What is nitrophosphate fertilizer? How do I use it?

What is nitrophosphate? How to use it well? Please give an introduction Nitrophosphate is processed from natural phosphate rock. Trace elements and rare earth nitrate in phosphate rock are activated in production to form nitrate that can be absorbed by crops. The use of nitrophosphate fertilizer can make trace elements in the soil get a certain supplement. It can also significantly improve the quality of agricultural products. After nitrophosphate is used, the horizontal extension distance of nutrients is 10-30 cm, and the vertical infiltration distance is not more than 60 cm, which will not cause nutrient loss. Characteristics of nitrophosphate: 1, nitrophosphate fertilizer to fast: crops to absorb nitrate nitrogen (NO3)-based. Urea [(NH2) 2CO] is applied to the soil in the form of amide nitrogen. If it is to be absorbed and utilized by crops, it can only be converted into ammonium nitrogen under the action of urinary enzymes, and then nitrified by microorganisms in the soil to generate nitrite. Finally, it is oxidized into nitrate nitrogen and absorbed by crops. This is obviously incomparable to topdressing in spring and summer. 2, nitrophosphate fertilizer utilization rate is high: ammonium nitrogen in the process of conversion to nitrate nitrogen that crops can absorb (nitrification), may become ammonia and make part of the nitrogen disappear in the air. 3, nitrophosphate non-resistance: calcium in many crop growth process demand is only less than nitrogen, potassium, and ammonium nitrogen (NH4) on calcium absorption has a resistance effect. Nitrophosphate is not only suitable for wheat, corn, rice and other grain crops, but also suitable for rape, tea, cotton, garlic, banana, litchi, apple, watermelon, grape, citrus, tobacco, potato, sugar cane, tea, cabbage, pepper, lettuce, fruit trees and other cash crops. Nitrophosphate application method: Wheat: low-yield fields in hilly areas, one-time bottom application method, 30-35 kg per mu, Sichuan plateau medium and high fertility areas, the technology of nitrogen transfer should be promoted, the ratio of bottom dressing is 6:4, the amount of base fertilizer per mu is 25-30 kg, wheat jointing stage mu dressing 15-25 kg. Corn: focus on applying seedling fertilizer, stem fertilizer and ear fertilizer. Adopt the method of "light before and heavy after". At 5-6 leaf stage after maize emergence, nitrophosphate fertilizer is applied about 5kg per mu as seedling fertilizer, 20kg combined with soil cultivation at jointing stage, 25kg at large bell stage and 10kg per mu before tasseling. Fruit tree fertilization: 1. On the basis of applying enough organic fertilizer, apple trees were applied with 1.5 kg of phosphorus and potassium nitrate in September, and nitrophosphate fertilizer was applied with 1 kg of nitrophosphate fertilizer in flower bud differentiation period. Radial furrow application was adopted. Stripe application was adopted for small crown dense planting garden, and whole garden application was adopted for roots spread all over the garden. Pear trees are similar to apples. 3. Grape: topdressing 2-3 times per mu every year, with a total of 60-80 kg of phosphorus and potassium nitrate. The first topdressing is carried out in early spring when flower buds begin to expand. Mu Shi 20 kg, the second time in the early stage of young fruit expansion after flowering. Apply 20- 30kg per mu, the third time in the early stage of fruit coloring, apply 20- 30kg per mu. Nitrophosphate fertilizer recommendations: 1, suitable for all kinds of soil and crops, mainly for topdressing application, can also be used as base fertilizer. 2, ordinary field crops are generally used as base fertilizer application; cash crops do topdressing, and try to use a small number of times in each growth period to improve fertilizer utilization. 3. When applying, it should be applied deeply, base fertilizer should be applied deeply, topdressing should be applied in furrows or holes, and direct contact with seeds or roots should be avoided. 4. Irrigation should not be carried out immediately after application to avoid leaching nutrients to deep layers and reduce fertilizer efficiency. 5, fertilizer application: field crops 30~50 kg/mu, cash crops: 40~70 kg/mu. When making seed fertilizer, generally apply 5-8 kg per mu, and avoid direct contact with seeds, generally about 5 cm away from seeds. What is calcium-magnesium phosphate fertilizer?