Biogas fertilizer is a kind of high-efficiency organic fertilizer. The use of biogas fertilizer to grow vegetables can realize resource recycling, save expenditure and generate income. It can not only increase fertilizer efficiency, increase yield, but also prevent pests and diseases, reduce pesticide use, and develop pollution-free vegetable production. An effective way.
1. Biogas residue is used as base fertilizer. Use transplanted seedlings of vegetables, and basal fertilizer is carried out by hole application method. When seedlings are transplanted, about 2,000 kg of decomposed biogas residue per mu is applied to the planting hole, mixed with the excavated garden soil, and then planted. For vegetables that are planted on-demand or planted in a large area, the basal fertilizer is generally carried out by striping and drilling. For fruit and vegetable vegetables, such as pumpkins, winter melons, cucumbers, tomatoes, etc., the method of large holes and big fertilizer is generally adopted, and 3000 kg of biogas residue is used per acre, and the water is poured immediately after planting.
2. The biogas slurry is used for top dressing. The biogas slurry used as top dressing generally adopts two methods: root drenching and foliar spraying. The amount of the root drenching biogas slurry depends on the variety of vegetables, and the general dosage is 500-1000 kg per mu. The fertilization time is better in sunny days or evening, and it is not suitable to fertilize on rainy days or when the soil is too wet.
The biogas slurry sprayed on the foliar must be filtered through gauze before use. In the vegetable tender leaf period, the biogas slurry should be diluted with 3 times of water, and sprayed after the dew is dry. It is better to spray in the evening in summer, and not spray at noon or when it rains. Leafy vegetables can be fertilized at any growth period of the vegetables, and can also be combined with spraying of biogas slurry for disease prevention and pest control.
3. Biogas carbon dioxide fertilization method. Install 1 biogas lamp or 1 biogas stove for every 50-meter-long shed. When using biogas lamps to increase temperature in vegetable greenhouses, light the lamps directly from 5:30 to 8:30 every morning.
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