Precautions for application of biogas fertilizer

With the continuous promotion of rural biogas digesters, biogas residue is widely used in agriculture, especially for crops. The following describes the precautions for applying biogas tank fertilizer:

1. The biogas residue cannot be applied immediately after it is discharged from the pond. The biogas residue has strong reducibility. If it is applied immediately after the pond, it will compete with the crop for oxygen in the soil, affecting seed germination and root development, resulting in yellowing and wilting of the crop leaves. Therefore, after the pond is discharged, it should be stored in the septic tank for 5-7 days before application. If it is mixed with the phosphate fertilizer in a ratio of 10:1 for 5-7 days, the effect is better.

2. The biogas slurry can not be directly applied without water. When the biogas slurry is used as a top dressing, especially when the seedlings are applied, the water should be washed first, otherwise the crop will be burned.

3. The biogas residue cannot be applied to the topsoil. The application of biogas residue to dryland crops should be done by drilling or ditching, then covering the soil, applying it to the paddy field and spreading the field evenly, then plowing it into the bottom layer.

4. Do not apply excessively. The application rate is generally less than that of ordinary pig manure. If blindly applied in large quantities, the crop length will be reduced.

5, can not be mixed with grass ash, lime and Other alkaline fertilizers, otherwise it will reduce fertilizer efficiency.