The first is to choose the fertilizer. There are many types of fertilizers for fertilization. In addition to the qualified compound fertilizers, organic-inorganic compound fertilizers, biological fertilizers and foliar fertilizers on the market, there are also farmyard manure such as green manure, human and animal manure. When processing farmyard manure, especially human and animal excrement, it must be fermented at a high temperature of 50 ° C or higher for more than 7 days. In addition, the residue after the production of biogas is also a good fertilizer. When selecting or purchasing commercial fertilizers, you should master the principle of combining organic fertilizers with inorganic fertilizers. For example, Haiyan organic-inorganic compound fertilizer, which contains a variety of nutrients, is widely reflected in many citrus producing areas in Hunan. Hollow Sphere,Butt Welded Ball Valve,Full Welded Ball Valve,Stainless Steel Hollow Sphere Antong Valve Co.,Ltd , https://www.atvalveball.com
Citrus standardized fertilization technology
The second is to pay attention to the fertilization method. Soil fertilization mainly adopts methods such as strip ditch application and ground application. Ditch the trench (hole) at the canopy drip, 20 to 40 cm deep. Fertilize the position of the symmetrical rotation. The instant chemical fertilizer should be applied in shallow ditch (cavity), and the citrus garden with spray and drip irrigation facilities can be used for liquid fertilization. When using organic fertilizer to change soil, it is best to dig deep trenches outside the drip line. The foliar topdressing time is mainly in the flowering and fruiting period, the fruit development period and the harvesting. It is best to use organic nutrients such as amino acids and nucleotides. In the high temperature and dry period, the concentration should be reduced, and the foliar topdressing should be stopped within 20 days before fruit harvesting. The young trees are fertilized, and the thin application is applied diligently. The nitrogen fertilizer is mainly used, and phosphorus and potassium fertilizers are applied together. Spring, summer and autumn shoots are fertilized 4 to 6 times. The application of quick-acting nitrogen fertilizer should be stopped after August. The ratio of nitrogen, phosphorus and potassium is preferably 1:(0.25-0.3):0.5. The amount of fertilizer applied should increase from less to more year by year. It should be applied to the periphery of the saplings of the saplings with the thin, dung water after decomposing, to avoid direct contact with the roots. Formulated fertilizers for saplings can also be used. The results of tree fertilization, nitrogen, phosphorus, potassium ratio of 1: (0.5 ~ 0.7): (0.7 ~ 1.0) is appropriate. What should be added to the trace element fertilizer? Adult trees are applied 2 to 3 times a year, with emphasis on strong fruit fertilizer and fruit harvesting. Before the germination, the visible tree potential and the application of winter fertilizer last year, the amount of fertilizer. The strong fruit fertilizer is mainly composed of nitrogen and potassium. Combined with the application of phosphate fertilizer, it is best to apply compound or compound multi-element formula fertilizer to ensure the nutrient balance supply and flavor formation of citrus in the strong fruit period. The application of fruit fertilizer should be timely, so that nutrients can be absorbed as soon as possible, restore the tree potential, increase storage nutrition, and lay a good foundation for the growth results of the next year.
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