Construction method of system for preventing and controlling water and soil loss of white mulberries in purple-soil dry slope land of Three Gorges reservoir region

A technology of the Three Gorges reservoir area and a construction method, applied in the field of agricultural environmental pollution control, can solve the problems of time-consuming and labor-intensive economic and ecological benefits, high labor costs, and high ecological risks, so as to beautify the environment, disperse surface runoff, and promote optimal The effect of development

Active Publication Date: 2016-02-24
SOUTHWEST UNIVERSITY
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Engineering measures include building water-blocking ditches, hillside intercepting ditches, slope water storage projects, and terraced fields. Such measures can achieve the purpose of water and soil prevention and control to a certain extent by retaining soil and water storage, but there are problems such as large amount of engineering, time-consuming and labor-intensive problems. Disadvantages such as unsatisfactory economic and ecological benefits
Ecological measures are divided into soil measures and agricultural measures. Soil measures refer to the application of chemical compound...

Method used

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  • Construction method of system for preventing and controlling water and soil loss of white mulberries in purple-soil dry slope land of Three Gorges reservoir region
  • Construction method of system for preventing and controlling water and soil loss of white mulberries in purple-soil dry slope land of Three Gorges reservoir region

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Embodiment 1

[0040] Constructing the “four-side sangger prevention and control system” of the purple soil dry slope mulberry prevention and control system in the Three Gorges Reservoir area: select the purple soil dry slope land in the Three Gorges Reservoir area with a slope less than 25°, slope width greater than 4m, and unlimited slope length. The slope width and length of the dry slope land in the reservoir area are divided into upper and lower sangger. The upper sangge specification is slope width×(6~8)m, the lower sanger specification is slope width×(3~5)m, and the lower mulberry The number of grids is not less than one third of the upper Sanger number. Transplant mulberry seedlings around the sangger to construct a protective belt for soil erosion. The construction and management of the mulberry belt adopts mulberry seedling transplantation-dwarf pruning method, that is, the mulberry seedlings are transplanted around December of the first year, and planted vertically according to the...

Embodiment 2

[0042] Constructing the "extended mulberry belt prevention and control system" of the purple soil dry slope mulberry prevention and control system in the Three Gorges Reservoir area: select the dry slope land in the Three Gorges Reservoir area where the slope is less than 25°, the slope width is greater than 3m, and the slope length is unlimited. Contour mulberry belts are constructed from bottom to top. The specification of mulberry belts is that the belt length is equal to the slope width, and the belt spacing gradually increases according to the classification (the belt distances of the first, second, and third mulberry belts are 1~3m, 5~7m, respectively , 9~11m, each level consists of several mulberry belts; among them, the number of second-level mulberry belts is not less than one-third of the number of third-level mulberry belts, and the number of first-level mulberry belts is not less than the second level 1 / 3 of the number of mulberry belts). The cultivation and managem...

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Abstract

The invention discloses a construction method of a system for preventing and controlling water and soil loss of white mulberries in purple-soil dry slope land of the Three Gorges reservoir region. An ecosystem for preventing and controlling water and soil loss is constructed by the mode of planting white mulberries. The method comprises following steps of: 1), selecting purple-soil dry slope land of below 25 degrees and over 3cm in width and constructing multiple cross slopes along contour lines; planting white mulberries on partial cross slopes in order to form mulberry strips; gradually increasing the strip distance between adjacent mulberry strips from the lower end to the top of the purple-soil dry slope land such that the overall strip distance is dense at the upper part and is loosen at the lower part; wherein lengths of mulberry strips is the same as the width of the purple-soil dry slope land; 2), planting crops on cross slopes between every two cross slopes planted with white mulberries; and 3) dwarfing and pruning white mulberries in the step 1) regularly each year. The construction method of system for preventing and controlling water and soil loss of white mulberries in purple-soil dry slope land of the Three Gorges reservoir region has following beneficial effects: fine ecological suitability and anti adversity capability are obtained; by adopting the mode of using mulberries as fences, the white mulberry system in purple-soil dry slope land of the Three Gorges reservoir region is constructed so that good ecologic and economic benefit are obtained.

Description

technical field [0001] The invention belongs to the technical field of agricultural environmental pollution control, and specifically relates to a method for constructing a soil and water loss prevention and control system for mulberry trees in purple soil and dry slopes in the Three Gorges reservoir area. Background technique [0002] Soil erosion leads to the decline of soil fertility and water storage capacity, which is the "source" of agricultural non-point source pollution and water eutrophication. The dry slope land with purple soil in the Three Gorges Reservoir area is a high-incidence area of ​​soil erosion. The soil erosion of dry slope land is mainly affected by internal factors and external factors. , planting patterns and vegetation coverage. [0003] At present, domestic and foreign measures to prevent and control soil erosion on dry slopes are mainly divided into engineering measures and ecological measures. Engineering measures include building water-block...

Claims

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Application Information

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IPC IPC(8): A01G17/00
CPCA01G17/005
Inventor 倪九派谢德体张洋樊芳龄
Owner SOUTHWEST UNIVERSITY
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