In the cold winter and spring, the use of biological bacterial fertilizer can not only activate the nutrient elements fixed in the soil, but also benefit the growth of the root system, but it should not be used blindly. It should be determined according to the soil environment of different sheds, otherwise it is likely to be Spend the money but get no effect. Here is an introduction to the application technology of biological bacterial fertilizer in winter and spring.
1. Soil moisture
Excessive or insufficient soil water content will affect the application effect of biological fertilizer. Because most of the biological bacteria in the biological bacterial fertilizer are aerobic bacteria, its vitality is active when the soil sees dry and wet. Therefore, after applying biological bacterial fertilizer, you must pay attention to watering properly, and choose small water in the morning on a sunny day, which can not only increase the ground temperature, but also discharge moisture through air. Pay attention to hoeing after watering, in order to increase the permeability of the soil, which is conducive to the effect of biological bacteria.
2. Soil temperature
The biological bacteria in the biological fertilizer are generally the most active when the soil is 18℃-25℃, the life activity begins to decrease when the temperature is below 15℃, and the activity ability is very weak when the temperature is below 10℃, even in a dormant state. Therefore, after applying bacterial fertilizer to greenhouse vegetables in winter and spring, attention should be paid to regulating the ground temperature. First, control the temperature in the shed, and use it to promote the rise of ground temperature. Generally, the temperature in the shed should be kept at 25℃-30℃ during the day, and the temperature in the shed at night is low. In order to avoid the loss of ground temperature and keep the ground temperature constant, in addition to mulching, crop straws can be covered in the operation line.
3. Soil pH
The acidic or alkaline soil is not conducive to the growth and reproduction of biological bacteria. When the soil pH value is between 6.5-7.5, it is most suitable for the reproduction of biological bacteria. Vegetable farmers can make modifications according to the soil conditions to make the soil pH value reach 6.5-7.5 to ensure the proliferation of biological bacteria.
Fourth, increase the application of organic fertilizer
After applying biological bacterial fertilizer, pay attention to increase the application of organic fertilizer. Because biological bacteria can only exert their effects when the soil is rich in organic matter. Therefore, before planting vegetables, you must pay attention to applying sufficient organic fertilizer, generally about 5000 kg per mu.
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