Rice field nitrogen-phosphorous runoff loss monitoring and early warning device and application method thereof

Abstract

The invention discloses a rice field nitrogen-phosphorous runoff loss monitoring and early warning device and relates to the technical field of environmental monitoring. The device consists of a sampling detector (1), a monitoring sensor (2), a data processor (3) and a user terminal (4). With respect to the randomness and uncertainty of rice field nitrogen-phosphorous runoff loss, the device disclosed by the invention solves the problem of difficult monitoring of total nitrogen and total phosphorous in rice field drainage, and conducts direct measurement of pH, dissolved oxygen, redox potential, temperature, conductivity, salinity, chlorophyll and suspended solid parameter in rice field drainage runoff as well as indirect measurement of total nitrogen and total phosphorous; moreover, according to real-time early warning of the concentrations of total nitrogen and total phosphorous, the device realizes real-time monitoring of the rice field drainage water quality and risk early warningof nitrogen-phosphorous loss, and provides a scientific basis for decision making of an environment manager and equipment support for the pollution control on an agricultural non-point source.

Description

technical field [0001] The invention relates to the technical field of environmental monitoring, and more particularly to a monitoring and early warning device for nitrogen and phosphorus runoff loss in paddy fields. Background technique [0002] As the main form of farmland non-point source pollution, nitrogen and phosphorus runoff loss is an important reason for the deterioration of surface water environment. In recent years, it has become a hot spot at home and abroad. Water quality monitoring of paddy field surface runoff is mainly to carry out regular or real-time monitoring of water quality parameters such as nitrogen and phosphorus in the water body. By measuring the quality of runoff water, it provides accurate and effective data for environmental managers to make decisions (Wu Liang, Ma Youhua, Fu Biyu, etc. Farmland non-point source pollution monitoring technology and method[J]. Agricultural Science and Technology: English Edition, 2014, 15(12):2214-2217). [0003...

AI Technical Summary

Problems solved by technology

[0004] Because the surface runoff of rice fields has the characteristics of large temporal and spatial variations in runoff volume and pollutant concentration, and small runoff depth, the existing online water quality monitors have limitations in being directly used for real-time monitoring of pollutants in rice field runoff, and cannot realize the monitoring of nitrogen and phosphorus in water bodies. Accurate monitoring, especially online monitoring of total nitrogen and total phosphorus

The measurement of surface runoff, which is mainly based on manual sampling and laboratory analysis, requires a lot of manpower and poor timeliness, resulting in the lack of basic monitoring data, so that it is impossible to realize the early warning of pollution risk of nitrogen and phosphorus runoff loss

[0005] To sum up, in terms of on-line monitoring and early warning equipment for rice field runoff water quality, there is still a lack of economical, convenient and applicable monitoring equipment, especially online rapid monitoring and early warning equipment for nitrogen and phosphorus in water bodies, and there is an urgent need to integrate nitrogen and phosphorus online monitoring and early warning equipment , realizing real-time monitoring of nitrogen and phosphorus in rice field runoff and early warning of nitrogen and phosphorus loss risks, providing scientific basis for environmental managers' decision-making, and providing equipment support for the prevention and control of agricultural non-point source pollution

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