Wheat straw biochar fertilizer able to reduce heavy metal harm and preparation method thereof

A technology of wheat straw and biochar, which is applied in the direction of fertilization device, fertilizer mixture, application, etc., can solve the problems of restricting the agricultural promotion and utilization of biochar, inconvenient application, and large space occupation, so as to reduce the content of heavy metal exchangeable state, Effect of expanding porosity and specific surface area and reducing bioavailability

Inactive Publication Date: 2015-12-23
HEFEI XUTENG ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0004] However, due to the light weight of biochar, it is in the form of powder, takes up a lot of space, and the cost of transportation and storage is high. In addition, there

Method used

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Embodiment Construction

[0020] specific implementation plan

[0021] The present invention will be described in further detail below in conjunction with the following specific embodiments:

[0022] Weigh the following raw materials in parts by weight (kg): sea guano 35, coconut shell powder 26, magnesium carbonate 2, superphosphate 4, sodium octapolyborate tetrahydrate 2, edible fungus slag 28, xylose powder 12, Fresh Enteromorpha 90, compound microbial agent 6, wheat straw 250, fresh urine 24, appropriate amount of water;

[0023] The composite microbial bacterial agent includes Rhizopus oryzae, Bacillus subtilis and Bacillus cereus in a ratio of 1:2:2.

[0024] The concrete steps of the preparation of described fertilizer are as follows:

[0025] (1) Wash the enteromorpha, mash it, mix it with coconut shell powder, sea guano, and edible fungus residue, add water to the fermentation tank to adjust the water content to 58-62%, and then inoculate the compound microbial agent into the fermented produ...

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Abstract

The invention discloses a wheat straw biochar fertilizer able to reduce heavy metal harm and a preparation method thereof. The wheat straw biochar fertilizer is prepared from the following raw materials by weight part: 33-37 of guano, 25-27 of coconut shell powder, 2-3 of magnesium carbonate, 4-5 of calcium superphosphate, 2-3 of octamer sodium borate tetrahydrate, 25-30 of edible fungus residue, 10-14 of xylose powder, 80-100 of fresh enteromorpha, 6-7 of a compound microbial agent, 245-255 of wheat straw, 23-25 of fresh urine, and a proper amount of water. According to the invention, the use of xylose powder and coconut shell powder expands the porosity and specific surface area of charcoal fertilizer particles, various groups on the surface of the fertilizer and metal ions can undergo coordination and ion exchange reaction, and the fertilizer has strong adsorption capacity to heavy metals, plays a role of metal passivation, reduces the content of heavy metal exchangeable form in soil, thereby reducing the bio-availability of heavy metals, and providing guarantee for healthy growth of crops and product quality.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a wheat straw biochar fertilizer which reduces the harm of heavy metals and a preparation method thereof. Background technique [0002] Biochar is an organic substance rich in stable carbon obtained by oxygen-limited pyrolysis and carbonization of biomass. Biochar can not only effectively increase the organic carbon content in the soil, but also gradually improve soil fertility and water retention. Soil nutrient loss and other aspects also have good effects. [0003] As the proportion of my country's agricultural products exports continues to increase, agriculture's requirements for fertilizers and soil fertility will continue to upgrade. Therefore, the use of biochar fertilizers from the perspective of changes in the types of soil fertilizers and fertility improvements will have a significant impact on the adjustment of my country's agricultural structure and the export of a...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/04C05G3/80
Inventor 王菊
Owner HEFEI XUTENG ENVIRONMENTAL PROTECTION TECH
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