The temperature in winter is low. The application of biological fertilizer can not only activate the fixed nutrients in the soil, but also benefit the growth of the root system. However, it cannot be applied blindly. Money has no effect.
One is soil moisture
After applying the biological bacterial fertilizer, we must pay attention to reasonable watering. It is best to choose small water in the morning on a sunny day. This will not only increase the ground temperature, but also dehumidify the air. Note that it is best to paddle after watering to increase the permeability of the soil, which is conducive to the effect of biological bacteria.
Second, soil temperature
It is understood that the biological bacteria in biological fertilizer are generally the most active in the soil at 18 ℃ ~ 25 ℃, life activity began to decline below 15 ℃, below 10 ℃ activity capacity is already weak or even dormant. This requires first controlling the temperature in the shed, and using the temperature to promote the rise of ground temperature. Generally, the temperature in the shed should be kept at 25 ℃ ～ 30 ℃ during the day. The temperature in the shed is low at night. In order to avoid the loss of ground temperature and keep the ground temperature constant, in addition to mulching film, crop straw can be covered in the operation line.
Third, soil pH
The data show that: when the pH of the soil is between 6.5 and 7.5, it is most suitable for the reproduction of biological bacteria. Vegetable farmers can modify it according to their own soil conditions, so that the pH of the soil reaches 6.5 to 7.5 to ensure the large number of biological bacteria to reproduce. In addition, the function of biological bacterial fertilizer is achieved by the biological bacteria decomposing organic matter in the soil. If the organic fertilizer in the soil is insufficiently applied, it cannot decompose nutrients. Therefore, before planting vegetables, we must pay attention to applying organic fertilizer, generally about 5,000 kg per mu of land.
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