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Method for improving salt and alkali soil through halophyte

A technology of saline-alkali land and halophytes, which is applied in the fields of soil preparation, agriculture, application, etc., can solve the problems of water resources and chemical measures affecting crops, etc., and achieve the effect of good governance effect, simple operation and low cost

Active Publication Date: 2015-11-18
NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: Aiming at the need to use a large amount of water resources and chemical measures to affect the growth of crops in the current physical improvement method, a method for ecological improvement of saline-alkali land by halophytes is proposed. The method adopts mixed cultivation to absorb salt, Alkali-absorbing plants to control saline-alkali soil, this method can thoroughly improve saline-alkali soil without consuming a lot of water resources, and will not affect the growth of subsequent crops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] Firstly, in the first ten days of October, select the thriving bushes of Atriminus, Salicornia, and Suaeda salsa, collect seeds with better maturity, and store them in cold storage at 5°C for later use; then use plugs for seedling cultivation, and put Seeds of cattail, salicornia, and Suaeda salsa were sown on-demand in the non-polluted plug soil, and the surface of the plug was covered with 2mm of fine sand, and the aqueous solution was sprayed regularly every 10 hours to keep the soil surface moist. The sprayed aqueous solution had a mass concentration of 5% mixed solution of sodium chloride and sodium carbonate, and increase the concentration of the aqueous solution by 3% after each spraying. After 20 days of planting, when the plant height is 10cm, transplant the seedlings of Amarina, Salicornia and Suaeda salsa to the required treatment. In the pot of saline-alkali soil, the height of the culture soil is 18cm, and 3 seedlings are planted in each pot of the test, and...

example 2

[0018] First, at the end of September, select the vigorously growing clusters of Atriminus, Salicornia, and Suaeda salsa, collect seeds with better maturity, and store them in cold storage at 3°C ​​for future use; , Salicornia and Suaeda salsa seeds are sown on-demand in the non-polluted plug soil, and the surface of the plug is covered with 1mm of fine sand, and the aqueous solution is sprayed regularly every 8 hours to keep the soil surface moist. The sprayed aqueous solution has a mass concentration of 3%. A mixed solution of sodium chloride and sodium carbonate, and increase the concentration of the aqueous solution by 1% after each spraying. After 15 days of planting, when the plant height is 7cm, transplant the seedlings of Amarina, Salicornia and Suaeda salsa to the salt water that needs to be treated. In the pot of alkaline soil, the height of the culture soil is 16cm. In the test, 3 seedlings are planted in each pot, and the seedlings are 1 strain / pot after the seedlin...

example 3

[0020] First, in the first ten days of October, select the thriving bushes of Atriminus, Salicornia, and Suaeda salsa, collect seeds with better maturity, and store them in cold storage at 4°C for later use; then use plugs to raise seedlings, and Seeds of cattail, salicornia, and Suaeda salsa were sown on-demand in the non-polluted plug soil, and the surface of the plug was covered with 1mm of fine sand, and the aqueous solution was sprayed regularly every 9 hours to keep the soil surface moist. The sprayed aqueous solution had a mass concentration of 4% sodium chloride and sodium carbonate mixed solution, and increase the concentration of the aqueous solution by 2% after each spraying, and after 17 days of planting, when the plant height is 8cm, transplant the seedlings of Amarina, Salicornia and Suaeda salsa to the required treatment In the pot of saline-alkali soil, the height of the culture soil is 17cm, and 3 seedlings are planted in each pot of the test, and the seedlings...

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Abstract

The invention relates to treatment of salt and alkali soil, in particular to a method for improving salt and alkali soil through halophyte. The method includes the steps that firstly, after seeds with the good maturity such as atriplex halimus are refrigerated and stored, the seeds are sowed in potted soil in a hill-seedling mode, the potted surfaces are covered with fine sand and sprayed with a water solution in a timing mode, the surface of the soil is kept wet, the seedlings with the height ranging from 7 cm to 10 cm are transplanted into pots with the salt and alkali soil to be treated, and pot culturing is conducted; secondly, the pots are transferred outdoors, planting is conducted on the salt and alkali soil required to be treated according to the border of 1 m multiplying by 1 m till the whole region is covered; thirdly, after the transplanted plants grow for 120 days and are mature, and the seeds are shed, the portions, above the roots, of the plants are collected to be aired so as to be made into forage feed, and the salt and alkali soil can be improved after being governed through the method for 2 to 3 years. The method has the advantages that the salt and alkali soil can be improved effectively, and the treatment effect is good; consumption of a great number of water resources is not needed, growth of crops in the follow-up process is not affected; and the method is easy to implement and low in required cost.

Description

technical field [0001] The invention relates to the treatment of saline-alkali soil, in particular to a method for ecologically improving saline-alkali soil with halophytes. Background technique [0002] The threat of soil salinization to agriculture is a global problem. There are about 1 billion hm2 of saline-alkali land in the world. It occupies nearly 25% of the land area. 20% of the world's arable land and nearly half of the irrigated land are threatened by varying degrees of salt damage. my country has only 100 million hm2 of arable land, of which more than 20 million hm2 is saline barren land and 06.7 million hm2 is saline soil. It is one of the world's largest saline land countries. my country is a large agricultural country, and agricultural development is one of the important components of national economic development. Studying effective measures to control saline-alkali land, transforming saline-alkali land, and controlling the further improvement of its ecosys...

Claims

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Application Information

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IPC IPC(8): A01B79/02
Inventor 雷春生薛红娟高力群
Owner NORTHWEST INST OF ECO-ENVIRONMENT & RESOURCES CAS
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