Construction method for nitrogen and phosphorus loss system of greenhouse soil of intercept river network area
A technology for constructing methods and facilities, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as runoff pollution of facilities and vegetable fields in water network areas, and facilitate large-scale promotion Effects of application, load reduction, and high survival rate
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Embodiment 1
[0028] The Taihu Lake Basin covers an area of 36,900 square kilometers, mainly plains, accounting for 4 / 6 of the total area, 1 / 6 of the water surface, and the rest are hills and mountains. The project demonstration area is located in Binhu District, Wuxi City. With the adjustment of the agricultural structure, facility cultivation, especially greenhouse vegetable cultivation area continues to expand, and greenhouse vegetable production has become one of the important components of local agricultural production. For the Taihu Lake area, most of the protected vegetables are replanted from rice fields, and the coexistence of rice fields and vegetable fields in the same area is common. The Taihu Lake area is densely covered with river networks, and many facility vegetable fields are adjacent to water bodies. Fertilizers can easily enter the water bodies through runoff under the erosion of rainwater. Therefore, nitrogen and phosphorus runoff from vegetable fields is an important ...
Embodiment 2
[0040]The construction method of intercepting the nitrogen and phosphorus loss system of the facility vegetable field in the water network area: introduce the runoff of the facility vegetable field into the ecological ditch, absorb the nitrogen and phosphorus in the runoff through the ecological ditch, reduce the water speed, and settle the sediment; the cross section of the ditch is U-shaped , The ditch is composed of a plurality of U-shaped cement pipes arranged in length × width × height = 40 × 50 × 60 (cm), and the bottom of the middle junction of every two U-shaped pipes is connected by cement pouring, and the side wall is left with a 30cm wide soil At the bottom of the ditch, a growth box filled with adsorption materials with strong adsorption capacity for nitrogen and phosphorus is placed at a distance of 80 cm. Bermudagrass and nitrogen-efficient rice Guidan No. 4; the treated vegetable field drainage is intercepted by the ecological ditch and then poured into the sump,...
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