| 张家川县耕地土壤肥力评价及空间分布特征 |
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| 引用本文： | 章梅.张家川县耕地土壤肥力评价及空间分布特征[J].现代农业科技,2024(8). |
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| 作者姓名： | 章梅 |
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| 作者单位： | 江苏地质矿产设计研究院 |
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| 基金项目： | 中国煤炭地质总局科技项目(ZMKJ-2022-J04-4) |
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| 摘 要： | 通过对张家川县耕地土壤肥力指标的测定,采用主成分分析法评价土壤肥力质量、结合GIS分析各肥力指标及土壤综合肥力的空间变异性。结果表明：研究区耕地呈碱性,恭门镇南部地区碱性较强;有机质含量中等,闫家乡有机质含量最丰富为1279.79 mg/kg;全氮含量较丰富而速效氮缺乏,均呈现从西到东逐渐升高的空间分布;速效钾、有效磷的含量丰富,呈现东高西低、南低北高的分布趋势。主成分分析结果表明张家川镇、恭门镇土壤速效养分供应能力强、但保肥能力较差;闫家乡土壤养分蓄积能力强。土壤综合肥力质量从高到低依次为闫家乡、张家川镇、恭门镇,呈现出东高西低的趋势。综上,研究区内土壤养分及综合肥力分布不均,需协调氮、磷、钾肥施用比例,做到“因地、因苗、因水、因时”分期精准施肥,促进肥效发挥。
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| 关 键 词： | 张家川 土壤肥力 空间变异 |
| 收稿时间： | 2023/8/3 0:00:00 |
| 修稿时间： | 2023/8/3 0:00:00 |
Soil fertility evaluation and spatial distribution characteristics of cultivated land in Zhangjiachuan County |
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| Abstract: | Through the determination of soil fertility indicators of cultivated land in Zhangjiachuan County, the quality of soil fertility was evaluated by principal component analysis, combined with GIS analysis of each fertility index and the spatial variability of the comprehensive soil fertility. The results show that: the soil in the study area is alkaline, alkaline mainly distributed in the southern part of Gongmen town; organic matter content is medium, the organic matter content of Yan hometown is the richest 1279.79 mg/kg; total nitrogen content is rich and quick-acting nitrogen content is lacking, are presented from the west to the east gradually rising spatial distribution trend; quick-acting potassium, effective phosphorus content is rich, presented east high west low, south low north high distribution trend The results of the principal component analysis showed that Zhangjiachuan was rich in effective potassium and effective phosphorus. Principal component analysis results show that Zhangjiachuan town, Gongmen town soil quick-acting nutrient supply capacity, but poor fertility; Yan home town soil nutrient accumulation capacity. Soil fertility quality from high to low in the order of Yan hometown, Zhangjiachuan town, Gongmen town,were presented from the west to the east gradually rising spatial distribution trend. In summary, soil nutrients and comprehensive fertility distribution in the study area is uneven, need to further promote soil formula fertilization technology, to achieve "due to the land, due to seedlings, due to water, due to the time" phased precision fertilization, to promote fertilization effect. |
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| Keywords: | zhangjiachuan soil fertility spatial variability |
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