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中国农学通报 ›› 2022, Vol. 38 ›› Issue (35): 30-34.doi: 10.11924/j.issn.1000-6850.casb2021-0855

所属专题: 生物技术 农业生态

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

西藏昌都市洛隆县土壤养分状况分析及肥力综合评价

格桑顿珠()   

  1. 昌都市农业技术推广总站,西藏昌都 854000
  • 收稿日期:2021-09-01 修回日期:2021-11-08 出版日期:2022-12-15 发布日期:2022-12-09
  • 作者简介:格桑顿珠,男,1985年出生,西藏拉萨人,农艺师,本科,主要从事农技推广和土壤肥力研究。通信地址:854000 西藏昌都市西路帮达街社区325号 西藏昌都市农业技术推广总站,Tel:0895-4821863,E-mail:3601477@qq.com

Soil Nutrient Status Analysis and Soil Fertility Comprehensive Evaluation in Luolong County of Changdu City in Tibet

GESANG Dunzhun()   

  1. Changdu Agricultural Technology Extension Station, Changdu, Tibet 854000
  • Received:2021-09-01 Revised:2021-11-08 Online:2022-12-15 Published:2022-12-09

摘要:

为更好地掌握西藏地区县域尺度地土壤地力水平,本研究有针对性地对西藏昌都市洛隆县的土壤进行了采样分析和土壤肥力评价。采用模糊综合评判法对洛隆县耕地质量进行分等定级,在洛隆县的11个乡(镇)共采集187份土壤样品,测定了土壤pH、土壤有机质、土壤全氮、磷、钾及碱解氮、磷、钾含量,共8项肥力指标。研究结果显示洛隆县土壤pH呈中性至碱性变化,土壤有机质和氮素含量较为丰富。全氮含量高但有效氮含量一般,全钾含量一般但速效钾含量较高。土壤全磷和有效磷含量均较低。总体来看,洛隆县土壤的肥力等级水平总体处于中等偏上,但有1/4的土壤为低肥力水平。后期的农业生产中要注重低肥力水平土壤的地力提升。

关键词: 西藏洛隆县, 土壤养分, 肥力水平, 模糊综合评价

Abstract:

To better understand the soil fertility level at the county scale in Tibet, soil sampling analysis and fertility evaluation were carried out in Luolong County of Changdu City in Tibet. The quality of cultivated land in Luolong County was classified by fuzzy comprehensive evaluation method, 187 soil samples were collected in 11 towns of Luolong County. The values of 8 fertility indicators, including soil pH, and the content of soil organic matter, total nitrogen, total phosphorus, total potassium, alkaline hydrolysis nitrogen, available phosphorus and available potassium, were measured. The results showed that soil pH in Luolong County varied from neutral to alkaline. The content of soil organic matter and nitrogen were relatively rich. The total nitrogen content was high but the available nitrogen content was average. The total potassium content was average and the available potassium content was high. The content of soil total phosphorus and available phosphorus were low. Overall, the soil fertility level in Luolong County is above-average, but a quarter of the soil is low in fertility. In future agricultural production, we should pay attention to the improvement of soil fertility of low fertility soil.

Key words: Luolong County of Tibet, soil nutrient, soil fertility level, fuzzy comprehensive evaluation

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