In the process of vegetable production in protected areas, due to excessive fertilization in successive years, some of the residual components in the fertilizer that are not absorbed by the vegetables will remain in the soil, accumulate more and more, causing damage to the soil and causing salinization and acidification of the soil. , leading to soil compaction, weak permeability, easy to cause a variety of diseases of vegetables. In the vegetable production process, by increasing the application of microbial bacterial fertilizer and reducing the application amount of chemical fertilizer, it can obviously improve the soil, reduce the production cost, and improve the quality of vegetables. This is because during the application process, the microbial fertilizer can activate the soil, decompose the nutrients fixed by the soil, thereby improving the absorption and utilization of the fertilizer, and the microorganisms in the microbial fertilizer can produce plants during the growth and reproduction process. Auxin stimulates crop growth and improves the quality of vegetables. Secondly, microorganisms can inhibit the occurrence and development of a variety of soil-borne diseases during the growth and reproduction process. They also have a strong inhibitory effect on root-knot nematode disease. It is a new type of fertilizer that is non-toxic, economical and environmentally friendly. It is worthy of being promoted and applied in the production of vegetable in protected areas. Pay attention to the following points when using microbial fertilizer reasonably:
1. Choose a brand-name product with a full range of documents and high bacteria content.
2. Microbial fertilizers have low nutrient content and must be applied in combination with other fertilizers. When the microbial fertilizer is applied, since the microorganisms in the microbial fertilizer have the effects of nitrogen fixation, phosphorus dissolving, potassium dissolving, bacteriostasis, soil activation, and nutrient utilization, the application amount of the fertilizer can be appropriately reduced after the application of such fertilizer.
3. The microorganisms in the microbial fertilizer need to be grown and propagated in a soil containing suitable water, so the soil moisture cannot be too dry and too wet.
4. Microbial fertilizers cannot be used with fungicides.
5. Microbial fertilizers, whether they are base fertilizers or top dressings, should not be exposed to the soil surface. The activity of microorganisms is reduced due to sunlight.
6. Pay attention to the production date, and the activity of microorganisms in the microbial fertilizer that has been placed for too long is degraded.
7. In the winter and spring, the ground temperature in the protected area is low, and the growth and reproduction of the low temperature microorganisms are slow and the activity is decreased. The ground temperature should be raised and covered with straw, which is beneficial to increase the ground temperature and enhance the activity of microorganisms.