| 摘要: |
| 针对土壤墒情监测和指导田间变量灌溉的要求,研制开发了能同时测量采样点经纬度位置和土壤含水率(体积分数)的土壤水分空间分布快速测试仪.该测试仪由80C552微控制器、GPS接收机、水分传感器等几部分组成.测量得到的数据经串口传到上位机经过处理和分析后,采用GIS软件对采样点试验数据进行分析,生成土壤水分空间分布图.对地表下10cm深度土壤含水率的采样试验结果表明,2组测量数据在小范围内空间变异系数＜10%,说明仪器性能稳定可靠.该测试仪能为变量灌溉和墒情监测提供科学依据. |
| 关键词: 土壤水分 空间分布 |
| DOI：10.11841/j.issn.1007-4333.2005.02.037 |
| 投稿时间：2004-10-25 |
| 基金项目:国家高技术研究发展计划(863计划) |
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| Development of a quick-measuring instrument for soil moisture distribution |
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| Abstract: |
| Aiming at the requirements of variable irrigation and soil moisture monitor in precision agriculture, an instrument for measuring soil moisture content and its spatial distribution was developed. The instrument is composed of a single-chip microcomputer, a GPS receiver and a SWR moisture sensor. The collected data were analyzed by a GIS software and then the soil moisture spatial-distribution maps were acquired. The experimental results indicated that the instrument provided a scientific basis for soil moisture monitor and variable irrigation. |
| Key words: GPS GIS |
