Microbial inoculum is a new type of fertilizer. Proper use can increase the yield of agricultural products, improve the quality of agricultural products, reduce the amount of chemical fertilizers, reduce costs, improve soil, and protect the ecological environment. So, do you know what the role of microbial inoculants is? How to use microbial agents? Let's find out together.
1. The main function of microbial inoculants:
1. Improve soil fertility: some inoculants can increase the content of nitrogen, phosphorus and potassium nutrients in the soil; they can also increase the activity of some soil enzymes, which is conducive to the transformation of nutrients in the soil and facilitates the absorption and utilization of plants. In addition, with the help of microbial inoculants, a large amount of carbon dioxide will be produced, which can improve soil water and fertilizer retention capabilities.
2. Promote the release of insoluble mineral nutrients: biological microbial inoculants increase the activity of soil enzymes, so that the dissolution of insoluble soil nutrients is conducive to plant absorption. At the same time, it also secretes some organic acid substances, which can decompose organic matter, and the sugar produced is conducive to the growth of nitrogen fixation.
3. Help crops absorb nutrients: For example, rhizobia can stimulate the roots of legumes to form root nodules, so that nitrogen in the soil can be converted into nitrogen fertilizer that crops can absorb.
4. Regulate crop growth: The microorganisms in the biological microbial inoculum can release auxin, indole acetic acid, gibberellin, etc. in the soil, which can regulate the growth of crops, and thus have the effect of increasing yield.
5. Enhance the stress resistance of plants: after the application of some biological microbial inoculants, they grow and multiply in the soil, and gather at the roots of crops to form dominant flora. Stress resistance.
2. How to use microbial inoculants well:
1. The application time of microbial inoculum is generally early morning or cloudy day. The Bacillus in the microbial inoculum cannot be exposed to direct sunlight, which will affect its reproduction, metabolism and other activities, and even deactivate it. It must be avoided in hot and high temperature weather.
2. Microbial agents have strict requirements on soil conditions, such as soil moisture content, organic matter content, and pH value, which will affect the performance of their effects. Generally, bacteria are suitable for living in soil with a water content of 60%-70%, so it should be watered immediately after application. The mixed application of bacterial fertilizer and organic fertilizer can significantly increase the content of organic matter in the soil.
3. The microbial inoculum should not be stored for a long time, and should be purchased as needed; it should be stored in a cool, dry and ventilated place before use to avoid heat, moisture and direct sunlight; after the fertilizer is opened, it should be used up at one time, otherwise it will cause other bacteria to enter and contaminate bacteria in fertilizers.
4. Do not use microbial inoculants with substances that can kill beneficial bacteria. Because inoculants contain a large amount of beneficial live bacteria, it is strictly forbidden to use fungicides, insecticides, herbicides and sulfur-containing fertilizers (such as potassium sulfate, etc. ) and mixed with straw ash. Because the substances in these pesticides or fertilizers can easily cause the inactivation of bacteria, causing them to lose their effectiveness. If applied, it should be used after a 48-hour interval.