Sloping land management practices and effectivenes

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Sloping governance measures and benefits of integrated technology

Degree of 40 ~ 50cn: t. Proved. Straw mattress with drainage channels in the block on the embankment. The flow reaches 0.3m / s,[link widoczny dla zalogowanych], the flow rate in the 2m / s or so, still do not produce erosion of biological embankment section. 2.3 Engineering measures (1) of arable land in the slope design and construction of waterlogging. To promote drainage technology with light and shade, that open ditch drainage and underground underground pipe (holes) the combination of drainage works. Settings in the open ditch drainage system is generally not used, but with focus on drainage. Achieve high-ranked high water, low water low row. In the open ditch drainage design, drainage control to minimize each area, thereby reducing traffic in the design of the drainage ditch, a drainage channel in the control area of not more than 2OO ~ 300 ha area of secondary drainage channel control generally no more than 70 hectares, the water flow rate is generally less than 0.2 ~ 0.3m. / S is more suitable for water without damaging the natural vegetation Gangou the case of multiple use of the natural water line. Diffuse the water flow naturally. Dark schedule works. Or rat holes with corrugated plastic pipe and drainage ditches connected,[link widoczny dla zalogowanych], to reduce the water table and reduce soil tilth stagnant water and improve the surface water infiltration and reduce surface water runoff. Water using this method of combining light and shade,[link widoczny dla zalogowanych], soil erosion can reduce the incidence of water erosion and gully erosion, but also get a good drainage effect. (2) of the flow, velocity and gradient are large drainage channel. Used in the design and construction engineering or construction solutions to water and drainage channel lining against erosion problems after several years of practice, we generally use the following three forms. First, crossing the culvert with the construction of the first field or type in straight sets after culvert or water, or poor general control of 0.5 ~ 1.5m; Second, non-woven fabrics and cement board section of embankment slope Lian, and its practice is to plastic surgery steep section of road ditch holding good Xianpu sand filter 1Ocm,[link widoczny dla zalogowanych], and holes and a layer of non-woven, with the cast or precast reinforced concrete slab of reinforced concrete slabs do embankment thickness 1Ocn: t; third is in the fall Lian large difference between the construction of multi-slope segment of reinforced concrete or water, or poor control in general less than 1.5m (3) on the long slope, steep slope, the larger of cropland, set up by the cross slope on sloping land intercepting ditch way to play split r potential, reduce the slope water runoff processes, reduce the flow rate, only play fat and reduce soil erosion in sloping land the role of Kong. 3 Sloping Farmland benefit analysis (1) read from the agricultural production conditions. On sloping land governance, improve soil physical properties r, r soil pit decreased weight, increased r soil porosity, soil moisture and temperature change significantly enhance r soil permeability, air permeability. For crop growth and development to provide good conditions for r; increase r and discharge of surface water infiltration rate. R sowing and harvest to improve agricultural working conditions during the period (2) benefit from the ecological perspective, through the sloping land erosion and integrated control of waterlogging. The North An Reclamation of cropland showed r \water capacity. To provide better crop growth environment and promoting safety r North Reclamation Area moving to a better ecological environment, maintain ecological balance r. (3) from the economic perspective, because of the sloping land to r comprehensive platform management, safety and the reclamation area to the North steadily increasing crop production year by year. There r Liangdou and other economic crops yields. Stability in the fortunate situation of total production of cultivated land after treatment, the average yield per hectare of grain 450 ~ 750kg, the average annual rate of food production 0O more directly from the slope of access to agricultural land management to increase profits on the 1,800 million. (4) from the social perspective, the former management of cropland, soil erosion, fertility decline caused by land, topsoil waterlogging affected crop growth, impact of agricultural operations, agricultural production is \low efficiency, \After treatment, the originally poor, backward agricultural production team, most of whom became, health teams \material living conditions,[link widoczny dla zalogowanych], cultural and living conditions also have a relatively significant improvement, and now the production team of social stability, the masses of workers working and living comfort. conclusion. on sloping farmland of governance, should be adapted to local conditions, from the actual situation of the local , the use of farming, biology, engineering and other technical measures of the organic Shu with Taiwan. farmland with soil erosion and topsoil waterlogging comprehensive treatment. in order to obtain better treatment results, sloping land management in order to achieve the fundamental purpose of the service of agriculture .