Since the implementation of the Ecological Homeland Enrichment Project in 2003, there have been more than 10,000 biogas tanks in Jingxian County, providing a lot of biogas slurry and biogas residue for the planting industry. Last year, Guma Village in Guma Town achieved a bumper harvest with the use of biofertilizers. The yield per mu increased by 495 kilograms, and the increase rate was 19.8%. Not only was the yield high and the quality was good, but also the resistance to watermelon wilt was enhanced. Its main technology is as follows:
First, soaking
1. Drying: Soaking seeds for 1 to 2 days before soaking to increase the seed absorption and kill most pathogens.
2. Biogas tank selection: Choose a good biogas digester, preferably a biogas digester with normal gas production for more than 3 months, remove the impurities in the water pressure for use.
3. Seed germination: Pack the seeds with a good water permeability woven bag, and leave a certain amount of bag capacity, tie the bag mouth into the lower part of the discharge chamber, soak the seeds for 8 to 12 hours, agitate halfway, remove the light after the endæ“ 1 minute, wash, heat and germination 1 to 2 days, temperature about 30 °C, generally 20 to 24 hours to germinate.
Second, sowing
1. Preparation of nutritious soil: Take 1 part of composted biogas slurry and mix it with 10 vegetable garden soils. Add 1 kg of phosphorus and potassium fertilizer per cubic meter of mixed soil. Spray water into the hands and knead it into groups.
2. Seeding: The nutritious soil is loaded into the nutrient bowl. When the seeds are white, they can be sowed in the nutrient bowl, with 1 to 2 seeds per pot, covering 1 to 1.5 centimeters thick fine soil, covered with film, sealed and properly ventilated. .
Third, fertilization
1. Basal fertilizer: One week before transplanting, biogas residue is applied to Daegu melon, applying 2,500 kg of bio-residue per mu, which can be supplemented with 50 kg of potassium, phosphate fertilizer, and deeply turned into soil. It is not advisable to apply the soil too early to avoid loss of fat from ammonia conversion.
2. Top dressing: After the live tree, apply 1 to 2 batches of biogas slurry, about 500 kg/mu each time, and the concentration is biogas slurry: fresh water = 1:2.
3. Fruit Fertilizer: After the fruit is out of the vine, reapply a fruit fertilizer, open a 10 to 20 cm circular groove, apply 100 kg cake fertilizer per acre, 50 kg of biogas fertilizer, 10 kg of potassium fertilizer, and cover the soil in the trench after fertilization.
4. Leaf spray fertilizer. Watermelon wilt is the enemy of watermelon production. It extends from the beginning of the vine. It sprays 2 times of water in 7 to 10 days. Later it is used to spray 1 times of water in the biogas slurry, which can not only increase the yield, but also increase the yield. Effective control of watermelon wilt. Other management is the same as conventional.
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