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Activator for soil phosphorus, and preparation method and application thereof

A soil phosphorus and activator technology, applied in the application, fertilizers made from biological waste, organic fertilizers, etc., can solve problems such as low efficiency and instability, and achieve the goal of protecting the environment, saving energy, increasing production and economic benefits. Effect

Active Publication Date: 2017-09-15
JILIN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the action of phosphorus microorganisms on insoluble phosphorus depends on the nature of the microorganisms. Since the activity of microorganisms is greatly affected by the natural environment, the conversion of insoluble phosphorus in soil by phosphorus-solubilizing microorganisms is inefficient and unstable. question

Method used

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  • Activator for soil phosphorus, and preparation method and application thereof
  • Activator for soil phosphorus, and preparation method and application thereof
  • Activator for soil phosphorus, and preparation method and application thereof

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preparation example Construction

[0031] The present invention also provides a preparation method of the above-mentioned soil phosphorus activator, comprising the steps of:

[0032] (1) activating the phosphorus-solubilizing microorganisms, expanding the culture to obtain the phosphorus-solubilizing bacteria fermentation liquid;

[0033] (2) Adsorbing the fermented liquid of the phosphate-dissolving bacteria on the carrier, and mixing it with the protective agent to obtain a soil phosphorus activator.

[0034] The phosphorus-solubilizing microorganism of the present invention is preferably a solid or liquid phosphorus-solubilizing microorganism preserved on a slant, and the type of the phosphorus-solubilizing microorganism is preferably Bacillus megaterium. The preserved phosphate-solubilizing microorganisms are activated and cultivated in LB medium, and the conditions of the activated culture are: 26-28° C., 160-180 r / min. After culturing for 3 to 5 days, the obtained phosphorus-solubilizing microorganism acti...

Embodiment 1

[0039] A soil phosphorus activator (recorded as F1, wherein F represents a carrier and 1 represents a protective agent) comprises 20% phosphorus-solubilizing microorganisms, 75% carrier and 5% protective agent by weight percentage. The phosphorus-solubilizing microorganism is Bacillus megaterium. The carrier is 60% grass carbon, 30% bran and 10% cake flour in terms of weight percentage. The protective agent is bone meal and gelatin mixed in a weight ratio of 1:1.

[0040] Its preparation method comprises the following steps:

[0041] Take the solid Bacillus megaterium preserved on the slant, inoculate it in 50ml sterilized LB medium, cultivate it at 28°C and 180r / min for 3 days, then insert it into the inorganic phosphorus fermentation culture medium and cultivate it for 3 days, then it will be dissolved. Phosphorus fermentation broth. The fermentation liquid of phosphate-dissolving bacteria is adsorbed on the carrier, and at the same time, a protective agent is added, and ...

Embodiment 2

[0043] A soil phosphorus activator (recorded as F2, wherein F represents a carrier and 2 represents a protective agent) comprises 20% phosphorus-solubilizing microorganisms, 75% carrier and 5% protective agent by weight percentage. The phosphorus-solubilizing microorganism is Bacillus megaterium. The carrier is 60% grass carbon, 30% bran and 10% cake flour in terms of weight percentage. The protecting agent is citric acid and gelatin mixed in a weight ratio of 1:1.

[0044] Adopt the method for embodiment 1 to prepare soil phosphorus activator.

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Abstract

The invention relates to especially relates to an activator for soil phosphorus, belonging to the technical field of activation of phosphorus. The activator for soil phosphorus comprises, by weight, 15 to 25 parts of phosphorus-dissolving microbes, 70 to 80 parts of a carrier and 2 to 8 parts of a protective agent, wherein the protective agent is one or a mixture of more than one selected from a group consisting of bone meal, gelatin, citric acid and amino acid. The invention also provides a preparation method and application of the activator for soil phosphorus. The activator for soil phosphorus in the invention can activate slightly-soluble phosphorus in soil, improve the state of phosphorus in soil and help plants in synergistic absorption of nitrogen, phosphorus and potassium, so the application amount of fertilizer is reduced, the efficiency of fertilizer is improved, and the activator exerts good ecological effect on energy conservation and environmental protection.

Description

technical field [0001] The invention relates to the technical field of phosphorus activation, in particular to a soil phosphorus activator and its preparation method and application. Background technique [0002] Phosphorus, as one of the main limiting nutritional factors for increasing grain production in the world today, has been facing such an embarrassing situation. That is to say, on the one hand, the phosphorus-rich ore resources are gradually depleted. According to statistics, P in my country's phosphate ore resources 2 o 5 Medium and low-grade phosphate rocks with an average content of 17% to 25% account for more than 80% of the total resources, P 2 o 5 The rich ore with a content of more than 30% only accounts for about 8% of the total, and the available phosphorus in the soil is seriously insufficient. On the other hand, the soil absorbs and fixes a large amount of chemical phosphate fertilizers, resulting in a generally low utilization rate of phosphate fertil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05B17/00C05F5/002C05G3/80C05F11/00C05F11/02C05F11/08C05C11/00
Inventor 吴海燕范作伟金荣德盖嘉慧牛红红张国辉武巍
Owner JILIN ACAD OF AGRI SCI
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