Design And Implementation Of Rich Nutrition Water Process System By Planting And Harvesting Grazing In Rotation

With the break-through of agriculture's environmental engineering, the protected agriculture develops rapidly, becoming the agricultural production technology of a kind of intensification with very high degree. Though the improvement which intensifies the degree makes the limited cultivated area gets abundant use, has improved unit's output, and has improved the agricultural industry's scale greatly too, but the density of wastes produced from this accumulates larger, especially the waste water of rich nutrition produced under the agricultural working condition of protected cultivates. If we adopt the industrialized sewage disposal equipment to, the cost will increase agricultural production greatly, and reduce the agricultural production income greatly, even lose the money. Traditional dilution and discharge are that can cause heavy environmental pollution, and because agricultural waste water contain a large amount of nutriment, which can utilize two times and reduce the input-output ratio of agricultural production, reduce the production cost. From the economic and using point of view of nutriment, the ecosystem of coupling helps the circulation utilizing of energy and the recovery of nutriment even more in agriculture's economic production, reducing or dispelling the discharge of pollution, reaching remarkable economic benefits, ecological benefits and social benefit.This research bases on " design and implementation of agriculture's rich nutrition water process system ", accepts the culture principle as design considerations with the rotating plant and harvest of crop and NFT (nutrient film technology) -cultured terrestrial grasses, by means of turning and designing adopting in agricultural machinery, we can design agricultural facilities and prototype equip equipment. It can control the pollution for livestock and poultry and the non-point source pollution, protect source of water-surface water and underground source of water of protection zone, and become the equipment dealing with pollution of the system of ecologicalagriculture that can be accepted by market. The concrete research contents are as follows:(1) The designs of technological process of the rich nutrition water filtration by grass, and finishing the flow chart with feasible procedure. In this technological process, we can imitate ecosystem structure and function coordinating each other and material regeneration. Use the ecological process without waste as livestock and poultry (aquatic) - grass comprehensive production system to replace the traditional crafting. Realize rational abundant use of whole ecosystem resource and continuous utilization, improve the resource utilization ratio, and reach the sustaining greatest ecological efficiency and cleaning of the environment.(2) Study principle and result that the rich nutrition water grass filtrates. Study through the principle, we can clarify the biological characteristic that the grass absorbs nutrition, therefore come to guide the design work of real facilities, design the device of the rotating plant and harvest of crop intermittently for cleaning the rich nutrition better.(3) Design the suitable infrastructure for the grass to grow and the wastewater treatment. According to the principle of the rotating plant and harvest of crop intermittently for cleaning the rich nutrition, we design different mode of grass production, form different plan of design of infrastructure. Facilities need to adopt the assembling type structure, and form the production facility of factory ecological agriculture, which suits the modern peasant household's large-scale production. The ones that must consider are: First, the cost should be low, suitable for popularizing in the countryside; second, it can be regarded as a part of factory agricultural production; third, it should accord with the specification requirement of the integrative ecosystem of the animals and plants cultivation.(4) Design the transmission mechanical system of the suitable grass reaped. According to the request of agricultural production of...