Five notes on the application of biogas fertilizer
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The biogas fertilizer includes biogas residue and biogas slurry, which has both quick-acting ingredients and slow-acting ingredients, and is a good fertilizer with slow speed and excellent performance. The application of biogas fertilizer not only saves fertilizers and pesticides, but also enhances the ability of crops to resist drought and cold, increase the survival rate of seedlings, and produce green food. However, the following five points should be noted when applying biogas:
First, do not apply immediately after the pool. The reductive nature of the biogas fertilizer is strong. Immediately after application, the biogas fertilizer will be used to 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 biogas fertilizer is discharged from the pond, it is generally stored in the septic tank for 5-7 days before being applied; the biogas residue and the phosphate fertilizer are mixed in a ratio of 10:1 for 5-7 days, and the effect is better.
Second, do not spray directly with water. The biogas slurry is sprayed directly on the crop without water, especially on the seedlings and young leaves, which will cause burns on the crops. When the biogas slurry is used for foliar topdressing, the general principle is: 1 part of the biogas slurry in the seedling and young leaves, plus 1-2 parts of clear water; high temperature in summer, 1 part of biogas slurry plus 1 part of clear water, lower temperature, and old leaves. No need to add water.
Third, do not overdosing. The amount of biogas fertilizer applied should not be too much, generally less than the application of ordinary organic fertilizer. If blindly applied in large quantities, the crops will be long and the crops will be shaded, resulting in reduced production.
4. Do not mix with alkaline fertilizers such as grass ash and lime. The ash, lime and other alkalis are strong, and mixed with the biogas fertilizer will cause the loss of nitrogen fertilizer in the biogas fertilizer and reduce the fertilizer efficiency.
5. Do not apply directly to the surface. The biogas fertilizer should be applied by acupoints or strips and then covered with soil.
Huaxian Guanguang School Li Dongxia