Method for directly planting macrophanerophyte in natural soil of coast silt severe saline-alkali soil

A technology for silty, saline-alkali land, applied in the fields of land preparation, forestry, agricultural machinery and implements, etc., to achieve the effects of increasing biodiversity, reducing groundwater level, and low cost

Inactive Publication Date: 2013-11-20
河北省农林科学院滨海农业研究所
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Problems solved by technology

[0003] The present invention aims to solve the above-mentioned problems existing in the existing silty heavy saline-alkali land arbor planting, an

Method used

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the examples, and the purpose is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0032] The soil profile of the implementation area involved in this embodiment is: silty coastal heavy saline-alkali soil, the average total salt content of 1m soil is 2.22%, the pH value is 8.6, and the underground water depth is 1-1.5m. Carry out the original soil direct planting arbor according to the following steps:

[0033] 1. Mechanically level the land.

[0034] According to the topography and terrain of the implementation area, use mechanical equipment such as bulldozers, excavators, and earth-moving vehicles to level the land in the implementation area, and the ground height difference is less than 20cm.

[0035] 2. Build embankment-style terraces.

[0036] Combined with digging drainage ditches t...

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Abstract

The invention relates to the technical field of severe saline-alkali soil greening, in particular to a method suitable for directly planting macrophanerophyte in natural soil of coast silt severe saline-alkali soil of which 1 m soil body contains more than 2.0 percent of total salt. The method comprises the following steps: building a burrock-type platform field through drainage trenching; paving a water supplying pipeline; broadcasting phosphogypsum and humic acid; then broadcasting semi-decomposed maize straw manure for soil amelioration; conducting mechanical deep tillage and land leveling; paving water seepage pipes; leaching salt through fresh water; electing a macrophanerophyte type; planting. According to the invention, the physical chemical property of the soil is improved through 'soil amelioration, fertilization and deep tillage', so that soil leaching is accelerated while the soil is fertilized. Therefore, a soil ecological environment suitable for tree growth is formed gradually, and lasting greening is further realized. Compared with the greening method in which the ground is elevated through soil dressing, the method has the advantages that cost is reduced; the macrophanerophyte survival rate is higher than 95 percent; low-cost lasting greening of severe saline-alkali soil is realized in very deed; the economic benefit and ecologic landscape of severe saline-alkali soil greening are improved remarkably.

Description

technical field [0001] The invention relates to the technical field of heavy saline-alkali landscaping, in particular to a method suitable for directly planting trees in raw soil of seaside muddy heavy saline-alkali land with a total salt content of more than 2.0% in 1 m of soil. Background technique [0002] Coastal muddy heavy saline land is generally close to the sea, with high groundwater table, high groundwater salinity, high soil saline-alkali content (generally above 1.0%), heavy soil quality, poor permeability, soil salinity control and construction It is extremely difficult to grow suitable vegetation, especially in heavy saline-alkali land with a total soil salt content of more than 2.0% (vegetation is sparse, called bare land), and it is more difficult to plant arbor species with large root systems. The greening of saline-alkali land is a worldwide problem. At present, the engineering measures of "engineering salt avoidance + foreign soil replacement" are generall...

Claims

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Application Information

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IPC IPC(8): A01B79/02A01G23/00
Inventor 李可晔王文成王秀萍薛志忠杨雅华郭艳超孙宇张国新鲁雪林刘雅辉
Owner 河北省农林科学院滨海农业研究所
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