Automatic c purlin forming machine,this machine can make different width from 80mm-100mm.Common material thickness:1.5-3mm,with punching.
PLC control while changing sizes,no need labor to change sizes.Easy operation,little tolerance.
Main componnet of machine:3tons material decoiler,main forming machine,punching device,automatic cutting,control box,collecting table,hydraulic pump,
Auto C Purlin Forming Machine,Cz Type Steel Channel,Purline Sheet Roll Forming Machine,Full Auto C/Z Purline Botou Golden Integrity Roll Forming Machine Co.,Ltd , https://www.jcxsteelrollformer.com
The commonly used soil moisture forecasting methods include: a simple measurement method for soil water consumption rate, a statistical correlation method for influencing factors such as soil moisture, temperature, and precipitation, and a water balance method. Because these methods do not solve the long-term, day-to-day continuous calculation of soil moisture, and they also depart from the degree of soil water deficit, ie, the drought index, they are not ideal in practical applications. There are many methods for measuring soil moisture in farmland, and the most common ones are the drying method and the new technique of electrical measurement.)) Time domain reflectometry (TDR) measurement method. The drying method has the advantages of simple operation, convenience, and sufficient accuracy. The disadvantages are that it is time-consuming, time-consuming, and time-consuming. For example, only the drying time of the soil sample is not less than 8 hours at a constant temperature of 105 to 110e. However, because this method is a basic method for checking the correctness of other methods and their data, it cannot be abandoned because of its shortcomings. The soil moisture monitoring system measures soil moisture and has the advantages of convenient operation, flexible operation, time saving and time saving.
Through the soil moisture monitoring system, the data on climate, soil, and planting types in Huaibei region are analyzed. From the station network's ease of operation and management, 24 representative stations of the township and town water conservancy stations are set up in the district through the approval of the competent authorities. At the same time, 71 temporary soil moisture observation points were laid. Taking into account that these 95 direct observation stations still cannot objectively reflect the influence of soil spatial variability and spatial distribution of precipitation inhomogeneity on soil moisture, the Municipal Weather Control Office has provided more than 400 precipitation monitoring services for drought prevention services in the region. Point, as an indirect calculation of soil moisture points. In this way, a provincial water conservancy academy was established as a descriptive information center, 6 municipal defensive offices were divided into sub-centers, and the county-level anti-government offices worked in close cooperation. 24 township and town water conservancy stations were responsible for monitoring soil moisture for public opinion monitoring and forecasting information (network )system.
The soil moisture monitoring system combined with the data of precipitation observation points to calculate the soil moisture changes in the root development layer, which made up for the inadequacies of the traditional moisture prediction methods, and the effect of spatial distribution of soil variability and precipitation on the determination of soil moisture. More intuitively reflected. Accurate and scientific soil moisture data is provided during the cultivation of agricultural fields, which is more conducive to the development of agriculture.
Application of soil moisture monitoring system in farmland moisture measurement
In the process of agricultural production and life, the rational development and utilization of water resources, and the full play of the benefits of the irrigation process should be based on monitoring and forecasting of farmland soil moisture content. This is also the important significance of achieving water conservation in agriculture and alleviating the contradiction between economic development and water demand. Although the relevant departments attach great importance to the determination of soil moisture, but because of the changes in soil moisture affected by many factors, so a more complete monitoring method for farmland soil moisture remains to be further research and development. We conducted a large number of experimental studies and technical extensions on how to carry out public opinion reporting in the Quangbei region of Anhui Province, and achieved significant water-saving and income-increasing results. In order to do this work, several more prominent issues are discussed. Soil moisture monitoring system is worthy of promotion and application in the research process.
Prev Article
Sewing Invisibility Cloak with Laser