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Farmland drainage ditch as agricultural nonpoint source pollution sources and rivers , lakes and other water body transition zone, has a significant impact the entire farmland ecosystem , as well as the surrounding aquatic ecosystems . Status quo for farmland drainage ditch , working on developing a new type of the channel embankment material - permeable type straw concrete , and work together to build a complete farmland drainage ditch seepage through the embankment material and the organic combination of the drainage blanket material , filter system , by physical adsorption of the infiltration system , absorbed by plants , microbial degradation , to reduce agricultural nonpoint source pollution , the purpose of improving the agro-ecological environment . The results of this study are as follows : (1 ) the definition of farmland drainage ditch infiltration system , expounded the meaning of the farmland drainage ditch infiltration system , analysis of the composition , features, and functions of the system . (2) by comparing the test study , analysis permeable type straw concrete physical performance , clear the permeable type straw concrete main factors , as well as the various factors range , on this basis , and further by orthogonal experiment the better fit than the permeable Stalk concrete . ( 3 ) discusses the drainage function and its types of cushion materials , comprehensive permeable performance , drainage effect , durability and economy by comparing the test , to determine the optimal permeable drainage material combinations with ordinary concrete unilateral the cost of the materials obtained have a very significant economic effect . (4 ) through the permeable Stalk concrete immersion test , the analysis of the loss of the material surface alkali substances ; through the microbial assay , analysis of the material environment for the growth of microbial communities ; nitrogen and phosphorus through the the farmland channel percolation system intercept the simulation test , analyze the effect of channel percolation system constituted by the material of the farmland of the agro-ecological environment . Farmland channel percolation system , rich farmland soil and water environment and ecosystem research , provides a new way of thinking for the control and removal of agricultural runoff pollution .
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