Brackish water and fresh water mixed irrigation method for saline-alkali soil and application of irrigation method in planting of amaranthus hypochondriacus

A technology of brackish water and saline-alkali land, applied in the agricultural field, can solve the problems of low annual yield of fresh grass and low nutrient content of grain amaranth, and achieve the effects of high extract content, increasing annual output, and increasing nutrient content

Inactive Publication Date: 2015-11-11
WEIFANG YOURONG IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But the brackish water irrigation technique of prior art has following defect: adopt the irrigation method of prior art, the fresh grass annual yield of planting grain amaranth in saline-alkali land is low; The nutrient content of the grain amaranth planted is not high

Method used

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  • Brackish water and fresh water mixed irrigation method for saline-alkali soil and application of irrigation method in planting of amaranthus hypochondriacus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 Application of a method of mixed irrigation with brackish water and fresh water in saline-alkali land in grain amaranth planting

[0027] Step 1, nursery

[0028] In early May, nursery seedlings are carried out. Generally 15-20 days in advance, nursery seedlings are carried out in a hotbed. The seedbed is 40 cm deep and filled with 20 cm thick fertile soil. First fill with enough water. After the water seeps, spread the seeds evenly on it, and then cover with a layer of 1.5-2 cm Cover the thick fine soil with a film.

[0029] After sowing, when the height of the seedlings is 2 cm, the film can be properly removed and let out. Note that the seedbed temperature should not be higher than 35°C to avoid burning the seedlings.

[0030] When the seedlings are 15 cm high, they are ready to be transplanted.

[0031] Step 2: Soil improvement in the planting area

[0032] Soil in planting area: pH is 8.5-8.8, salt content is 0-30cm, soil layer salt content is 5.6-5.8%, total nit...

Embodiment 2

[0063] Example 2 Application of a mixed irrigation method of brackish water and fresh water in saline-alkali land in the planting of grain amaranth

[0064] Using the planting method of Example 1, only the step 4 irrigation was changed, and the seed amaranth planting of Example 2 was performed.

[0065] The irrigation steps of Example 2 are as follows:

[0066] (1) Seedling irrigation:

[0067] Irrigation with brackish water and fresh water rotation, the ratio of brackish water and fresh water rotation irrigation is 1:4, irrigate once every 7-10 days, and the irrigation amount is 350m3 / ha each time;

[0068] The salinity of the fresh water is less than 1 g / L, the salinity of the brackish water is 2.8 g / L, the pH is 7.9, the salt content is 0.1%, and the sodium salt content accounts for 74% of the total salt content.

[0069] (2) Mid-term irrigation:

[0070] Adopt the method of rotation irrigation with amino acid-rich salt water and fresh water. The ratio of amino acid-rich salt water and...

Embodiment 3

[0079] Example 3 Application of a mixed irrigation method of brackish water and fresh water in saline-alkali land in the planting of grain amaranth

[0080] Using the planting method of Example 1, only the irrigation in step 4 was changed, and the seed amaranth planting in Example 3 was performed.

[0081] The irrigation steps of Example 3 are as follows:

[0082] (1) Seedling irrigation:

[0083] Use brackish water and fresh water rotation irrigation, the ratio of brackish water and fresh water rotation irrigation is 1:4, irrigation is once every 7-10 days, and the irrigation amount is 400m3 / ha each time;

[0084] The salinity of the fresh water is less than 1 g / L, the salinity of the brackish water is 3.4 g / L, the pH is 8.2, the salt content is 0.11%, and the sodium salt content accounts for 76% of the total salt content.

[0085] (2) Mid-term irrigation:

[0086] Adopt the method of rotation irrigation with amino acid-rich salt water and fresh water. The ratio of amino acid-rich salt ...

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Abstract

The invention provides a brackish water and fresh water mixed irrigation method for saline-alkali soil. The irrigation method is characterized by comprising seedling-stage irrigation, intermediate-stage irrigation and cutting-stage irrigation. According to the seedling-stage irrigation, the ratio of times of rotation irrigation of brackish water to fresh water is 1:4, and the amount of irrigation at each time is 300 to 400m<3>/hectare. According to the intermediate-stage irrigation, the ratio of times of rotation irrigation of amino acid-enriched saline water to the fresh water is 1:3, irrigation is carried out for one time every five to seven days, and the amount of irrigation at each time is 400 to 500m<3>/hectare. The amino acid-enriched saline water is formed by dissolving an amino acid fertilizer into the brackish water, and components of the amino acid fertilizer comprise 5 to 6 percent of valine, 7 to 9 percent of cystine, 3 to 4 percent of aspartic acid, 2 to 3 percent of hydroxyproline, 3 to 5 percent of tryptophan, 3 to 6 percent of serine, 7 to 8 percent of threonine and 10 to 16 percent of microelement. Amaranthus hypochondriacus is planted by using the irrigation method, the annual output of fresh grass is 20,000 to 22,000kg/acre, and the protein content of the fresh grass is 25.2 to 28.8 percent.

Description

technical field [0001] The invention belongs to the field of agriculture, and relates to a brackish water and fresh water mixed irrigation method, in particular to a saline-alkali land brackish water and fresh water mixed irrigation method and its application in planting grain amaranth. Background technique [0002] The effects of soil moisture and salinity must be considered simultaneously when irrigating crops in saline-alkali land. When irrigation is insufficient, crops may slow down their growth rate or even reduce their yield due to low soil moisture content in the root zone or high salt concentration in the soil solution. However, excessive irrigation may also affect the normal growth of crops and lead to secondary salinization of soil by raising the groundwater table. [0003] At present, salt water irrigation technology mainly includes individual irrigation and mixed irrigation. The key technology of mixed irrigation lies in the proportion of mixed irrigation and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G25/00A01G1/00
CPCA01G25/00A01G22/00
Inventor 王胜
Owner WEIFANG YOURONG IND
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