Survey Of The Sichuan Basin And The Mountain Winter Paddy Field Use Of Ecological Agricultural Model

Winter paddy field stored water in long-term, it produced only one season rice generally which was thought to be low-yielding fields. What is more, its multiple-crop index and yield are low, limiting the use of it. But in our province, winter paddy field still occupies a large proportion, so the three-dimensional development of winter paddy field attaches very important. People start to make some achievements in this field. The paper makes very careful investigations on ecological agricultural of winter paddy field in MuMen town of WangCang county by the use of energy flow system and input-output methods. And evaluating the energy flow and the characteristics of different winter paddy ecological agriculture mode, giving some suggestions based on the way of energy flow and the energy structure of different modes, so as to improve the output of the system, reduce the adverse impact of the limiting factors of agricultural production, increase the input of energy and improve the efficiency of the model production by adjusting the input proportion, put agricultural ecosystem in the virtuous cycle in this model. Provide basis for the further development of winter paddy ecological agriculture utilization.In this file, the winter paddy ecological agriculture utilization mode is used as the research object. The previous winter paddy ecological agriculture utilization mode is investigated and evaluated qualitatively and quantitatively in the Mumen Town Wangcang County. Summarize the4common and high-efficiency models and draw energy flow diagram for each model; and analyze the energy input-output of each kind of farmland circulation pattern.(1)the energy conversion index of ecological agriculture utilization mode is higher in winter paddy. Especially, the using of the duckweed can largely reduce the fertilizer and farm manure application. But it will reduce the indirect energy-output ratio, mainly because of duckweed breeding and management need a big of labor power;(2)After analyzing the using of different ecological agriculture patterns of winter paddy in Mumen town, Wangchang county, from the perspective of energy-benefit, the best winter paddy field pattern is the "rice-fish-duck" mode, the second is the "rice-fish duckweed" model, and then is the " rice-duck" mode, the last is the "rice-duck-duckweed" mode;(3), in ecological agriculture patterns of winter paddy in Mumen town, the organic fertilizer is used more than the inorganic fertilizer. And in the major of organic fertilizer using is farmyard manure; the major of inorganic fertilizer using are pesticide and chemical fertilizer. The overall features are:①the using of inorganic fertilizer is low.②the using of organic fertilizer is high,③the energy conversion index and the using ratio of organic to inorganic is relatively high but still having improve space,④he capital input-output ratio is still not high.