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中国农学通报 ›› 2017, Vol. 33 ›› Issue (29): 61-65.doi: 10.11924/j.issn.1000-6850.casb16120036

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

滇中高海拔区不同年限撂荒地土壤质量特征变化及开发利用研究

温婧媛,李小英,申佳艳   

  1. (西南林业大学环境科学与工程学院,昆明 650224)
  • 收稿日期:2016-12-07 修回日期:2017-09-24 接受日期:2017-02-24 出版日期:2017-10-24 发布日期:2017-10-24
  • 通讯作者: 温婧媛
  • 基金资助:
    国家科技部重大科技支撑项目“澜沧江中下游流域典型生态系统本底考察”(2008FY110300-04)。

Quality Change and Exploitation and Utilization of Abandoned Land with Different Years in High Altitude Area of Central Yunnan

Wen Jingyuan, Li Xiaoying, Shen Jiayan   

  1. (College of Environmental Science and Engineering, Southwest Forestry University, Kunming 650224)
  • Received:2016-12-07 Revised:2017-09-24 Accepted:2017-02-24 Online:2017-10-24 Published:2017-10-24

摘要: 为进一步对撂荒地闲置资源进行开发利用,需要了解撂荒后土壤质量的发生发展变化,以昆明市禄劝县则黑乡不同年限撂荒地(0、5、10、15、20年)土壤养分和酶活性为对象,研究2500 m海拔区土壤养分、酶活性及二者之间的相关关系,并采用土壤养分评价指数和酶活性指数分析不同年限撂荒地土壤质量情况。结果表明:整体上,土壤养分随年限增加呈现先下降再上升的过程,土壤酶活性呈现逐步上升并随着植被种群的确立而稳定趋势。大部分土壤养分、土壤酶活性及二者之间存在极显著或显著的相关关系,因此,可通过施有机肥间接调控土壤其他养分及酶活性的高低;土壤养分及酶活性变化受撂荒最近一年种植农作物及撂荒后植被种类的影响;并对如何开发利用高海拔区撂荒地资源提出相应的建议。

关键词: 气候变化, 气候变化, 产量, 逐步回归分析, 冬小麦, 玉米

Abstract: For the further development and utilization of idle resources of abandoned land, need to understand the occurrence and development of soil quality changes after abandonment, in Luquan County of Kunming, the Zehei country abandoned land in different years (0a, 5a, 10a, 15a, 20a) of soil nutrient and soil enzyme activities as the object of study, the soil nutrient area of 2500 meters above sea level, the relationship between the enzyme activity and the two, and the analysis of different life fallow soil quality by soil nutrient evaluation index and enzyme activity index. The results showed that: on the whole, the soil nutrient decreased first and then increased with the increased length of the process, soil enzyme activity increases gradually and with the establishment of vegetation population and stable trend. Most of the soil nutrient and the relationship between highly significant between soil enzyme activity and two, so it can be through the implementation of organic fertilizer indirect regulation other soil nutrients and enzyme activity of soil nutrient and enzyme activity; Effect of vegetation types change from abandoned last year to grow crops and fallow; and put forward the corresponding suggestions on how to develop the use of land resources in high altitude area.