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Preparation method and application of a kind of total nutrient degradable straw seedling raising matrix block

A technology of raising seedling substrate and full nutrition, which is applied in the field of seedling raising substrate and rice seedling raising, which can solve problems such as unstable raw materials, sticking of substrate blocks, and unbalanced nutrients, so as to improve the quality of seedlings, increase the temperature of biological fermentation, and reduce the cost of seedling raising Effect

Active Publication Date: 2021-05-28
JIANGSU ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above problems, the present invention provides a preparation method and application of a fully nutrient-degradable straw seedling-raising matrix block, which solves the technical problem of overcoming the high density, unstable raw materials, unbalanced nutrients, and general Poor permeability, sticking of matrix blocks in the seedling raising stage, missing seedlings and other defects, so as to provide a plastic-free seedling tray that does not need to be topdressed at the seedling stage, and nutrients can be released slowly and controlled, water retention, fertilizer retention, heat preservation and ventilation, and is suitable for existing rice transplanters. Preparation method and application of total nutrition degradable straw seedling raising matrix block

Method used

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  • Preparation method and application of a kind of total nutrient degradable straw seedling raising matrix block
  • Preparation method and application of a kind of total nutrient degradable straw seedling raising matrix block
  • Preparation method and application of a kind of total nutrient degradable straw seedling raising matrix block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1 Biorefining plastic silky straw fiber

[0053] 120kg urea is dissolved in 6 tons of water, is sprayed to contain 25kg active microbial bacterial agent (in the present embodiment Streptomyces Louchei, Bacillus licheniformis, Bacillus subtilis, Aspergillus oryzae quality are respectively: 10kg, 6.25kg, 6.25kg and 2kg) on ​​the straw fiber segment with a mass of 2.5 tons, throw it to the mixed straw material with a moisture content of 60±5%, adjust the carbon-nitrogen ratio to 25, and then stack it in a box-type fermenter for biological pretreatment 12 Days later, the first static aerobic fermentation was carried out for 4 days, and the continuous ventilation was 0.42m 3 / min, the material is turned and thrown; the second static anaerobic fermentation is carried out for 4 days, after being evenly turned and thrown; the third static aerobic fermentation is carried out for 4 days, the fermentation temperature is 69 ° C ± 2 ° C, the material is discharged, and air-d...

Embodiment 2

[0055] Embodiment 2 Nutrient-controllable slow-release conditioner carrier

[0056] 1. Roast the rice husk in a tube furnace at 120°C for 60 minutes, and cool naturally to room temperature to obtain carbonized rice husk.

[0057] 2. Mix 10 parts of compound fertilizer and 3 parts of urea-formaldehyde slow-release fertilizer (conventional slow-release fertilizer, refer to literature for preparation method: Qu Ping, Chang Zhizhou, Zhao Yongfu, Huang Hongying. Structure of protein hydrolyzate modified urea-formaldehyde slow-release fertilizer and nitrogen release characteristics [J], Journal of Agricultural Engineering, 2016 (21): 240-245.), 1.5 parts of potassium fulvic acid, 3 parts of polyglutamic acid and 1.5 parts of diammonium phosphate are mixed evenly, and the concentration is 5 % of slow-release nutritional conditioners.

[0058] The "urea-formaldehyde slow-release fertilizer" can use conventional slow-release fertilizers in the field. The preparation method of the slow...

Embodiment 3

[0061] Synthesis of Example 3 Functional Polymer Degradable Polymer

[0062] Put hydrolyzed protein with a concentration of 25%, water and paraformaldehyde in the reaction kettle according to the volume ratio of 1:1:2, stir evenly, heat up to 45°C, add urea (the molar ratio of urea to paraformaldehyde is 1.4: 1), adjust the pH to 8.5 with potassium hydroxide, raise the temperature to 90°C and keep it for 60-90min, add polyvinyl alcohol with 5% of the total amount of urea, react for 30min, adjust the pH to 5.5 with 85% phosphoric acid, and react at 85°C After 45-70 minutes, add diatomaceous earth, a nano-scale functional material with 2% of the total amount of urea, adjust the pH to 6.5, continue stirring for 15 minutes, cool down to 40°C, and discharge to obtain a functional polymer degradable polymer.

[0063] One or more of nanoscale diatomite, attapulgite or tourmaline can be selected as the nanoscale functional material during implementation.

[0064] The above-mentioned ...

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Abstract

The invention provides a preparation method and application of a full-nutrition degradable straw seedling raising matrix block. The preparation steps of the matrix block are as follows: 1) the straw is compounded with an active microbial agent and then fermented to obtain plastic silky straw fibers; The nutrient-releasing conditioner is loaded on the carbonized rice husk, air-dried and pulverized to obtain a nutrient-controllable slow-release conditioner carrier; 3) Mix hydrolyzed protein, water, paraformaldehyde, urea, polyvinyl alcohol, and nano-scale functional materials to prepare functional High molecular degradable polymer; 4) Mix plastic silky straw fiber, nutrient-controllable slow-release conditioner carrier, vermiculite, and water, then pulverize, homogenize, and absorb under negative pressure to obtain a straw seedling-raising matrix block, and spray it around The degradable functional macromolecule polymer obtains the matrix block of total nutrition and degradable straw seedling raising; the matrix block can be applied to the dry seedling raising of rice, as well as the seedling raising of landscape grass seeds, cotton, melons and fruits, vegetables, and rapeseed.

Description

technical field [0001] The invention relates to rice seedling raising and seedling raising matrix in the agricultural field, a novel straw seedling raising matrix block suitable for machine transplanting, in particular to a preparation method and application of a full-nutrient degradable straw seedling raising matrix block. Background technique [0002] Rice is the largest food crop in my country. Rice production not only shoulders the important task of ensuring national food security, but also shoulders the important mission of increasing the income of rice farmers and comprehensively promoting the construction of new countryside. my country's rice planting area is about 450 million mu, and the total output is as high as 201 million tons. The planting area and total output account for 27% and 36% of the grain respectively. Advanced rice planting models and technologies are of great significance to ensuring national food security. With the advancement of science and technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G24/22A01G24/20A01G24/30C05G5/30C05G3/40
CPCA01G24/20A01G24/22A01G24/30C05B7/00C05C9/00C05G3/00C05C9/02C05C11/00C05D9/00C05F9/04C05F11/02C05F11/08C05G1/00
Inventor 孙恩惠黄红英雍宬曲萍徐跃定张晶
Owner JIANGSU ACAD OF AGRI SCI
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