Drip irrigation greening forestation method for saline-alkali land in coastal areas

A technology for afforestation and saline-alkali land, applied in the field of drip irrigation and afforestation in coastal saline-alkali land, can solve the problems of difficult afforestation, difficult management and maintenance in the later stage, and achieve the effects of increased survival rate, low cost, and simple management and maintenance

Active Publication Date: 2010-06-23
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS +1
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Problems solved by technology

Difficult to afforest, more diffi

Method used

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  • Drip irrigation greening forestation method for saline-alkali land in coastal areas
  • Drip irrigation greening forestation method for saline-alkali land in coastal areas

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Embodiment Construction

[0020] Using the present invention in 2008-2009, a test demonstration was carried out on the Tianjin Dagang Experimental Demonstration Base of the Institute of Geographical Science and Natural Resources Research, Chinese Academy of Sciences, which proves that the present invention has remarkable effects.

[0021] The Tianjin Dagang Experimental Demonstration Base of the Institute of Geographic Sciences and Natural Resources Research of the Chinese Academy of Sciences is located in Lianmeng Village, Gangxi Street, Dagang District, Tianjin. The saline-alkali land in this area is the same as the saline-alkali land in other coastal areas in my country. In the heavily saline-alkali land and saline soil distribution area, not only the surface layer of the soil has heavy salt accumulation, but also the inner soil has a high salt content, which is similar to the original saline silt. At the same time, because the buried depth of groundwater in this area is shallow and the shallow groun...

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Abstract

The invention provides a drip irrigation greening forestation method for saline-alkali land in a coastal area, which comprises the following steps of: A, paving a filtering layer, namely, paving the filtering layer at a position 40 to 80cm distance below the ground and filling original soil on the filtering layer; B, leveling the land and ridging when shrubs and arbors are planted; C, selecting and planting trees or grass seeds; D, arranging a drip irrigation tape, namely, arranging the single drip irrigation tape in the middle of tree planting ridge, or paving the drip irrigation tape at intervals of 30 to 100cm on a lawn; and E, irrigating, namely, irrigating for the first time once planting on the same day and then irrigating according to the actual moisture condition of the soil, wherein the irrigation quantity is more than four times the daily irrigation quantity. The invention adopts a method combining ground drip irrigation with filtering layer pavement so as to form a desalting region in a plant root region and ensure the regular growth of plants. The method solves the problem that the soil structure is damaged after the saline-alkali land with high content of sodium ions is washed, so the method can keep the good soil structure of the soil and provide a good growing environment for the plants.

Description

technical field [0001] The invention relates to a method for afforestation by drip irrigation in coastal saline-alkali land, and belongs to the technical field of saline-alkali land management and planting. Background technique [0002] The original soil of the coastal saline-alkali land is tidal flat saline silt. Not only the surface layer of the soil has a high salt content, but also the subsoil soil has a high salt content. The salt composition of the soil and groundwater is consistent with that of the sea water. The sodium chloride salt is absolutely dominant, and the soil sodium adsorption ratio is very high. , The soil texture is sticky, the structure is poor, and the air permeability is poor. Once the soil moisture is saturated, the soil will compact, the soil permeability will decrease, and the air permeability will be poor. The coastal saline-alkali soil has poor nutrient conditions and poor microbial status. As the osmotic potential of the soil decreases, it is di...

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Application Information

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IPC IPC(8): A01G23/00A01B79/02A01G25/02
CPCY02A40/22Y02P60/40
Inventor 康跃虎万书勤张超尹凤琴胡伟
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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