37results about How to "Prevent wind erosion" patented technology

The invention provides a method for comprehensive treatment of a moving dune through top sealing, slope fixing and side locking. The method comprises top sealing, slope fixing and side locking of the moving dune. Top sealing is to cover the top of the moving dune with a covering net, so that the original morphological characteristics of the top of the moving dune are protected; the overall wind speed of the moving dune is lowered; the moving rate of the moving dun is reduced. Slope fixing is carried out by adopting a sand fixing box for fixing the slope of the moving dune, so that sand burial and wind erosion can be effectively prevented; the wind speed of the earth surface is lowered; crust formation and plant growth are facilitated; recovery of an ecological system of the slope of the moving dune is promoted. Side locking is to arrange three sand blocking fences on the field among hills, so that the sand source is intercepted; the frequency that slop fixing measures and the field among the hills are buried by sand is reduced; the wind speed of the field among hills is lowered; the ecological system of the field among the hills is protected. According to the top sealing, slope fixing and side locking modes provided by the invention, a wind-sand moving is effectively prevented; the moving dune is fixed; sand damage is treated fundamentally; the ecology is protected; the method is sustainable; large-area popularization and application are easy to achieve.

A deep soil loosener with laterally bent blades is composed of machine frame, laterally bent deep loosening blades with 40-50 deg of inclination and parabolic shape, ground wheels, and grass cutting disks. One grass cutting disk is matched with one latterally bent deep loosening blade and is arranged in the front of said loosensing blade for preventing the straw or grass from winding on the loosening blade. Its advantages are low interference to cultivated soil layer and smooth ground surface.

The invention relates to a method of land consolidation, in particular to a water collection irrigation system for gullies and slopes in the loess platform area; it solves the problem of soil erosion caused by rainfall in summer and autumn in the ditch and slopes of the loess platform area, which easily causes field sills to collapse, and winter and spring Unable to meet irrigation water demand, leading to technical problems that reduce land productivity. The technical solution of the present invention is: a water collection and irrigation system for ditch slopes in the loess plateau area, which is special in that it includes a terraced field water collection unit and a drainage and irrigation system; the terraced field water collection unit includes a plurality of fields arranged in a ladder shape The field block includes the field ridge and the field surface; the field ridge is set on the side of the field surface away from the upper-level field block; the middle part of the field ridge is provided with a drainage ditch, and the drainage ditch divides the field ridge into an inner field ridge and an outer field ridge; The seepage hole of the drainage ditch; the side of the field surface close to the field ridge is lower than the side away from the field ridge; at the same time, the invention also provides a construction method of a water collection and irrigation system for ditch slopes in the loess plateau area.

The present invention relates to the technical field of crop cultivation, and in particular to a method of plowing land under the condition of full coverage of corn stalks on the surface, comprising the following steps: working in stages and layers, directly plowing the plow layer and plow bottom layer in the autumn of the first year, Change the distribution state of the straw; reorganize the plowing layer within the sowing depth range before sowing in the spring of the second year to build a composite seed bed. The invention proposes a plowing method under the condition that the corn stalks are fully covered on the surface, which is beneficial to soil water and moisture retention, increases the temperature of the seed bed, and prolongs the growing period of the crops.

The invention relates to a method for controlling wind erosion of nursery stock bases in desert areas. The method relates to a nursery stock sand storm protection cover which comprises a cover body, a cover edge and a fixed drill rod, wherein the cover body is shaped like a round table; the cover edge is arranged at the bottom of the cover body; and the fixed drill rod is inserted into a fixed hole on the cover edge and then fixed in soil on the earth surface. After a nursery stock is planted in a desert area, the nursery stock sand storm protection cover is taken, and the cover body and a gap on the side wall of the cover edge are slightly unfolded to horizontally move toward the nursery stock; branches of the nursery stock are collapsed and pass through the gap; the cover body is arranged around the nursery stock; the protection cover is rotated to ensure that the gap on the protection cover is toward the downwind direction of the local predominant wind direction; and along with the growth of the nursery stock, when the sand storm protection cover limits the growth of the trunk, the cover body and the gap on the side wall of the cover edge are unfolded and then the protection cover is taken off. The method can be used for the forestation in desert areas with the advantages of improving the micro environment of nursery stock bases, preventing the wind erosion of the soil at the roots of the newly planted seedlings and improving the nursery stock survival rate, has a wide application range and can be widely applied to the construction projects of ecological forests and economic forests.

The invention discloses a method for carrying out rapid face excavation construction on a loess tunnel by double rows of small conduits, which comprises the following steps of: excavation and supporting of a side front slope, i.e. after completing earth excavation of the side front slope, immediately carrying out temporary protection of suspended net shotcrete on the side front slope; construction of a protection arch, i.e. excavating a tunnel face of an upper step tunnel opening, carrying out measure lofting, arranging the section steel frame protection arch from the arch top to the outside of the tunnel in a range of above a springing line and spraying concrete to the protection arch to form protection arch concrete; construction of advance supporting of the double rows of small conduits, i.e. drawing small conduit hole sites which need to be arranged on the tunnel face, then arranging the double rows of small conduits at the small conduit hole sites in the range of an arch part of the opening, carrying out grouting on the arch part by a grouting machine through the small conduits, and blocking off orifices of the small conduits after finishing grouting; and excavation and supporting of a tunnel body, i.e. after the protection arch concrete achieves the design strength and the construction of the double rows of small conduits in a first circle of the tunnel opening is completed, starting the loess excavation and supporting operation of the tunnel body. The method disclosed by the invention has a simple construction process and is easy to operate. The overexcavation phenomenon is effectively reduced. The construction cost is reduced.