What are the models of ecological agriculture?

What are the models of ecological agriculture? Eco-agricultural model is a kind of agro-ecosystem formed in agricultural production practice, which takes into account the economic, social and ecological benefits of agriculture, as well as optimized structure and function. In order to further promote the development of eco-agriculture, in 2002, the Ministry of Agriculture collected 370 eco-agricultural models or technical systems from the whole country. Through repeated discussion by experts, it was selected and tested by practice. There are ten representative types of ecological models, and these ten types of ecological models will be formally promoted as the key task of the Ministry of Agriculture in the future.

Ten models of Ecological Agriculture

1. The "four-in-one" ecological model and supporting technologies in the north.

2. The ecological model and supporting technology of "pig-marsh-fruit" in South China.

3. Ecological model and supporting techniques of agriculture, forestry and animal husbandry in plain.

4. Ecological model and supporting technology of grassland ecological restoration and sustainable utilization.

5. Ecological planting mode and supporting technology.

6. Production mode and supporting technology of ecological animal husbandry.

7. Ecological fishery model and supporting technology.

8. Comprehensive management model and supporting technology of small watershed in hilly and mountainous areas.

9. The model and supporting technology of facility ecological agriculture.

10. The mode and supporting technology of sightseeing ecological agriculture.

What are the types of eco-agricultural models?

1. Spatio-temporal structure type: this is an agro-ecosystem reasonably constructed according to the biological and ecological characteristics of biological populations and the mutually beneficial symbiotic relationship between organisms, so that biological populations in different ecological positions are in the right place in the system, complement each other, and make more full use of solar energy, water and mineral nutrient elements. it is a three-dimensional structure with multi-sequence in time and multi-level in space. Its economic and ecological benefits are good. Specifically, there are fruit forest land three-dimensional intercropping model, farmland three-dimensional intercropping model, water area three-dimensional culture model, farmers' courtyard three-dimensional planting model and so on.

2. Food chain: this is a kind of agricultural ecosystem with virtuous cycle designed according to the law of energy flow and material circulation of agro-ecosystem. The output of one production link in the system is the input of another production link, which makes the waste in the system recycled many times, so as to improve the energy conversion rate and resource utilization rate, and obtain greater economic benefits. and effectively prevent agricultural wastes from polluting the agricultural ecological environment. Specifically, there are the material recycling mode in the planting industry, the material recycling mode in the aquaculture industry, the material recycling mode of the combination of planting and processing, and so on.

3. The comprehensive type of spatio-temporal food chain: this is an organic combination of spatio-temporal structure and food chain, so that the substances in the system can be efficiently produced and used for many times. it is a mode type of moderate input, high output, less waste, no pollution and high benefit.