Celery skillful application of five fertilizer technology



Miao fertilizer
Method for preparing nutrient soil: Mixing vegetable garden soil with high-quality decomposed organic fertilizer for 3 years without celery, and adding appropriate amount of ternary compound fertilizer. The nursery bed soil is mixed with 50% carbendazim wettable powder and 50% thiram wettable powder by 1:1, or with 25% metalaxyl WP and 70% mancozeb wettable powder by 9:1. Mix and disinfect, mix 8 grams - 10 grams per square meter with 15 kilograms - 30 kilograms of fine soil, take 1/3 on the surface, and then cover the remaining 2 / 3 of the soil on the seeds.
2. Base fertilizer
The production is based on base fertilizer, accounting for about 80% of the total fertilization amount. The medium-fertilizer soil uses 3,000 kg-5000 kg of high-quality decomposed organic fertilizer per 667 square meters, and 40 kg-50 kg of ternary compound fertilizer. Borax 5 kg - 10 kg. After fertilization, plow 20 cm - 30 cm.
3. Top dressing
When planting or slowing down the seedlings, quick-acting nitrogen fertilizer should be applied. When ditching, 15-20 kg of ammonium sulfate should be applied every 667 square meters. After the seedlings are finished, topdress every 10 days, combined with watering, topdressing with water, using 1000 kg of decomposed human excrement or 10 kg of urea and potassium sulfate per 667 square meters, and topdressing 2-3 times.
4. Foliar fertilizer
In order to prevent the loss of boron in the late stage of celery, it can be sprayed with calcium magnesium phosphate leachate or 0.3-0.4% borax in the middle growth stage. 15 days to 20 days before harvest, a solution of 20 mg to 50 mg per gram of gibberellin can be sprayed once afloat.
5. Gas fertilizer
The application of carbon dioxide in greenhouse vegetables can increase the plant height, increase the stem and petiole, and promote the yield increase. Generally, the chemical reaction between dilute sulfuric acid and ammonium hydrogen sulfate occurs. The period of use can be from 40 days to 60 days (on rainy days), and 1-2 kilograms of carbon dioxide per day for each 667 square meters of protected land. .

Huaxian County Agricultural Products Inspection and Testing Center
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