Structure for improving utilization efficiency of rainfall in forest land in loess hilly area and increasing nutrients

Abstract

The utility model discloses a structure for improving the utilization efficiency of rainfall and increasing nutrients of a loess hilly area forest land, which comprises a ridge mechanism, a land leveling area and a permeation promoting mechanism, and is characterized in that the ridge mechanism comprises a trapezoidal ridge arranged outside a gentle slope platform, and a water chute is arranged at the top of the ridge; the land leveling area is arranged on the inner side of the ridge mechanism and comprises a gentle slope platform with a tree as the center, and the surface of the gentle slope platform is covered with a litter layer; the infiltration promoting mechanism comprises a plurality of infiltration promoting holes formed in the land leveling area, a biochar layer and a litter mixing layer are arranged in each infiltration promoting hole, and the bottom of each infiltration promoting hole extends into the soil. By integrating the permeation promoting holes, the biochar layer and the litter layer and combining soil preparation measures, invalid evaporation is reduced, the supply efficiency of rainfall to deep soil is improved, nutrient circulation is promoted, and the carbon sequestration capacity of the soil is remarkably enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to loess hilly region forest land rainfall utilization efficiency and the structure of increasing nutrient, concretely is a kind of structure of improving loess hilly region forest land rainfall utilization efficiency and increasing nutrient. BACKGROUND

[0002] Loess hilly region is the important ecological fragile zone of our country, its soil structure is loose, organic matter content is low, leading to rainfall utilization rate is low, water and soil loss is serious.In addition to the evaporation of this region, surface soil moisture is rapidly lost, further intensifies soil drought and nutrient loss.In addition, loess region soil carbon storage is low, carbon sequestration ability is weak, seriously restricts the sustainable development of forest land and ecological function promotion.Traditional land preparation measures can partially improve moisture conditions, but it is difficult to take into account nutrient cycling and carbon sink promotion.There is an urgent need for a comprehensive structure to solve the above problems. SUMMARY

[0003] The technical problem to be solved by the utility model lies in providing a structure for improving rainfall utilization efficiency and increasing nutrient in loess hilly region forest land, by integrating the infiltration hole, the biochar layer and the litter layer, combining with the land preparation measures, reducing the ineffective evaporation, improving the rainfall supply efficiency to the deep soil, promoting the nutrient cycling, and significantly enhancing the soil carbon sequestration ability.

[0004] The utility model discloses a structure for improving rainfall utilization efficiency and increasing nutrient in loess hilly region forest land, including land ridge mechanism, land leveling area and infiltration mechanism, wherein:

[0005] The land ridge mechanism includes trapezoidal land ridge arranged outside the gentle slope platform, and the land ridge top is provided with a water guide groove;

[0006] The land leveling area is arranged in the inner side of the land ridge mechanism, and includes a gentle slope platform with trees as the center, and the surface of the gentle slope platform is covered with a litter layer;

[0007] The infiltration mechanism includes a plurality of infiltration holes arranged in the land leveling area, and the infiltration holes are provided with a biochar layer and a litter mixed layer, and the bottom of the infiltration hole extends to the inside of the soil.

[0008] Preferably, the water guide groove is provided with a sliding groove at the left and right ends, and a sliding cover is arranged on the sliding groove.

[0009] Preferably, it further includes a water interception ditch, and the water interception ditch is arranged at the two sides of the land ridge mechanism.

[0010] Preferably, the water guide groove is connected with a water drainage groove at the left and right ends, and the other end of the water drainage groove is communicated with the water interception ditch.

[0011] Preferably, the bottom of the water interception ditch is paved with a gravel layer.

[0012] Preferably, a filter screen is arranged in the water guide groove.

[0013] Preferably, the diameter of the infiltration hole is 10-15 cm, the depth is 30-60 cm, and the distance between adjacent infiltration holes is 1.5-2 m.

[0014] Preferably, a sealing strip is arranged at the connection between the chute and the cover.

[0015] The beneficial effects of the structure for improving rainfall utilization efficiency and increasing nutrients in loess hilly region forest land are as follows:

[0016] Improve rainfall utilization efficiency: By setting the ridge mechanism and water guide groove, rainfall water can be effectively collected and guided, water loss is reduced, and rainfall resources are maximally utilized.

