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Method for conducting afforestation on saline-alkali soil

A technology for saline-alkali land, agricultural and forestry waste, applied in afforestation, botanical equipment and methods, forestry, etc., can solve the problems of difficult saline-alkali land treatment, fragile ecosystem, poor resistance to diseases and insect pests, and natural disasters, and achieve the effect of absorbing water and salt Good effect, promoting root development and reducing improvement cost

Active Publication Date: 2013-11-20
BEIJING QIANJING LANDSCAPE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 1. It is very difficult to control saline-alkali land, lacking the integration and cooperation of engineering measures and biological measures, domestic and foreign saline-alkali land treatment has not achieved great results, and it is difficult to form a scale effect
[0011] 2. The investment cost of saline-alkali land treatment is relatively high, and the consumption of fresh water resources is large
[0012] 3. The tree species in the treated saline-alkali land have monotonous landscape, lack of biodiversity, fragile ecosystem, poor resistance to diseases, insect pests and natural disasters

Method used

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  • Method for conducting afforestation on saline-alkali soil
  • Method for conducting afforestation on saline-alkali soil
  • Method for conducting afforestation on saline-alkali soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] 1. Preparation of organic compost materials

[0072] Ferment and compost one or more of the landscaping waste (including dead branches, fallen leaves, grass clippings, flower rot, greening prunings and other organic substances in urban greening) to obtain organic compost materials for future use.

[0073] During the composting and fermentation process of organic waste such as landscaping waste, some of the substances that are easily decomposed by microorganisms are converted into stable humus substances, and the remaining lignocellulosic substances that are not easily decomposed can improve the permeability of the soil. The organic compost material prepared by composting fermentation can reduce the pH of alkalized soil, increase the content of soil organic matter, available phosphorus and available potassium, and increase the activity of soil microorganisms.

[0074] Described organic compost material is prepared according to the following steps:

[0075] A) Collect la...

Embodiment 2

[0101] Be 1.5cm except that the thickness of reed screen, width is 100cm; The diameter of the bottom surface 2 of planting pit is 120cm, and the depth of planting pit is 100cm; The thickness H of the bottom filter layer 10 that is set is 30cm; Reed screen is cut into width is The 70cm reed curtain block is rolled into a cylindrical reed curtain tube with a diameter of 100cm, placed in the middle of the planting pit to form the second inner wall isolation layer 6, and the distance between the second inner wall isolation layer 6 and the planting pit inner wall 3 is 10cm; The thickness h of the inner wall filter layer 9 is 10cm; the diameter of the matrix filling layer 11 is 100cm; the diameter of the second bottom isolation layer 8 is 100cm, and the thickness is 1.5cm; the volume ratio of organic compost material and saline-alkali soil is 1:7 Except, the others are the same as in Example 1.

[0102] In this embodiment, the survival rate of pagoda japonica (arbor) planted is 96%,...

Embodiment 3

[0105] Except that the width of the reed curtain is 110cm; the thickness H of the bottom filter layer 10 is 30cm; the reed curtain is cut into a length of 190-195cm and a width of 80cm after the reed curtain block is rolled into a cylindrical reed curtain tube with a diameter of 60cm. Place in the middle part of the planting pit to form the second inner wall isolation layer 6; the distance between the second inner wall isolation layer 6 and the planting pit inner wall 3 is 20cm; the diameter of the second inner wall isolation layer 6 is 60cm, and the width is 80cm; the depth of the plantation pit is 110cm, the thickness h of the filter layer 9 of the inner wall is 20cm; the volume ratio of the organic compost material and the original soil of the saline-alkali land is 1:3, and the rest are the same as in Example 1.

[0106] In this embodiment, the survival rate of pagoda japonica (arbor) planted is 94%, the preservation rate reaches 91%, and the growth rate of seedlings is fast...

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Abstract

The invention discloses a method for conducting afforestation on saline-alkali soil. The method includes the steps of firstly, digging deep planting pits in the saline-alkali soil; secondly, paving two layers of isolating curtains at the bottom of each planting pit and the inner wall of each planting pit respectively; thirdly, arranging filtering layers between each isolation layer and the bottom of each planting pit and between each isolating layer and the inner wall of each planting pit; fourthly, preparing mixed matrix, filling the matrix into the pits and tamping down the matrix; fifthly, planting seedlings; sixthly, conducting maintenance management. According to the method for conducting afforestation on the saline-alkali soil, the difficult problems of lowering the salt content, improving the soil and conducting afforestation on the saline-alkali soil are solved. Through the measures of discharging salt and blocking salt, the salt content in the distribution range of the plant root systems is lowered, the plant root systems are promoted to absorb nutrient and water and discharge salt in a unidirectional mode, and a soil environment which is beneficial to plant growth is created. According to the method for conducting afforestation on the saline-alkali soil, the survival rate and the preserving rate of the seedlings are improved, and the method is low in cost compared with a traditional method for improving the saline-alkali soil by merely paving the salt isolating layers, replacing soil and conducting afforestation, is suitable for the saline-alkali soil afforestation and the plant cover recovery project, and can also be used in the manual construction and the machine and human coordinated construction.

Description

technical field [0001] The invention relates to a comprehensive supporting technology for reducing salt and improving soil in saline-alkali land, in particular to a comprehensive supporting technology for reducing salt and improving soil in coastal saline-alkali land. Background technique [0002] Salinity is the second largest abiotic stress to plants after drought. According to the statistical results of the United Nations Educational, Scientific and Cultural Organization (UNESCO) and the Food and Agriculture Organization (FAO), there are about 955 million hm 2 saline-alkali land. The total area of ​​saline-alkali soil in my country is about 99 million hm 2 , is widely distributed. The coastal area is the transitional zone between the continent and the ocean, vulnerable to storm surges, salt dust, and salt spray, and generally has a low terrain, high soil salinity and groundwater level, heavy soil texture, low natural desalination rate, and easy growth become saline-al...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G23/00
CPCY02A40/22Y02P60/40
Inventor 李素艳孙向阳张涛王琳琳翟鹏辉张薇
Owner BEIJING QIANJING LANDSCAPE CO LTD
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