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Carbon-based rice seedling raising substrate for rice and preparation method thereof

A seedling-raising substrate and carbon-based technology, which is applied in planting substrates, botany equipment and methods, and the preparation of organic fertilizers, can solve problems such as environmental pollution and waste of resources, achieve large specific surface area, reduce leaching, and have a wide range of sources Effect

Inactive Publication Date: 2016-09-07
CHINA NAT RICE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of production, a large amount of rice straw is produced every year, some of which are returned to the field, and most of them are burned, which seriously pollutes the environment and causes waste of resources
At present, there are still many problems in the direct use of rice straw to make seedling raising substrates

Method used

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  • Carbon-based rice seedling raising substrate for rice and preparation method thereof

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preparation example Construction

[0027] The invention also provides a preparation method of a rice charcoal-based seedling raising substrate, which comprises the following steps:

[0028] 1) Preparation of biochar: After the straw is crushed, it is dried in an oven and heated for 2-3 hours in a carbonization furnace at a temperature of 450-550°C and isolated from the air to obtain biochar particles, which is called biochar;

[0029] 2) Fermentation of straw fermented product: use rice husk and rice straw as raw materials, and the ratio of the two is 1:1 by volume. The raw materials are crushed to a powder with a particle size of about 0.5 to 1.0 cm. The quality of rice husk and straw In total, add 10%-20% of livestock manure (cow manure, pig manure, chicken manure, etc.), and then inoculate straw decomposing agent special bacteria and 5-10% paddy soil accumulation It is fermented, and the moisture content is controlled at 80%, and it is piled into the fermentation tank for fermentation. When the temperature rises,...

Embodiment 1

[0033] A preparation method of rice charcoal-based seedling raising substrate includes the following steps:

[0034] 1) Preparation of biochar: After the straw is crushed, it is dried in an oven and heated for 2.5 hours in a carbonization furnace at a temperature of 500°C and isolated from the air to obtain biochar particles, which is biochar;

[0035] 2) Fermentation of straw fermented product: use rice husk and rice straw as raw materials, and the ratio of the two is 1:1 by volume. The raw materials are crushed to a powder with a particle size of about 0.5 to 1.0 cm. The quality of rice husk and straw In total, add 10%-20% of livestock manure (cow manure, pig manure, chicken manure, etc.) with a mass percentage of 10% to 20%, and then inoculate straw decomposing agent special bacteria and 8% of paddy soil for accumulation and fermentation. Control the moisture content at 80%, pile it into the fermentation tank for fermentation, when the temperature rises, mechanically turn the pi...

Embodiment 2

[0039] A preparation method of rice charcoal-based seedling raising substrate includes the following steps:

[0040] 1) Preparation of biochar: After the straw is crushed, it is dried in an oven and heated for 3 hours in a carbonization furnace at a temperature of 450°C and isolated from the air to obtain biochar particles, namely biochar;

[0041] 2) Fermentation of straw fermented product: use rice husk and rice straw as raw materials, and the ratio of the two is 1:1 by volume. The raw materials are crushed to a powder with a particle size of about 0.5 to 1.0 cm. The quality of rice husk and straw In total, 10% of the mass percentage of livestock manure (can be cow manure, pig manure, chicken manure, etc.) is added, and then inoculated with special bacteria for straw composting agent and 10% of paddy soil accumulation and fermentation. With a moisture content of 80%, it is piled into the fermentation tank for fermentation. When the temperature rises, the pile is mechanically turn...

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Abstract

The invention discloses a carbon-based rice seedling raising substrate for rice. The carbon-based rice seedling raising substrate comprises biochar, a straw fermented product, yellow soil, vermiculite and an inorganic fertilizer, wherein a volume ratio of the biochar to the straw fermented product to the yellow soil to the vermiculite is (10-20): (15-30): (25-35): (15-25); the inorganic fertilizer comprises nitrogen, phosphorus pentoxide and potassium oxide; and per 10 m<3> of the carbon-based rice seedling raising substrate for the rice comprises 12 to 18 g of a nitrogen fertilizer, 4 to 7 g of a phosphorus fertilizer and 5 to 16 parts of a potassium fertilizer. The invention also discloses a preparation method of the carbon-based rice seedling raising substrate for the rice. According to the invention, by utilizing the biochar and the fermented product which are prepared from widely-available farmland organic wastes like rice straws, and inorganic substances like the yellow soil and the vermiculite, the carbon-based rice seedling raising substrate for the rice is prepared. The substrate provided by the invention has the characteristics of fertility holding, water holding and good air permeability, and can effectively prevent the occurrences of bakanae disease, sheath blight and the like in a seedling stage.

Description

Technical field [0001] The invention belongs to the field of rice planting, and specifically relates to a rice charcoal-based seedling raising substrate and a preparation method. Background technique [0002] Rice is one of the most important food crops in my country, and its sown area accounts for about 1 / 4 of the total area of ​​food crops. In terms of production, a large amount of rice straw is produced every year, part of which is used for returning to the field, most of which is burned, which seriously pollutes the environment and causes waste of resources. At present, there are still many problems in directly using rice straw to make seedling substrates. [0003] The traditional rice seedling raising substrate is generally made of grass charcoal, mixed with perlite and vermiculite, etc., and processed by mixing. Peat is a non-renewable resource, and the price is increasing year by year. The state is also strengthening the supervision of peat mining. Biochar is a new type o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05F17/00A01G9/10
CPCA01G24/00C05C3/00C05F3/00C05F17/00C05G3/00C05D1/02C05D9/00C05F9/04C05G1/00C05F11/00C05F11/08Y02W30/40
Inventor 张义凯朱德峰
Owner CHINA NAT RICE RES INST
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