In order to better play the role of biogas digesters, make full use of biogas fertilizers to create “pollution-free†agricultural products in agricultural production, and establish ecological agriculture. Now we introduce the comprehensive utilization technology of biogas fertilizers.
First, the comprehensive utilization of biogas slurry (A) Soaking with biogas slurry can increase the seed germination rate by 15-20%, and early emergence of seedlings by 1-2 days, Miao Qi Miao Zhuang, disease resistance. Operation method: Use a good permeable plastic woven bag, put the selected seeds 15-20 kg (remember to leave a little space), tie the bag mouth, put in the middle and lower part of the discharge soaking, such as rice and other shelled Seeds are soaked for 48-60 hours. Seeds of shells, such as corn, are soaked for 12-18 hours. The seeds are then rinsed, dried, and germinated before sowing.
(2) Foliar spray of biogas slurry can increase the yield and quality of crops, and can control various pests and diseases such as aphids, red, yellow spiders, sheath blight, and grape powdery mildew, especially vegetables and fruits. Method of operation: Use biogas slurry with normal gas production for more than 3 months. Spray the biogas slurry after filtration on the back of the leaves. Do not spray at high temperatures at noon.
(3) Biogas slurry control pests and diseases 1. Biogas slurry control 50 kg of corn biogas slurry, add 2.5% emulsified EC 10 ml, stir well, and pour corn kernel leaves.
2, biogas liquid control vegetable worms take 30 kg of biogas slurry per 667 square meters, add 50 kg of kerosene, detergent 10 grams, spray. It is also possible to use direct sunlight when the temperature is high on sunny days.
3. Biogas slurry control 50 gram of biogas slurry per 667 square meters of wheat mash, add 2.5 grams of dimethoate, dry after sunny dew, spray, if it rains within 6 hours, it should be spilled once. Aphids were inactivated 28 hours, died 40-50 hours, and the kill rate was 94.7%.
II. Comprehensive Utilization of Biogas Slag (I) Techniques for Biogas Fertilizer Dryland Cultivation 1. Seedbed Production: Before soil preparation, 667 kg (mu) of biogas residue is sprinkled into the seedbed and cultivated 2-3 times.畦 畦, 畦 width 140 cm, 畦 height 15 cm.畦 ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ ä¸ 10 10.
2. Preparation before planting: Prepare 80-100 kg/667 square meters (mu) of middle membrane or 10-12 kg/667 square meters (mu) of mulch, 450 pieces of bamboo/667 square meters (mu), and add seeds. Biogas slurry soaking and germination.
3, sowing: Before sowing, gently flatten the surface with a wooden board, the surface of the gap with fine soil filled with compaction, with a watering evenly sprinkled to 5 cm soil moisture. After the seeds are sown, use spare dry fine soil evenly on the seed surface, and the seeds will not be exposed. Then gently flatten with a wooden board and spray with a sprayer to keep the topsoil wet.
4. Seedbed Management: The seeds should keep the soil moist when they enter the rooting stage. When the drought occurs, the film can be opened and sprayed with a sprayer. When two leaves and one core grow, if the leaves do not roll, watering can be stopped to promote rooting. After the three leaves and one core are grown, they can be poured. One week before the seedlings are planted and excreted, they can be diluted with 1x diluted biogas slurry to send the fertilizer.
5. Note: The used biogas slurry and biogas residue must be fully decomposed.
(B) fertilization of vegetable fertilization technology 1, biogas residue as a base fertilizer: the use of transplanted seedlings of vegetables, base fertilizer to cave method. When the seedlings are transplanted, 2,000 square meters (mu) per 667 square meters (mu) will be applied to the planting hole with the maturity of the biogas residue, and mixed with the garden soil excavated from the hole to be planted. For vegetables planted on-demand or in large areas, basal fertilizers are generally applied in the method of seeding. For melons, such as pumpkin, wax gourd, cucumber, tomato, etc., commonly used large hole fertilizer method, every 667 square meters (mu) with 3000 kg of biogas residue, 35 kg of superphosphate, 100 kg of grass ash and the amount of domestic waste mixed Into the hole, cover with a layer of garden soil about 5-10 cm thick, immediately after planting drench water, timely cover with straw or wheat straw.
2. Biogas slurry is used as top dressing: two methods are commonly used: root leaching and foliar spray. The quantity of biogas slurry poured into the root can be determined according to the variety of vegetables. Generally, the dosage is 500-3000 kg per 667 square meters (mu). The fertilization time should be sunny or late in the evening, and it should not be applied when it is raining or when the soil is too wet. Foliar sprayed biogas slurry must be filtered before use.
3. Note: When biogas residue is used as base fertilizer, biogas residue must be matured outside the biogas digester.
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