my country has built the first large area 100-meter high-precision three-dimensional soil map
Lishui, Zhejiang, December 18 (Reporter Zhan Yuan)
What kind of soil and climate produce the best citrus?
What kind of temperature, humidity and sunshine is the best quality spring tea?
In the past, the cultivation of agricultural products can only rely on experience, and it is difficult to carry out detailed and accurately measurable standardized operations. This makes it difficult to control the quality of agricultural products, and it depends entirely on the weather.
However, the situation of “relying on the sky for food” will be changed. On the 18th, the vice-president of the institute was guided by the China Information Technology Hundreds Association and hosted by the Eco-Economy Digital Engineering (Lishui) Research Institute at the “2020 Ecological Value Digitalization National Summit Dean Wang Jinxiang released my country's first large-area high-precision three-dimensional soil map of 100 meters.
According to him, this high-precision digital soil map built using geographic information system technology divides the soil in Lishui City into 22,344 polygons within the accuracy range of 100 meters, and 97 according to the characteristics of nitrogen, phosphorus, potassium content, and trace element distribution. The types of soil can be used for fine management of crop growth simulation, rural industrial planning, non-point source pollution load estimation in the river basin, flood disaster prediction and water resource management.
According to reports, this three-dimensional soil map currently aggregates three types of basic data, namely the soil survey data of 609 sampling points across the country, Zhejiang Province, Lishui City and its counties (districts); 11587 sampling points for soil testing formula fertilizer in Lishui City Measured data from 91 sampling points in 18 pilot towns in District 1, 8 cities (counties) in Lishui City.
These test data measure the soil clay content, pH, physical properties, organic matter, nitrogen, phosphorus and potassium content, trace element distribution and other characteristics, from soil depths of 0 to 20 cm, 20 to 30 cm, 30 to 70 cm and greater than 70 cm. s position.
At the same time, the institute also established the country's first 90-meter meteorological data map in Lishui.
Relying on these refined digital systems for soil and meteorology, the "Crop Quality Index" that accurately measures the quality of special agricultural products is also being developed simultaneously. At present, Lishui tea climate, tea soil quality index and Lishui sweet orange pomelo climate and soil index have been launched. .
It is understood that relying on these digital systems and excellent product indexes, while visually displaying and comprehensively analyzing soil ecological data, it can accurately match the most suitable crops for the soil and climate environment, and help farmers select and plant crops that can achieve the best taste. Special agricultural products.
Wang Jinxiang said that these digital systems can not only facilitate the government to make crop industry planning decisions, help farmers to carry out forward-looking planting planning and precise production management, but also ensure that the quality of the harvested agricultural products is the best, thereby increasing farmers’ income and promoting agriculture. Transform and upgrade to intelligence and refinement.
At present, mobile phone management software developed based on these digital systems has also been launched, which can provide agricultural growers, individual farmers and agricultural enterprises with soil, crop recommendation, and agricultural product supply and demand information docking services.
It is understood that Lishui is my country's first pilot city for the value realization mechanism of ecological products.
In 2019, the Office of the Leading Group for Promoting the Development of the Yangtze River Economic Belt formally issued the "Opinions on Supporting Lishui, Zhejiang in the Pilot Program of Ecological Product Value Realization Mechanisms", requiring Lishui City to establish a value accounting and evaluation application mechanism, an ecological product market trading system, and innovative ecological value realization In-depth exploration is carried out in terms of paths and other aspects. The results such as the release of 100-meter-level high-precision three-dimensional soil maps for large areas this time are the use of informatization and digital methods to innovatively explore practical projects to realize the value of ecological products.