Compound microbial agent capable of increasing available phosphorus and potassium in crop soil and preparation method

Abstract

The invention belongs to the technical field of biological bacterial fertilizer, and particularly relates to a compound microbial agent. The compound microbial agent is prepared from five soil beneficial bacteria and three synergists, wherein bacillus licheniformis (TMQD01), bacillus megatherium (TMQJ05), silicate bacterium (TMQJ01), rhodopseudomonas palustris (TMQZ08) and lactobacillus cased (TMQR01) are mixed according to the effective viable counts being (0.8-1):(0.8-1):(2.5-3):(1.0-1.2):4, and it is ensured that the viable count is not smaller than 3 billion / ml; organic acid, water solubleamino acid, gamma-polyglutamic acid and other synergists, solid phosphorus and potassium in soil are dissolved, available phosphorus and potassium in soil are increased, the purpose of dissolving phosphorus and potassium is achieved, the photosynthetic effect rate is increased, plant fructification is promoted, crop disease resistance is improved, and the effect of reducing agricultural capital input is achieved.

Description

technical field [0001] The invention belongs to the technical field of agricultural microbial bacterial agents, and in particular relates to a compound microbial bacterial agent for increasing crop soil available phosphorus and potassium and a preparation method. Background technique [0002] As the three major elements needed by plants, nitrogen, phosphorus, and potassium play a decisive role in the growth process of plants. They are also the elements that take away the most when plants are harvested, but the amount they return to the soil in the form of stubble and roots is not much. , so a large amount of external supplementation of these nutrients is required. [0003] As an essential nutrient for plant growth, nitrogen is a component of protein, nucleic acid and chlorophyll in plants, and has a very obvious impact on plant growth and development. [0004] Potassium is the main nutrient element of plants, and it is also one of the main factors that often affect crop yie...

AI Technical Summary

Problems solved by technology

[0006] The soil available phosphorus content in most areas of my country is lower than 20mg / kg, and the available potassium content is lower than 150mg / Kg, which is a low content. The lack of effective nutrients seriously restricts the development of agriculture. There are two main ways to solve this problem: One is to rely on external supply for a long time, and to increase the effective nutrients of the soil through the application of a large amount of chemical fertilizers. The other is to increase the use of immobilized phosphorus and potassium in the soil. From the perspective of the impact of agricultural development on the environment and sustainable development, phosphorus and potassium are first of all Non-renewable resources, according to the current mining situation, the phosphorus and potassium resources on the earth can only be continuously mined for hundreds of years, and the phosphorus and potassium resources in my country are far from meeting the domestic consumption, and the quality is low, mainly dependent on imports

Secondly, the use of a large amount of phosphoric acid and potassium oxide also increases the cost of agricultural production. Thirdly, the use of a large amount of phosphate, potassium salt, etc., the utilization rate of crops in the current season does not exceed 30%, and most of them are still solidified in the soil. not available to plants