[0017] Enhance soil nutrients: The biochar layer and litter mixed layer arranged in the infiltration hole can improve soil structure, promote water and nutrient penetration, increase organic matter content in soil, and further improve soil fertility.

[0018] Prevent water and soil loss: The setting of the ridge and the water interception ditch effectively prevents water and soil loss caused by rainwater runoff, helps to maintain the structure and nutrients of the soil, and creates a good environment for tree growth.

[0019] Promote ecological circulation: Guiding water and nutrients at the same time, using natural materials such as litter, can promote ecological circulation, maintain biodiversity, and enhance the stability of the forest ecosystem.

[0020] Easy to implement and maintain: The structure is simple, easy to implement and maintain, and enhances the feasibility of forest land management, which has good guiding significance for forestry workers. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic diagram of the structure for improving rainfall utilization efficiency and increasing nutrients in loess hilly region forest land;

[0022] Figure 2 It is a top view schematic diagram of the structure for improving rainfall utilization efficiency and increasing nutrients in loess hilly region forest land;

[0023] Figure 3 It is a structure schematic diagram of the structure for improving rainfall utilization efficiency and increasing nutrients in loess hilly region forest land;

[0024] Figure 4 It is a structure schematic diagram of the structure for improving rainfall utilization efficiency and increasing nutrients in loess hilly region forest land;

[0025] In the figure:

[0026] Ridge mechanism 1, trapezoidal ridge 11, water guide groove 12, chute 13, sliding cover 14, drainage groove 15;

[0027] Land leveling area 2, gentle slope platform 21, litter layer 22;

[0028] Penetration promoting mechanism 3, penetration promoting hole 31, biochar layer 32, litter mixing layer 33, water interception ditch 4. DETAILED DESCRIPTION

[0029] In order to make the technical scheme of the utility model easier to understand, the technical scheme of the utility model is described clearly and completely in the form of specific embodiments in combination with the drawings.

[0030] Embodiment 1:

[0031] As Figures 1-4 shown, the Figures 1-4 structure of the utility model for improving the rainfall utilization efficiency and increasing the nutrients in the loess hilly area forest land comprises a ridge mechanism 1, a land leveling area 2 and a penetration promoting mechanism 3, wherein:

[0032] The ridge mechanism 1 comprises a trapezoidal ridge 11 arranged outside the gentle slope platform 21, and a water guide groove 12 arranged at the top of the ridge.

[0033] The land leveling area 2 is arranged inside the ridge mechanism 1 and comprises a gentle slope platform 21 centered on a tree, and a litter layer 22 covering the surface of the gentle slope platform 21.

[0034] The penetration promoting mechanism 3 comprises a plurality of penetration promoting holes 31 arranged in the land leveling area 2, a biochar layer 32 and a litter mixing layer 33 arranged in the penetration promoting holes 31, and the penetration promoting holes 31 extend to the inside of the soil.

[0035] The water guide groove 12 is provided with a chute 13 at both ends, and the chute 13 is provided with a sliding cover 14.

[0036] Further comprising a water interception ditch 4 arranged outside the ridge mechanism 1.

[0037] The water guide groove 12 is provided with a drainage groove 15 at both ends, and the other end of the drainage groove 15 is communicated with the water interception ditch 4.

[0038] The bottom of the water interception ditch 4 is paved with a gravel layer.

[0039] A filter screen is arranged in the water guide groove 12.

[0040] The diameter of the penetration promoting hole 31 is 10-15 cm, the depth is 30-60 cm, and the distance between adjacent penetration promoting holes 31 is 1.5-2 m.

[0041] A sealing strip is arranged at the connection between the chute 13 and the sliding cover 14.

[0042] In the loess hilly region, a piece of forest land is implemented. According to the structural design of the patent, the implementation steps are as follows:

[0043] The land ridge mechanism 1 is constructed: a trapezoidal land ridge 11 is set up at the edge of the forest land, and a water guide groove 12 is arranged at the top of the land ridge to facilitate the collection and guidance of rainwater. The two ends of the water guide groove 12 are provided with sliding grooves 13, and sliding covers 14 are installed to realize the regulation and guidance of liquid water.

