First, the existing problems and principles of fertilization For diazonium phosphate fertilizer light potassium fertilizer, NPK imbalance, unreasonable fertilization period, the obvious lack of organic fertilizer application, the importance of the application of trace element fertilizer is not enough and other issues, put forward the following principles of fertilization:
1. Optimize the amount of nitrogen, phosphorus, and potassium fertilizers based on soil fertility conditions and target yield, pay special attention to adjusting nitrogen and phosphate fertilizers, and increasing potassium fertilizers;
2. The northern calcareous soil has low content of effective manganese, zinc, boron, aluminum and other trace elements, and attention should be paid to the supplementation of these trace elements;
3. Rational application of organic fertilizers has a significant effect on improving the yield and quality of radish. Avoid using organic fertilizers that have not been fully decomposed to farmland, and promote the use of decomposed manure or commodity organic fertilizers;
4. The application of fertilizers should be combined with high-yield and high-quality cultivation techniques, especially with drought-resistant water-saving and drainage management measures.
Second, radish fertilizer recommendations
1. The target output is about 4500 kg/mu, apply 2-3 ounces of organic fertilizer per mu or human urine, 2000-3000 kg of biogas slurry, nitrogen fertilizer (N) 12-14 kg/mu, phosphate fertilizer (P2O5) 5-7 Kilograms per mu, potash (K20) 12-14 kg/mu;
2. The target output is about 3,000 kg/mu, apply organic fertilizer 1-2 square/mu, nitrogen fertilizer (N) 8-10 kg/mu, phosphate fertilizer (P205) 4-6 kg/mu, potassium fertilizer (K20) 10-12 kg /mu;
3. The target output is 1500 kg/mu, organic fertilizer 0.5-1 square/mu, nitrogen fertilizer (N) 6-8 kg/mu, phosphate fertilizer (P205) 3-5 kg/mu, and potassium fertilizer (K20) 8-10 kg. /mu.
All solid organic fertilizers are used as base fertilizer, 100% solid organic fertilizer is used as base fertilizer, and human waste and biogas slurry are used as top-dressing for small amount of multiple application; 40% of the total amount of nitrogen fertilizer is used as base fertilizer, and 60% is in the early stage of rosette and fleshy root growth. 2 times for top dressing; Phosphorus and potassium fertilizers were all used as base fertilizers, or 2/3 potash fertilizer was used as base fertilizer, and 1/3 was applied at the early stage of fleshy root growth. If the basal fertilizer is not applied with organic fertilizer, it may be appropriate to increase nitrogen fertilizer 3-5 kg/mu and potassium fertilizer 2-3 kg/mu.
For fields lacking trace elements such as boron, or in fields where boron deficiency symptoms have been exhibited in previous years, one kilogram of borax per acre can be applied before sowing, or 0.1%-0.5% of borax or boric acid can be used during the middle and late stages of radish growth. Aqueous solution was sprayed on the leaves, sprayed once every 5.6 days, and sprayed 2-3 times.
Mini Rice Harvester,Rice Harvester Price,Paddy Harvesting Machine,Mini Rice Harvesting Machine
Henan Qianli Machinery Co.,Ltd. , https://www.chalionagri.com