Main vegetable science fertilization technology
Vegetable vegetables
For the outstanding problems of low organic fertilizer application, partial application, and excessive application of chemical fertilizers on fertilized vegetables, the basic fertilizer is dominated by organic fertilizers, and topdressing fertilizers are mainly available nitrogen fertilizers. Combined with phosphorus and potash fertilizers, attention is paid to Application of calcium and magnesium fertilizers.
Organic Fertilizer Application: About 3,000 kilograms of organic fertilizer has been decomposed and harmlessly treated per acre.
NPK application: below 1500 kg per acre yield, 12 kg of N fertilizer per mu, 6 kg of P fertilizer and 9 kg of potash; the yield per acre is between 1500 and 2000 kg, 11 kg of N fertilizer per mu, and 5.5 kg of P fertilizer. Potash fertilizer 8.5 kilograms; per acre yield levels above 2000 kilograms, Mushi nitrogen fertilizer 10 kilograms, phosphate fertilizer 5 kilograms, potash 8 kilograms.
Fertilization ratio: Basal fertilizer, generally 100% organic fertilizer, 100% phosphate fertilizer and 20% nitrogen and potassium fertilizer are used as base fertilizer before planting or transplanting. Miao Fei, the amount of nitrogen, potassium fertilizer is generally 10% of the total. During the vigorous growth period, the amount of fertilizer is generally 80% of the total amount of nitrogen and potassium fertilizers, and the top-dressing fertilizers are top-dressed every 10 days or so. In addition, most leafy vegetables are hi-calcium and hi-magnesium crops. For areas where soil-exchangeable calcium and magnesium are below critical values, calcium-magnesium-phosphate fertilizers should be used, supplementing 10-20 kg of lime per mu, or at the seedling stage. During the vigorous growth period, 0.3% calcium chloride solution or 0.25% to 0.5% calcium nitrate solution is sprayed to prevent the leafy vegetables from seriously affecting the product and quality due to physiological calcium deficiency or magnesium deficiency.
Melon, eggplant, fruit, bean vegetables
To solve the outstanding problems such as low organic fertilizer application, partial application or excessive nitrogen fertilizer application, and neglect of potash fertilizer application on melon, eggplant, fruit and legumes, we adhere to the combination of organic fertilizers and nitrogen, phosphorus and potassium. Application of potassium fertilizer in the middle and later stages has an important role in reducing malformed fruit and improving fruit quality.
Organic Fertilizer Application: Apply about 3000 metric tablets per acre.
NPK application: below 2000 kg per acre yield, 13 kg of N fertilizer per mu, 7 kg of P fertilizer and 10 kg of potash; the yield per acre is between 2000 and 2500 kg, 12 kg of N fertilizer per mu, and 6.5 kg of phosphate fertilizer. Potash fertilizer 9.5 kilograms; per acre yield levels above 2500 kilograms, Mushi nitrogen 11 kg, phosphate 6 kg, potassium 9 kg.
Fertilization method: basal fertilizer, generally before transplanting high-quality soil miscellaneous fertilizer or pig, cow manure 3000 kg, while 100% of the phosphate fertilizer and 20% of nitrogen and potassium fertilizer as a deep application of base fertilizer. Miao Fei, the amount of nitrogen, potassium fertilizer is generally 10% of the total. During the ear development period, the amount of fertilizer applied is generally 70% of the total amount of nitrogen and potassium fertilizers applied. During this period, topdressing should be performed in batches and fertilizer should be applied once every 10 days. In the middle and late period, spraying 0.2% potassium dihydrogen phosphate solution 2 to 3 times, has a good effect.
Root and stem vegetables
For roots and stem vegetables in the fertilization on organic fertilizer application is low, partial application and excessive application of nitrogen fertilizer, as well as neglect of potassium fertilizer application and other outstanding issues, adhere to the main organic fertilizer, chemical fertilizer fertilizer application of phosphorus, potassium, Nitrogen, phosphorus and potassium are used in combination with the three elements, with particular attention to the application of potash fertilizer in the middle and later stages. According to the principle of “one control, two promotions, three guarantees, and four taboosâ€, fertilization is divided into several stages. One control is to control fertilization during flowering to avoid falling flowers, fallen leaves, and falling fruit. The second is to apply fertilizer in time during young fruit and harvesting period. Promote the rapid expansion of young fruit; three guarantees is to ensure that the de-fertilizer, not leggy, free from fertilizer damage; four bogey is to avoid high concentrations of fertilizer, avoid wet soil top dressing, avoid high-temperature chase after the moon and avoid too concentrated dressing.
Organic Fertilizer Application: Apply about 3000 kilograms per acre.
NPK application: below 2000 kg per acre, 10 kg of N fertilizer per mu, 7 kg of P fertilizer, and 10 kg of K fertilizer; 2000- 2500 kg per acre, 9 kg of N fertilizer per mu, and 6.5 kg of phosphate fertilizer 9 kg of potash fertilizer; more than 2500 kg per acre yield, 8 kg of nitrogen fertilizer, 6 kg of phosphate fertilizer and 8 kg of potassium fertilizer.
Fertilization method: basal fertilizer, generally before transplanting high-quality soil fertilizer per acre or 3,000 tons of pig manure, while 100% of the phosphate fertilizer and 30% of nitrogen and potassium fertilizer as a deep application of basal. The application rate of seedling fertilizer is generally 50% of the total amount of nitrogen and potassium fertilizers. During this period, fertilizers should be top-dressed in stages and top-dressed once every 10 days to promote the growth of stems and leaves and increase the area of ​​assimilation. Hair-fertilizer, the application rate is generally 30% of the total amount of nitrogen and potassium fertilizer application, promote tuber enlargement and increase yield. Melon, eggplant, fruit, beans in the middle and late growth, spraying 0.2% potassium dihydrogen phosphate solution 2 to 3 times, has a good effect.
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