[0044] The land leveling area 2 is formed: a gentle slope platform 21 is established inside the land ridge, and a thick layer of litter layer 22 is covered on the gentle slope platform to provide conditions for water retention and soil covering during rain, and prevent soil evaporation and runoff.

[0045] The infiltration mechanism 3 is installed: a plurality of infiltration holes 31 are dug in the land leveling area, with a hole diameter of 10-15 cm and a depth of 30-60 cm, to ensure that rainwater quickly penetrates into the soil through the infiltration holes and fully interacts with the biochar layer 32 and the litter mixed layer 33, enhancing soil fertility and water retention capacity.

[0046] The water interception ditch 4 is built: the water interception ditch 4 is provided on both sides of the land ridge mechanism, and the bottom of the water interception ditch 4 is paved with gravel layer to help collect and guide the surrounding rainfall to the predetermined place, prevent water and soil loss and provide more water for plants, and the sliding grooves 13 are provided on both sides of the water guide groove 12, and the sliding covers 14 are arranged on the sliding grooves 13, when the water guide groove 12 needs to be discharged due to overfilling, only the sliding covers 14 on both sides are pulled out, and the water flow can enter the water interception ditch 4 along the drainage groove 15 connected with the water guide groove 12

[0047] Monitoring and maintenance: regularly clean the water guide groove 12 and infiltration holes 31, and monitor the soil moisture and nutrient level, and adjust the management measures in time according to the plant growth.

[0048] Through the above implementation steps, the structure significantly improves the rainfall utilization efficiency of the forest land in the loess hilly region, and promotes the accumulation of soil nutrients, laying a foundation for subsequent vegetation restoration and ecological construction.

[0049] It should be noted that the embodiments described herein are only part of the embodiments of the present application, not all implementation modes of the present application, the embodiments are only exemplary, and the role is only to provide a more intuitive and clear way to understand the content of the present application, and is not a limitation on the technical solutions of the present application. Without departing from the concept of the present application, all those skilled in the art can think of other implementation modes without creative labor, and other simple replacements and various changes of the technical solutions of the present application, all belong to the protection scope of the present application.

Claims

1. A structure for improving rainfall utilization efficiency and increasing nutrients in forest land in loess hilly areas, characterized in that, Including the land ridge mechanism (1), the land flattening area (2) and the infiltration promoting mechanism (3), wherein: The land ridge mechanism (1) includes a trapezoidal land ridge (11) arranged outside the gentle slope platform (21), and a water guide groove (12) is arranged on the top of the land ridge; The land flattening area (2) is arranged inside the land ridge mechanism (1) and includes a gentle slope platform (21) centered on trees, and the surface of the gentle slope platform (21) is covered with a litter layer (22); The infiltration promoting mechanism (3) includes a plurality of infiltration promoting holes (31) arranged in the land flattening area (2), and a charcoal layer (32) and a litter mixed layer (33) are arranged in the infiltration promoting hole (31), and the bottom of the infiltration promoting hole (31) extends to the inside of the soil.

2. The structure for increasing rainfall utilization efficiency and nutrients of forest land in the loess hilly region according to claim 1, characterized in that, The left and right ends of the water guide groove (12) are provided with a sliding groove (13), and the sliding groove (13) is provided with a sliding cover (14).

3. The structure for increasing rainfall utilization efficiency and nutrients of forest land in the loess hilly region according to claim 1, characterized in that, Further comprising a water intercepting ditch (4), the water intercepting ditch (4) is arranged outside the land ridge mechanism (1).

4. The structure of claim 3, wherein the structure is characterized in that, The left and right ends of the water guide groove (12) are provided with a water draining groove (15), and the other end of the water draining groove (15) is communicated with the water intercepting ditch (4).

5. The structure of claim 3, wherein the structure is characterized in that, The bottom of the water intercepting ditch (4) is paved with a gravel layer.

6. The structure of claim 1, wherein the structure is characterized in that, The water guide groove (12) is provided with a filter screen.

7. The structure of claim 1, wherein the structure is characterized in that, The diameter of the infiltration promoting hole (31) is 10-15 cm, the depth is 30-60 cm, and the distance between adjacent infiltration promoting holes (31) is 1.5-2 m.

8. The structure of claim 2, wherein, The connection between the sliding groove (13) and the sliding cover (14) is provided with a sealing strip.

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