Briefly describe the role of soil moisture and drought monitoring systems and common methods for measuring soil moisture

Soil moisture refers to the amount of water in the soil and the degree of use by the crop. It can be described by a series of indicators such as soil moisture content, soil relative humidity, soil total water storage and soil available moisture.
Soil moisture monitoring is the basic work of water circulation law research, agriculture and animal husbandry irrigation, rational use of water resources, and basic information collection for drought relief. For a long time, the most important factor of soil moisture information is that there are few soil water content monitoring stations, which leads to the shortage of soil water content information. The soil and soil water status are closely related to crop types and their growth and development. Therefore, meteorological conditions and soil can be considered. The physical characteristics, soil moisture status, crop species and growth and development status are the four major factors in the monitoring of drought and drought. The TZS-12J soil moisture and drought monitoring system developed and produced by Top Instrument is designed in accordance with the Soil Water Monitoring Standard SL000-2005 People's Republic of China Water Industry Standards, from the related introduction of its products (http://) .net/product/2032.html ) It can be known that the soil moisture and drought monitoring system is also called the soil moisture monitoring system. This instrument can not only monitor the soil moisture in real time, but also monitor the soil water potential according to user needs. , temperature and conductivity, etc., the matching software can flexibly set the sampling period and storage period of the public opinion parameters, patrol and call data and analysis data according to the user's needs, and timely understand the soil moisture situation.
The current methods for measuring soil moisture are as follows:
1, the national standard method, this method is the most accurate, is also the national standard test method, but the operation method is very cumbersome, the application of more instruments must be professionally trained to operate, if you want to get the water situation in time is very difficult, also need a lot of Manpower and material resources do a lot of samples to reflect the soil moisture situation.
The instrument will be applied to (iron shovel, ring knife, ring knife handle, earth cutter, moisture aluminum box, electronic balance, dryer, silica gel, electric thermostat blast drying oven, etc.)
2. Rapid measurement method, which has been widely used in recent years. The main features are strong portability, high accuracy and easy to use, which can greatly improve work efficiency. At present, the instrument using this method has the soil moisture meter of TZS series. Interested friends can find more information through this website (http://)
3. The lyrical drought management system, this fixed-point moisture measurement product is suitable for long-term monitoring of one or more soil moisture. Advantages: no need for personnel operation, data will be automatically sent to the designated computer or mobile phone, the data interval can be adjusted, can be powered by solar or AC power, such as sudden power failure, data storage is not lost, application feedback is better. Disadvantages: can not be portable, mobile is not strong, the price is higher. However, the demand for this system is still quite high in the past few years. This article recommends the TZS-12J series of soil moisture and drought monitoring systems to friends. For details, please refer to this website: http:// /2032.html, this system can realize vertical six-point synchronous detection for up to 40 monitoring points, which can be viewed offline, and can also detect multi-channel measuring points in real time. This system is widely used in the industry, and the recognition degree is also Higher.
In summary, no matter which method is used for monitoring, in order to meet the needs of analysis of public opinion and drought, scientific management of water resources, and decision-making for drought relief, strengthening public opinion monitoring is the most important resource for rational use of water resources, scientific management of water resources and decision-making for drought relief. basic work. Therefore, it is imperative to increase monitoring of drought and soil moisture monitoring.

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