens vines > maize stover > cow dung. The plant residues decomposed more rapidly, losing more than 50% of their dry weight within 28 days. Decomposition of cow dung occurred more slowly reaching 50% after about six weeks. A two pool, first order, three parameter negative exponential model was adequate to describe dry matter loss for the organic materials. The relative rate of decomposition for the labile pool (kL) were 0.33, 0.30, 0.55 and 0.52 g day- 1 for cow dung, maize stover, M. pruriens vines and L. leucocephala , respectively. At zero inorganic fertilizer application, average dry matter loss for three years was 51, 49, 35 and 30% for L. leucocephala, M. pruriens , cow dung and maize stover, respectively. The results indicated that organic materials biomass could be separated into two pools, each of which responds differently to varying levels of inorganic fertilizer.
机译：有机材料是重要的资源，可以更有效地用于作物生产。提高有机材料的利用效率需要改进分解估算，这可能是由于更好地了解了不同有机肥料的分解方式。研究了1998年至2000年在尼日利亚几内亚热带稀树草原的田间条件下的四种有机修正物的分解模式。发现有机物的质量损失按以下顺序增加，即白带菌>酸枝蔓>玉米秸秆>牛粪。植物残渣分解更快，在28天内损失了超过其干重的50％。大约六周后，牛粪的分解更缓慢地达到50％。一个两池一阶三参数负指数模型足以描述有机材料的干物质损失。牛粪，玉米秸秆，毛M葡萄藤的不稳定库（k L ）的相对分解速率分别为0.33、0.30、0.55和0.52 g day -1 和白头翁。在零施用无机肥的情况下，白带叶乳杆菌，普氏梭菌，牛粪和玉米秸秆的三年平均干物质损失分别为51％，49％，35％和30％。结果表明，有机材料的生物量可以分为两个池，每个池对不同水平的无机肥料的反应不同。

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