Method for building ecological interception ditch plant community by taking Phalaris canariensis as dominant species

A technology of plant communities and dominant species, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve problems such as difficult to achieve annual purification effect, short plant growth period, and affect drainage, and achieve improved Annual purification effect, increase the landscape effect, avoid the effect of poor drainage

Inactive Publication Date: 2011-04-06
JIANGSU UNIV
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Problems solved by technology

[0005] The present invention is for overcoming the deficiencies in the prior art, by selecting the dominant species of the plant community of the ecological interception ditches by selecting the weed, overcomes the fact that the plants of th

Method used

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Embodiment Construction

[0014] The project is implemented in a farmland drainage ditch along Taihu Lake in Jiangsu Province. The ditch is 2000m long, 2.5m wide, 1.2m deep, 1.5-2.0m long, and 3.5m high along the way. The drainage ditches for hectares of farmland merge into a 30m wide main drainage canal at the end. The height difference of the ditch changes evenly and slowly. There are 4 low-water retaining dams in the ditch with a height of 0.8m. The total vegetation area of ​​the ditch bottom and side slope is 5000m 2 , among which, the planting area of ​​sage grass is 3000m 2 . The main cultivation process is:

[0015] (1) At present, there is basically no sale of sage grass seeds in the market, and the grass seeds must be harvested in the wild by themselves. Grass is a spike, the seeds are small, the filling time is short, and it is easy to shed after maturity, so the grass seeds should be harvested in time. The best harvesting time is when the green color of the ears fades and turns yellow. A...

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Abstract

The invention discloses a method for building farmland nitrogen phosphorus ecological interception ditch plant community by taking Phalaris canariensis as dominant species and relative cultivating technologies, belonging to the technical field of agricultural non-point pollution control, water environment management and the like. The method provides a series of technical measures about seed collection and storage, seeding, running of water full of fertilizer, wintering management, cutting harvest and the like. The application of the technology can effectively solve the problem that the present ecologic interception ditch has unsmooth drainage in rain season caused by the unreseanable plant community structure, the interception ditch built according to the method is full of green in four seasons, and the removing efficiencies of the nitrogen and the phosphorus respectively increase 10.2% and 6.8% in comparison with the present ecologic interception ditch; in addition, new Phalaris canariensis feeding stuff can be obtained in 12.6kg/m<2>; therefore, the invention has higher environmental benefit, economic benefit and social benefit.

Description

Technical field: [0001] The invention relates to a technology and method for constructing an ecological interception ditch plant community by using scorpion grass as a dominant species to realize ecological interception of nitrogen and phosphorus loss in agricultural non-point sources, and belongs to the technical fields of agricultural non-point source pollution control and water environment treatment. Background technique: [0002] The water environment improvement of the Taihu Lake Basin is one of the key projects of the current national environmental improvement work. The three provinces and one city around the Taihu Lake have introduced a series of treatment measures to ensure the safety of the water environment of the Taihu Lake. Among them, Jiangsu Province takes the ecological interception ditch project as an effective measure to control the loss of nitrogen and phosphorus in farmland, and vigorously promotes and applies it in the provinces and cities along Taihu Lake...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 付为国李萍萍崔波
Owner JIANGSU UNIV
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