Natural microbial fertilizer Bacillus subtilis

The effects of Bacillus subtilis on plants are mainly reflected in the following aspects:枯草芽孢杆菌对植物的影响主要体现在以下几个方面:

1. Competition between nutrition and spatial sites1. 营养与空间站点之间的竞争

The competition of Bacillus subtilis mainly includes nutrition competition and spatial site competition. It can reproduce and colonize rapidly and in large quantities in plant rhizosphere, body surface, body and soil, effectively repelling, preventing and interfering with the colonization and infection of plant pathogenic microorganisms on plants, so as to achieve the effects of bacteriostasis and disease prevention.枯草芽孢杆菌的竞争主要包括营养竞争和空间场地竞争。它能在植物根际、体表、机体和土壤中快速、大量地繁殖定植，有效地排斥、预防和干扰植物病原微生物在植物上的定植和感染，从而达到抑菌防病的效果。

2. Produce antibacterial substances2. 产生抗菌物质

Bacillus subtilis 枯草芽孢杆菌 can produce a variety of substances with bacteriostatic and bactericidal effects in the growth process, such as Bacillus subtilis, organic acid, antibacterial protein, etc. These substances can inhibit the growth and reproduction of pathogenic bacteria, even destroy the structure of bacteria and kill pathogenic bacteria. Therefore, Bacillus subtilis has a good effect on the prevention and treatment of diseases such as stubble disease, root rot, gray mold, etc.能在生长过程中产生多种具有抑菌杀菌作用的物质，如枯草芽孢杆菌、有机酸、抗菌蛋白等。这些物质可以抑制致病菌的生长繁殖，甚至破坏细菌的结构，杀死致病菌。因此，枯草芽孢杆菌对茬病、根腐病、灰霉病等病害的防治有很好的效果。

3. Enhance immunity and promote growth3. 增强免疫力，促进生长

Bacillus subtilis  枯草芽孢杆菌can secrete active matter, activate the plant defense system, enhance the immunity and disease resistance of crops, and reduce or eliminate the harm of pathogenic bacteria to plants. It can also promote the growth and development of seeds, seedlings and root systems of various plants, enhance the disease resistance of plants, thus indirectly reducing the occurrence of diseases. For example, increase the formation of auxin such as indoleacetic acid, stimulate the development of crop root system and enhance photosynthesis. At the same time, the substances that are difficult to absorb in the soil are converted into substances that are easy to be absorbed by crops, so as to promote the absorption and utilization of nutrients by crops and improve the utilization rate of fertilizers.能分泌活性物质，激活植物防御系统，增强作物的免疫力和抗病性，减少或消除致病菌对植物的危害。还可以促进各种植物的种子、幼苗和根系的生长发育，增强植物的抗病性，从而间接减少疾病的发生。如增加吲哚乙酸等生长素的形成，刺激作物根系发育，增强光合作用。同时将土壤中难以吸收的物质转化为易于被作物吸收的物质，从而促进作物对养分的吸收利用，提高肥料的利用率。

4. Induce plants to produce resistance4. 诱导植物产生抗性

Bacillus subtilis 枯草芽孢杆菌 can not only directly inhibit plant pathogenic bacteria, but also enhance plant disease resistance by inducing plant's own disease resistance potential. For example, Bacillus subtilis, a biocontrol bacterium of rice sheath blight, can induce the activity of enzymes (POD, AKT and SOD) related to disease resistance in rice leaf sheath cells to increase and achieve the effect of disease resistance.不仅可以直接抑制植物致病菌，还可以通过诱导植物自身的抗病潜能来增强植物的抗病性。如水稻纹枯病的生防菌枯草芽孢杆菌(Bacillus subtilis)可诱导水稻叶鞘细胞中与抗病相关的酶(POD、AKT和SOD)活性增加，达到抗病的效果。

5. Improve soil structure5. 改善土壤结构

Bacillus subtilis 枯草芽孢杆菌 forms a probiotic environment in the soil, promotes the formation of pellet structure, improves the ability of soil to keep fertilizer and water, increases the degree of soil looseness, and promotes the growth of root system. The specific performance is to accelerate the mineralization of nutrient and change the nutrient from ineffective state and slow-acting state to effective state and quick-acting state. At the same time, accelerate the humification of nutrients, secrete phytase, degrade most of the phytate in the soil; Produce auxin, stimulate the growth of crops, and improve the survival rate and emergence rate of seeds.在土壤中形成益生菌环境，促进颗粒结构的形成，提高土壤保肥保水能力，增加土壤疏松程度，促进根系生长。具体表现为加速营养物质的矿化，使营养物质由无效、慢效状态转变为有效、速效状态。同时，加速养分腐殖化，分泌植酸酶，降解土壤中的大部分植酸;产生生长素，刺激作物生长，提高种子成活率和出苗率。