Change tradition

(1) The eco-agriculture of the five-ring industrial chain has changed the traditional economic model, taken the road of eco-economy, and mainly implemented the principle of circular economy.

(2) From the analysis of the main functions of the ecosystem, the main purpose of establishing eco-agriculture with five-ring industrial chain is to make the materials and energy assimilated by producers flow more to the parts that are beneficial to human beings.

(3) The main components of gas produced in biogas fermentation are CH4 and CO2. ..

(4) The eco-engineering principles followed by eco-agriculture in the five-ring industrial chain are mainly the principle of material circulation, the principle of systematization and engineering, the principle of integrity and the principle of species diversity.

(5) The advantages of this eco-agriculture mainly lie in reducing environmental pollution and improving comprehensive benefits.

So the answer is:

(1) circular economy

(2) The materials and energy assimilated by producers flow more to the parts that are beneficial to human beings.

(3)CH4 (methane)

(4) The principle of material recycling, the principle of systematics and engineering, the principle of integrity and the principle of species diversity (if you answer three questions correctly, you will get one point)?

(5) reduce environmental pollution? Improve comprehensive benefits.