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Biochar-based coast saline-alkali land improvement conditioner and preparation method and application thereof

A technology of biochar and saline-alkali land, applied in the direction of soil preparation methods, application, fertilizer mixture, etc., can solve the problems of poor soil fertility, weak root system activity, poor structure, etc., achieve high survival rate, reduce malondialdehyde content, and improve physical properties Effect

Active Publication Date: 2016-03-02
INST OF SOIL SCI CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved: the present invention aims at the current practical problems such as low emergence rate of crops in saline-alkali land on coastal beaches, common phenomenon of dead seedlings, weak root activity, poor soil fertility and poor structure, and utilizes the looseness and porosity of biochar and the activation of microorganisms performance, providing a biochar-based seashore saline-alkali land improvement conditioner with both soil improvement and crop salt tolerance improvement and its preparation method and application method for different soil salinity conditions

Method used

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  • Biochar-based coast saline-alkali land improvement conditioner and preparation method and application thereof
  • Biochar-based coast saline-alkali land improvement conditioner and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0026] Cultivated land with moderate saline-alkali obstacles on coastal beaches. The soil salinity in the 0-20cm plow layer of the test plot is 2.3-4.2g / kg, the average salt content is 3.1g / kg, the pH is 9.37, the average organic matter content is 8.17g / kg, the total nitrogen is 0.33g / kg, and the alkaline nitrogen is 32.29 mg / kg, available phosphorus is 8.74mg / kg, and available potassium is 241.36mg / kg. Location: Huanghai Original Seed Farm, Dongtai City, Jiangsu Province, located in the southeast of Kaigang Town, Dongtai City, the experiment period was from June 2014 to September 2014. The test plot was reclaimed in 2003, agricultural planting began in 2008, and it has been a barley-corn rotation system since 2011. The test site is 4.6 kilometers east of the coastline.

[0027] The main implementation links are as follows:

[0028] (1) Preparation of biochar: use local corn stalks, adopt a straw carbonization machine based on pyrolysis technology, thermally crack at 400-500...

Embodiment 2

[0040] Cultivated land with severe saline-alkali obstacles on coastal beaches. The soil salinity in the 0-20cm plow layer of the test plot is 3.8-6.7g / kg, the average salt content is 4.8g / kg, the pH is 9.82, the average organic matter content is 5.95g / kg, the total nitrogen is 0.37g / kg, and the alkaline nitrogen is 35.01 mg / kg, available phosphorus is 7.74mg / kg, and available potassium is 259.58mg / kg. Location: Kengdong Reclamation District, Kenggang Town, Dongtai City, Jiangsu Province, located in the east of Kenggang Town, Dongtai City, the test period is from June 2014 to September 2014. The test plot was reclaimed in 2004, and planted in 2007. Halophytes such as Salicornia salsa and Suaeda salsa were planted in 2007-2010, and Jerusalem artichoke, a salt-tolerant economic plant, was planted in 2011-2013.

[0041] The main implementation links are as follows:

[0042] (1) Preparation of biochar: Utilize local stubble wheat straw, adopt a straw carbonization machine based o...

Embodiment 3

[0054] Cultivated land with moderate saline-alkali obstacles on coastal beaches. The soil salinity in the 0-20cm plow layer of the test plot is 2.0-4.6g / kg, the average salt content is 2.8g / kg, the pH is 9.16, the average organic matter content is 8.94g / kg, the total nitrogen is 0.36g / kg, and the alkaline nitrogen is 35.72 mg / kg, available phosphorus is 9.33mg / kg, and available potassium is 229.47mg / kg. Location: Huanghai Original Seed Farm, Dongtai City, Jiangsu Province, located in the southeast of Kaigang Town, Dongtai City, the experiment period was from October 2014 to May 2015. The test plot was reclaimed in 2003, agricultural planting began in 2008, and it has been a barley-corn rotation system since 2011. The test site is 4.6 kilometers east of the coastline.

[0055] The main implementation links are as follows:

[0056] (1) Preparation of biochar: use local barley straw from previous crops, adopt a straw carbonization machine based on pyrolysis technology, thermall...

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Abstract

A biochar-based coast saline-alkali land improvement conditioner and a preparation method and application thereof are disclosed, the biochar-based coast saline-alkali land improvement conditioner comprises, by mass, 55-60 parts of biomass charcoal, 35-40 parts of humic acid, 2-4 parts of beneficial microbial agent, 1-2 parts of urea and 3-4 parts of a binder; the biochar-based coast saline-alkali land improvement conditioner has the synergistic effect of soil improvement, activation of microorganisms, enhancement of crop saltresistance, the soil improvement helps to improve soil microflora and increase the microbial activity in the soil, microbial metabolites also enhance the crop root saltresistance, crop growth feeds back to accelerate the soil improvement, a virtuous cycle system is formed, and multiplier amplification effect can be achieved compared with a single measure.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali soil improvement conditioner, and in particular relates to a biochar-based coastal saline-alkali soil improvement conditioner suitable for coastal saline-alkali land in my country and capable of improving soil and improving crop salt resistance, as well as its preparation method and application. 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 available land area. The area of ​​saline-alkali land with potential for transformation and agricultural utilization is 100 million mu, and nearly 15 million mu is distributed in coastal areas. my country's coastal areas have a large number of saline-alkali lands (including tidal flats), and with the acceleration of reclamation in coastal provinces such as Jiangsu and Zhejiang in recent years, the area of ​​newly reclaimed tidal flat saline...

Claims

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Application Information

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IPC IPC(8): C05G3/04A01B79/02C05G3/80
CPCA01B79/02C05C9/00C05G3/80C05G5/12C05F11/02C05F11/08C05G3/00
Inventor 姚荣江杨劲松孙运朋张新余世鹏
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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