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首页> 外文期刊>Journal of Maize Research and Development >Soil physico-chemical characterization in the different soil layers of National Maize Research Program, Rampur, Chitwan, Nepal
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Soil physico-chemical characterization in the different soil layers of National Maize Research Program, Rampur, Chitwan, Nepal

机译：尼泊尔奇旺拉姆普尔国家玉米研究计划不同土壤层的土壤理化特性

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Soil pit digging and their precise study is a decision making tool to assess history and future of soil management of a particular area.Thus, the present study was carried out to differentiate soil physico-chemical properties in the different layers of excavated pit of the National Maize Research Program, Rampur, Chitwan, Nepal.Eight pits were dug randomly from three blocks at a depth of 0 to 100 cm.The soil parameters were determined in-situ, and in laboratory for texture, pH, OM, N, P (as P2O5), K (as K2O), Ca, Mg, S, B, Fe, Zn, Cu and Mn of collected soils samples of different layers following standard analytical methods at Soil Science Division, Khumaltar.The result revealed that soil structure was sub-angular in majority of the layers, whereas bottom layer was single grained.The value and chrome of colour was increasing in order from surface to bottom in the majority pits.Similarly, the texture was sandy loam in majority layers of the pits.Moreover, four types of consistence (loose to firm) were observed. Furthermore, mottles and gravels were absent in the majority layers.Likewise, soil was very to moderately acidic in observed layers of majority pits, except bottom layer of agronomy block was slightly acidic.Regarding fertility parameters (OM, macro and micronutrients), some were increasing and vice-versa, while others were intermittent also.Therefore, a single layer is not dominant for particular soil physico-chemical parameters in the farm.In overall, surface layer is more fertile than rest of the layers in all the pits.
机译：土壤坑的挖掘及其精确研究是评估特定地区土壤管理的历史和未来的决策工具。因此，本研究旨在区分美国国家挖坑不同层的土壤理化特性。尼泊尔奇旺（Chitwan）兰布尔（Rampur）的玉米研究计划（Maize Research Program），从0至100厘米深度的三个块中随机挖出八个坑，在土壤中并在质地，pH，OM，N，P（采用Khumaltar土壤科学处的标准分析方法，收集了不同层的土壤样品中的K，Ca，Mg，S，B，Fe，Zn，Cu和Mn（以P2O5表示），结果表明土壤结构为在大多数层中亚角质，而底层是单颗粒的。在大多数凹坑中，颜色的值和铬从表面到底部的顺序从高到低依次增加;在大多数凹坑中，质地是砂壤土。 ，四种类型的一致性e到牢固）。此外，多数层上没有斑点和砾石;同样，观察到的大多数坑层土壤都呈中度至中度酸性，除了农艺区块的底层略呈酸性外，就肥力参数（OM，大量和微量营养素）而言，有些因此，对于农场中特定的土壤理化参数而言，单层并不是主要的。总体而言，表层比所有坑中的其余层更肥沃。

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