Application of GPRS Soil Moisture Monitoring System in Monitoring Soil Drought and Flood Indexes in Changzhi City
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At present, there are 5 stations at 17 stations in Changzhi City that serve as observation stations for hydrological stations, and 12 stations are commissioned by other local staff to observe and observe. When observing, from the field representing the land type of the local crop, drill two holes with a soil drill over lm above the center of the representative field, and take soil samples not less than 30g in depth at depths of 10, 20, 40, and 60cm, respectively. , Place a special earth box, weigh with a special balance, after drying in the dryer, calculate the percentage of water in the soil. In order to ensure accurate sampling, two holes and the same depth sampling are used for verification.
By using GPRS soil moisture monitoring system to analyze the soil moisture in this area, the main indicators of soil drought and flood can be obtained. Drought prediction and forecasting technology is still at its infancy in Changzhi. In order to meet the needs of Changzhi public opinion monitoring, the sub-bureau has been monitoring and monitoring the soil moisture content in Changzhi City since 2004, based on the local precipitation and the soil moisture content in the previous period, and forecasted by the five-day forecast period. Combined with the monitoring results of the 17 public opinion monitoring stations established in Changzhi City every five days, the forecast data were revised and published on the website of Changzhi Hydrology Bureau. The maximum change of forecast results and measured values ​​was within 10% on the 5th.
2. Good rigidity: the aluminum-plastic plate skillfully uses the mechanical principle of I-beam structure and endows it with unique mechanical properties. In addition, the aluminum-plastic plate is compounded under high-temperature conditions, and in the whole processing process, the two-layer Aluminum Plate is in a certain tension state
3. Rich color and strong decoration: the layer surface of aluminum-plastic plate can be made into various colors, and the pattern design matching for all purposes can be carried out