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, not from fertilizer damage; four bogey is to avoid high-concentration fertilizer, avoid wet soil top dressing, avoid high-temperature dressing and avoid too concentrated dressing.
Organic Fertilizer Application: Apply about 3000 kilograms per acre.
Application of N, P and K: the yield per acre is above 2500 kg, 10 kg for nitrogen fertilizer, 7 kg for phosphate fertilizer and 10 kg for potash fertilizer; the yield level per acre is between 2000 and 2500 kg, 9 kg for nitrogen fertilizer, and 6.5 kg phosphate fertilizer. Potash 9 kg; below 2000 kg per acre yield, 8 kg of nitrogen fertilizer applied Mushi, 6 kg of phosphate fertilizer, potash 8 kg.
Fertilization method: basal fertilizer, usually before transplanting high quality soil miscellaneous fertilizer or pig, cow manure 3000 kg, while 100% of the phosphate fertilizer and 30% of nitrogen and potassium fertilizer as a deep application of base fertilizer. The application rate of seedling fertilizer is generally 50% of the total amount of nitrogen and potassium fertilizers. During this period, topdressing should be performed in stages, topdressing once every 10 days or so to promote the growth of stems and leaves. 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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