About "nitrifying bacteria"

"nitrifying bacteria" is a very wide range of scientific research topics in the field of modern microbial science and technology. Here, the author puts forward his own immature point of view to discuss with my husband from the perspective of bluegrass cultivation.

The so-called "nitrifying bacteria" refers to a class of bacteria that use ammonia or nitrite as their main living energy and carbon dioxide as their main carbon source. Nitrifying bacteria is one of the ancient bacteria, which is widely distributed in soil, fresh water, seawater and sewage treatment systems, but rarely occurs in nature. The reason is that the distribution of nitrifying bacteria is affected by many environmental factors, such as nitrogen source, temperature, oxygen concentration, osmotic pressure, pH, salinity and so on.

"nitrifying bacteria" can be divided into "nitrifying bacteria" and "nitrifying bacteria". The main function of nitrifying bacteria is to convert ammonia nitrogen into nitrite, and the main function of nitrifying bacteria is to convert nitrite into nitrate. Ammonia nitrogen and nitrite are mostly toxic substances produced in the process of aquaculture or bluegrass cultivation, so how to degrade these two substances has long been the focus of scientists in recent years. Due to the rapid growth of nitrifying bacteria and photosynthetic bacteria also have the role of degradation of ammonia nitrogen, modern science and technology has been able to successfully control ammonia nitrogen at a lower level. As for nitrite, because the growth of nitrifying bacteria in nature is very slow and no other microorganisms can replace the function of nitrifying bacteria, nitrite produced in the process of culture and cultivation has become the key factor hindering the growth of bluegrass.

The organic or inorganic plant materials we use in the cultivation of bluegrass, the management of watering and fertilization, and the metabolism of bluegrass in the process of growth and development will accumulate a large amount of organic substances over a long period of time. these organic metabolites under the action of heterotrophic bacteria, the proteins and nucleic acids will slowly decompose, producing a large number of ammonia and other nitrogen-containing harmful substances. Ammonia is converted to nitrous acid under the action of nitrifying bacteria or photosynthetic bacteria. Nitrous acid can combine with some metal ions to form nitrite, and nitrite can combine with amines to form nitrosamines with strong carcinogenic effect. Therefore, nitrite is often compared with the infamous ammonia. Due to long-term nitrite accumulation poisoning, bluegrass will reduce its own disease resistance and easily lead to the invasion of various pathogens, so it is often regarded as the pathogenic source of bluegrass. However, when nitrous acid is transformed into nitric acid under the action of nitrifying bacteria, it is easy to form nitrate, which can be absorbed and utilized by plants. Therefore, the relationship between nitrifying bacteria and orchid cultivation environment is very close.

We all know that nitrification must be accomplished by autotrophic nitrifying bacteria. The soil is rich in nitrogen sources, which is originally very suitable for the growth of nitrifying bacteria, but due to the different plants used by individuals in bluegrass cultivation, there may also be a large number of heterotrophic bacteria in the plants, which may be repelled by heterotrophic bacteria. the place suitable for nitrifying bacteria is obviously much less than the natural environment, so there are not enough autotrophic nitrifying bacteria to consume excess nitrite nitrogen. This is the problem that people who raise orchids should discuss.

With regard to Mr. A's proposal: "I know that ammonia nitrogen compounds such as ionized ammonium in water promote the growth of nitrifying bacteria, some of which can increase the growth of nitrifying bacteria under acidic aerobic conditions (such an environment is also needed for orchid cultivation). And now there is a technology that uses zeolites to adsorb ionized ammonium in water, and when the concentration of ionized ammonium in water decreases, it can release the adsorbed ionic ammonium for nitrifying bacteria to reproduce. I wonder if this has anything in common with "active soil"? ", in this simple reply," active soil "is based on the principle of tissue culture, combined with microbiology, botany and seaweed science. It is called" active soil "because it can stimulate the activity of orchid and photosynthetic nitrifying bacteria and promote the reproduction of orchid and beneficial nitrifying bacteria in plant materials. To supply the main source of nutrients for the growth of orchid plants and to provide the necessary trace elements, these fungi are beneficial bacteria. Its practical function is to provide the best natural optimization environment based on the complex symbiotic balance relationship between orchid and orchid root cells for the growth of orchid bacteria. This balance can not be achieved artificially by chemical synthetic fertilizers or growth agents. On the other hand, It can filter and purify harmful toxins in water and eliminate latent bacteria in plants, so that orchid plants can grow healthily and rapidly and improve the rate of seedling emergence.

The composition of "active soil" is composed of seaweed as the matrix and combined with a variety of elements. its main function is to rapidly propagate blue bacteria and activate photosynthetic nitrifying bacteria. make it quickly decompose and transform the organic matter into carbohydrates, fatty acids, vitamin B groups and elemental elements, so that the orchid root can be absorbed quickly, promote the growth function of the orchid plant, and improve the seedling rate of the orchid plant.

Active soil has the following five main functions:

1. Enzyme action: animals and plants can absorb nutrients, the main key force lies in the enzyme action. Active soil can promote the production of enzymes by blue bacteria so that phosphorus, potassium and trace elements can be easily absorbed. And can prevent the soil from hardening. It can also quickly decompose harmful substances and agricultural poisons in fertilizers. After planting, the leaves turn dark green and the leaves become thicker. It is easy to increase the germination rate of orchid plants.

2. High efficiency decomposition of organic matter: organic humic acid is transformed into solid particle structure, which has good absorption of solar thermal oxidation and strong water retention.

3. Activation of soil bacteria: active soil can promote the increase of secretion of aerobic bacteria, decompose sulfides, salts and nitrides, prevent soil acidification and improve fertilizer efficiency. Activating aerobic bacteria can reduce acidic diseases, decompose harmful substances, and increase the reproduction of nitrogen-fixing bacteria, so that free nitrogen in the air can be fully utilized.

4. Fermentation function:

(1) the respiration of activated bacteria is good, which produces carbon dioxide and produces plant nutrition.

(2) the breathing heat produces the temperature rising effect, which increases the temperature in the orchid basin by 2-3 degrees Celsius, interacts with each other, prevents frostbite of the root group, and makes the orchid plant grow vigorously in the early stage of pot change.

5. Water quality improvement: active soil can activate aerobic photosynthetic nitrifying bacteria in plants, then decompose toxic substances in water and purify water quality.

Taiwan Guo Jianmiao