Ecological restoration method for seawater back-flowing farmland in tropical region

Patent metadata

Field	Value
Publication number	US-12312285-B2
Application number	US-202117622718-A
Country	US
Kind code	B2
Filing date	Mar 31, 2021
Priority date	Apr 30, 2020
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

An ecological restoration method for seawater back-flowing farmlands in a tropical region includes the following steps: performing soil ridging on a seawater back-flowing saline-alkalized land by using a whole-mulching double-ridge model thereof, a ridge body that has been ridged is a trapezoidal structure, and perpendicular to a direction of a coastline; planting a salt-tolerant plant on ridges, and planting Acanthus ilicifolius in furrows. Salts on the ridges are rinsed into the furrows by means of natural precipitation and irrigation; the Acanthus ilicifolius that have been planted in the furrows excretes redundant salts by using salt glands; the salt-tolerant plant and the Acanthus ilicifolius are harvested to effectively remove salts, thereby achieving an effect of reducing salts in soil by a dual-function of the ridges and the furrows.

First claim

What is claimed is:

1. An ecological restoration method for seawater back-flowing farmlands in a tropical region comprising the following steps:
performing soil ridging on a seawater back-flowing saline-alkalized land by using a whole-mulching double-ridge model thereof, wherein a ridge body that has been ridged is a trapezoidal structure, and perpendicular to a direction of a coastline; and
planting a salt-tolerant plant on ridges, and planting acanthus ilicifolius in furrows.

2. The ecological restoration method as claimed in claim 1 , wherein before planting the salt-tolerant plant and the acanthus ilicifolius, 4-6 kg/mu of fertilizer is applied on the ridges, and wherein the fertilizer is prepared by the following raw materials in parts by weight: 25-35 parts of cow dung, 30-50 parts of coconut chaff, 10-20 parts of seaweed residues, 20-30 parts of corn cob cores, 15-25 parts of banana stalk, 1-5 parts of derris roots and 2-4 parts of Bacillus subtilis powder.

3. The ecological restoration method as claimed in claim 2 , wherein the fertilizer is prepared by the following raw materials in parts by weight: 30 parts of cow dung, 38 parts of coconut chaff, 12 parts of seaweed residues, 25 parts of corn cob cores, 20 parts of banana stalk, 3 parts of derris roots and 2 parts of Bacillus subtilis powder.

4. The ecological restoration method as claimed in claim 3 , wherein a preparation method of the fertilizer comprises the following steps: crushing the banana stalk, the corn cob cores and the derris roots, placing the banana stalk, the corn cob cores and the derris roots under a condition of 2.3 MPa for performing steam explosion for 10-12 minutes, to obtain steam explosion materials, adding the cow dung, the coconut chaff and the seaweed residues into the steam explosion materials for uniformly mixing, and then adding the Bacillus subtilis powder for further stirring and mixing, spraying water to wet the materials, and fermenting for 2-4 days, to obtain the target fertilizer.

5. The ecological restoration method as claimed in claim 2 , wherein a preparation method of the fertilizer comprises the following steps: crushing the banana stalk, the corn cob cores and the derris roots, placing the banana stalk, the corn cob cores and the derris roots under a condition of 2.3 MPa for performing steam explosion for 10-12 minutes, to obtain steam explosion materials, adding the cow dung, the coconut chaff and the seaweed residues into the steam explosion materials for uniformly mixing, and then adding the Bacillus subtilis powder for further stirring and mixing, spraying water to wet the materials, and fermenting for 2-4 days, to obtain the target fertilizer.

6. The ecological restoration method as claimed in claim 1 , wherein the salt-tolerant plant comprises one or more of corn, iced vegetable, common tetragonia herb and endive.

7. The ecological restoration method as claimed in claim 6 , wherein the corn is planted on big ridges, and one or more of the iced vegetable, the common tetragonia herb and the endive are planted on small ridges.

8. The ecological restoration method as claimed in claim 1 , wherein a width of the big ridge is 65-75 cm, a height of the big ridge is 13-16 cm, a width of the small ridge is 35-45 cm, a height of the small ridge is 18-22 cm, and a bottom width of the furrow is 8-10 cm.

9. The ecological restoration method as claimed in claim 8 , wherein the width of the big ridge is 70 cm, the height of the big ridge is 15 cm, the width of the small ridge is 40 cm, the height of the small ridge is 20 cm, and the bottom width of the furrow is 10 cm.

10. The ecological restoration method as claimed in claim 1 , wherein an average salt content of the seawater back-flowing farmlands in the tropical region before performing restoration is 2 to 3 percent.

Assignees

• Univ Hainan

Inventors

• Wang Xu
• Lin Qingping
• Su Defa

Classifications

• C05F17/00

  Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation · CPC title

• A01G22/20

  Cereals · CPC title

• A01G22/15

  Leaf crops, e.g. lettuce or spinach · CPC title

• A01G22/00

  Cultivation of specific crops or plants not otherwise provided for · CPC title

• C05G3/80

  Soil conditioners · CPC title