A method of using ceramsite to improve water and fertilizer utilization efficiency of sunflower in severe saline-alkali soil

A technology of severe saline-alkali land and ceramsite, which is applied in the direction of soil preparation, fertilization, application, etc., can solve the problems of accelerated soil salt infiltration and leaching, strong secondary salt return, and low salt washing efficiency, so as to improve the physical properties of soil , Strong water and fertilizer storage capacity, high specific surface area

Active Publication Date: 2021-11-30
范峪铭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Technical problem to be solved: the present invention aims at practical problems such as low efficiency of salt washing in severe saline-alkali land, strong secondary salt return, and serious ecological degradation, and combines clay particles with water and fertilizer management to improve soil permeability through the loose porous structure of ceramsite. Accelerate the infiltration and leaching of soil salt to save water resources; use the adsorption performance of ceramsite to reduce the loss of nutrient leaching, and according to the optimization of fertilizer types, dosage and application methods, a method of using ceramsite to improve the quality of sunflower in severe saline-alkaline land is proposed. Water and Fertilizer Use Efficiency Methods

Method used

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  • A method of using ceramsite to improve water and fertilizer utilization efficiency of sunflower in severe saline-alkali soil
  • A method of using ceramsite to improve water and fertilizer utilization efficiency of sunflower in severe saline-alkali soil
  • A method of using ceramsite to improve water and fertilizer utilization efficiency of sunflower in severe saline-alkali soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Severely salinized cultivated land in Hetao irrigation area, Inner Mongolia. Collect soil samples of 0-20cm in the plow layer of the test plot, air-dry, grind, sieve (2mm), and evenly mix them to prepare soil samples for leaching tests. The soil texture is loam (2-0.02mm sand grain content 48.1%, 3 , the salt content of the soil sample is 10.83g / kg, the pH is 8.37, the average organic matter content is 15.3g / kg, the total nitrogen is 0.75g / kg, and the available phosphorus is 28.24mg / kg. Location: Toudaoqiao Town, Hangjinhou Banner, Bayannaoer, Inner Mongolia. The trial period is from April 2018 to May 2018.

[0037] The main implementation links are as follows:

[0038] (1) Preparation of leached soil column: the inner diameter of the soil column is 12cm, the height is 50cm, the material is plexiglass, and the column wall is scaled, accurate to mm.

[0039] (2) Experimental design of soil column: fill the sand and gravel filter layer at the bottom of the soil column a...

Embodiment 2

[0053] Severely salinized cultivated land in Hetao irrigation area, Inner Mongolia. Collect soil samples of 0-20cm in the plow layer of the test plot, air-dry, grind, sieve (2mm), and evenly mix them to prepare soil samples for leaching tests. The soil texture is loamy clay (2-0.02mm sand grain content 33.7 %, 3 , the salt content of the soil sample is 8.71g / kg, the pH is 8.54, the average organic matter content is 17.1g / kg, the total nitrogen is 0.84g / kg, and the available phosphorus is 33.17mg / kg. Location: Sandaoqiao Town, Hangjinhou Banner, Bayannur, Inner Mongolia. The trial period is from June 2018 to August 2018.

[0054] The main implementation links are as follows:

[0055] (1) Preparation of leached soil column: the inner diameter of the soil column is 12cm, the height is 50cm, the material is plexiglass, and the column wall is scaled, accurate to mm.

[0056] (2) Experimental design of soil column: fill the sand and gravel filter layer at the bottom of the soil co...

Embodiment 3

[0069] Severely saline-alkali cultivated land in Hetao Plain, Inner Mongolia. The surface soil texture is silt loam with a bulk density of 1.41g / cm 3 , the average soil salt content is 5.69g / kg, the pH is 8.42, the average organic matter content is 15.3g / kg, the total nitrogen is 0.69g / kg, the available phosphorus is 26.72mg / kg, and the planting crop is sunflower (variety TP0409). Location: Chengni Village, Toudaoqiao Town, Hangjinhou Banner, Bayannaoer, Inner Mongolia, the experimental method of the plot, the area of ​​the plot is 120m 2 , the test period is from May 2019 to October 2019.

[0070] The main implementation links are as follows:

[0071] (1) Mixing and weighing of ceramsite: the amount of ceramsite is 1500kg / mu, the mass ratio of ceramsite with three particle sizes >10mm, 5-10mm and <5mm is 25-50-25, and the ceramsite with different particle sizes in the community is converted according to the area of ​​the community Measure, weigh and mix.

[0072] (2) Manu...

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Abstract

A method of using ceramsite to improve the water and fertilizer utilization efficiency of sunflower in severe saline-alkali land. According to the soil texture, ceramsite with different particle sizes is mixed according to the optimal mass ratio, and the mixed ceramsite and humic acid organic fertilizer are applied in severe saline-alkali land. Plow or powder ridge to mix it evenly with the topsoil layer, apply basal fertilizer and mulch, irrigate and press salt, and sow at the right time. During the growth period of sunflower, optimize the type, amount and application method of nitrogen fertilizer to reduce nutrient leaching loss. The invention combines the optimized application of ceramsite with the efficient operation of water and fertilizer, improves the leaching efficiency of soil salt, promotes the reduction and storage of nutrients and the absorption of crops, and realizes the utilization of waste resources in severe saline-alkali land and the synergy of water and fertilizer for sunflower.

Description

technical field [0001] The invention belongs to the technical method field of saline-alkali land improvement, in particular to a severe saline-alkali land suitable for arid saline-alkali areas or secondary salinized irrigation areas in my country, using ceramsite to accelerate soil salt leaching, promote crop growth, and improve water and fertilizer utilization efficiency. Saline-alkali land treatment and utilization methods. Background technique [0002] The total area of ​​saline-alkali land resources in my country is more than 500 million mu, accounting for nearly 5% of the country's usable land area. The Hetao Irrigation Area in Inner Mongolia is located in the arid inland area of ​​Northwest my country. It is one of the three super-large irrigation areas in my country. It is also an important commodity grain, oil, and sugar production base in the country and the autonomous region. The annual evaporation is 11 to 18 times that of the rainfall. The salinized cultivated lan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00A01B79/00A01B79/02C04B33/132C04B33/135C04B38/00
CPCA01B79/00A01B79/02A01C21/00A01C21/005C04B33/132C04B33/1321C04B33/1352C04B38/009C04B38/0074C04B38/0067Y02P40/60Y02A40/10
Inventor 范峪铭刘伟李强
Owner 范峪铭
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