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Method for improving soil by using straw organic fertilizer

A straw organic fertilizer and soil improvement technology, which is applied to organic fertilizers, soil preparation methods, soil conditioning materials, etc., can solve problems affecting crop yield and the effect of returning to the field, so as to improve the stability of soil structure, improve soil physical and chemical properties, The effect of improving ventilation

Active Publication Date: 2021-10-22
NANCHONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the traditional way of returning to the field, it will not only affect the effect of returning to the field, the utilization rate of fertilizer, but also affect the yield of crops

Method used

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  • Method for improving soil by using straw organic fertilizer

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Effect test

Embodiment 1

[0037] A method for improving soil by utilizing straw organic fertilizer, comprising the following steps:

[0038] S1, prepare soil improvement fertilizer

[0039] S1.1. Mix the crushed straw I with farmyard manure and fermenting agent at a mass ratio of 25:10:0.3 and then carry out composting fermentation. After the fermentation is completed, dry and pulverize to obtain straw organic fertilizer; wherein, the fermenting agent is commercially available EM bacteria agent, the number of effective viable bacteria ≥ 1 billion / g.

[0040] S1.2. Carry out carbonization treatment on crushed straw II to form straw granular carbon; wherein the carbonization treatment is oxygen-limited pyrolysis at 300° C. for 1 hour.

[0041] S1.3. Put 20g of attapulgite at 300-400°C for 1 hour and then soak it in 100mL of hydrochloric acid solution with a volume concentration of 3%. After the acid activation, wash with water until neutral and dry to obtain acid-activated attapulgite. stick clay;

...

Embodiment 2

[0048] A method for improving soil by utilizing straw organic fertilizer, comprising the following steps:

[0049] S1, prepare soil improvement fertilizer

[0050] S1.1. Mix the crushed straw I with farmyard manure and fermenting agent at a mass ratio of 10:15:0.1 and then carry out composting fermentation. After the fermentation is completed, dry and pulverize to obtain straw organic fertilizer;

[0051] S1.2. Carry out carbonization treatment on crushed straw II to form straw granular carbon; wherein the carbonization treatment is oxygen-limited pyrolysis at 300° C. for 1 hour.

[0052] S1.3. Put 20g of attapulgite at 300-400°C for 1 hour, then soak it in 100mL of hydrochloric acid solution with a volume concentration of 5%. After the acid activation, wash with water until neutral, and dry to obtain acid-activated attapulgite. stick clay;

[0053] Disperse 5 g of acid-activated attapulgite into 50 mL of water, then add chitosan hydrochloric acid solution, wherein the volum...

Embodiment 3

[0059] A method for improving soil by utilizing straw organic fertilizer, comprising the following steps:

[0060] S1, prepare soil improvement fertilizer

[0061] S1.1. Mix the crushed straw I with farmyard manure and fermenting agent at a mass ratio of 35:15:0.5 and then carry out composting fermentation. After the fermentation is completed, dry and pulverize to obtain straw organic fertilizer;

[0062] S1.2. Carry out carbonization treatment on crushed straw II to form straw granular carbon; wherein the carbonization treatment is oxygen-limited pyrolysis at 300° C. for 1 hour.

[0063] S1.3. Put 20g of attapulgite at 300-400°C for 1 hour and then soak it in 100mL of hydrochloric acid solution with a volume concentration of 3%. After the acid activation, wash with water until neutral and dry to obtain acid-activated attapulgite. stick clay;

[0064] Disperse 5 g of acid-activated attapulgite into 50 mL of water, then add chitosan hydrochloric acid solution, wherein the vol...

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Abstract

The invention provides a method for improving soil by using a straw organic fertilizer. The method comprises the following steps: S1, preparing a soil improvement fertilizer: S1.1, mixing crushed straw I with farmyard manure and a fermentation inoculant, and performing composting fermentation to obtain the straw organic fertilizer; S1.2, carrying out carbonization treatment on crushed straw II to form straw granular carbon; S1.3, mixing a water-retaining agent, a surfactant and water, then adding the straw granular carbon and the chitosan modified attapulgite, and performing high-speed mixing to form a coating material; and S1.4, mixing the straw organic fertilizer with the coating material, and carrying out granulating to obtain the soil improvement fertilizer; S2, constructing an isolation impermeable layer on the ground surface; mixing the soil improvement fertilizer and plough layer soil, and flatly laying the mixture on the isolation impermeable layer to form a fertile soil layer; flatly laying the plough layer soil on the surface of the fertile soil layer to form a planting layer; and S3, intercropping and planting green manure crops on the planting layer, crushing the green manure crops, and deeply burying the crushed green manure crops in the fertile soil layer. According to the method, the saline-alkali soil structure is improved in an effective straw returning mode, and the soil fertility is enhanced.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a soil improvement method using straw organic fertilizer. Background technique [0002] Saline-alkali soil, also known as saline soil, contains excess soluble salts, such as sulfate ions, chloride ions, nitrate ions, etc. Due to the existence of excessive soluble salts, the pH of the soil is alkaline, and the pH of some land reaches 8.5 or even higher, which causes the leaching of soil nutrients and damages the soil structure, which is not conducive to the growth of crops. Therefore, it is necessary to improve saline soil. [0003] At present, my country is rich in crop straw resources, which contain rich organic and inorganic nutrients. Returning straw to the field can achieve the purpose of effective resource utilization and avoid environmental pollution caused by incineration. But how to effectively return to the field is the key to solving the utilization of straw ...

Claims

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Application Information

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IPC IPC(8): A01B79/02C09K17/40C05G3/00C05G3/40C05G3/50C05G3/80C05G5/12C05G5/30C05F17/20
CPCA01B79/02C09K17/40C05D9/00C05F17/20C05G3/00C05G3/40C05G3/50C05G3/80C05G5/12C05G5/37C05F11/00C05F11/08Y02W30/40
Inventor 何川王鹏唐明双浦全波王颖辛开斌程明明
Owner NANCHONG ACAD OF AGRI SCI