1. Fertilization with organic fertilizer orchards should not be blind, and soil testing and morphological diagnosis should be conducted before fertilization to determine the type and amount of fertilization. Organic manure includes ring dung, decomposed chicken manure and various animal manures. The organic content of cake fertilizer is high and it is a good organic fertilizer. It is required to apply 1.5-2 kilograms of organic fertilizer per kilogram of fruit, and to apply it once every 2-3 years, and generally apply 4000-5000 kilograms of Mushi. The fertilization time is preferably from late August to mid-September, and it can also be applied after harvest to defoliation. The fertilization method is generally a circular groove, an annular groove, or a radial groove between the rows. At the outer edge of the crown projection, a 50-60 cm deep, 40-50 cm wide annular groove is digged, organic fertilizer is applied, and the soil is backfilled. And irrigation can be, other methods can refer to this method.
2. The ratio of nitrogen, phosphorus and potassium in apple trees is normally 2:2:1 for the saplings and 1.5:1:2 for the results. The amount of fertilizer used to produce 100 pounds of apples requires 1 pound of pure nitrogen, and other elements are applied proportionally. Most apples currently used in the production of many brands of apple fertilizer are mostly apple formulas, if they are not, they should be suitable for the amount of nitrogen, phosphorus, potassium and apples themselves. In addition, calcium, zinc, iron and other trace elements should be added in combination with appropriate amounts of fertilization. The main fertilization period: 1 from bud to before flowering (March 25 to April 10), this period is dominated by nitrogen, and applied to 60-70% of the total nitrogen requirement in the year. 2 Before flower bud differentiation and fruit expansion (late May to early June), nitrogen should be applied to 20-30% during this period, while phosphorus and potassium are applied to 40-50% of the total amount of the year. 3 In the late fruit growth period (mid-September and mid-September), phosphorus and potassium are the main components in this period, and 50-60% of the total phosphorus and potassium are applied in combination with the application of organic fertilizer, and the total amount of nitrogen is about 10%. Fertilization method: dig 15-20 cm deep at the outer edge of the canopy and 3-5 shallow ditch lengths of 80-100 cm. Spread the fertilizer evenly into the ditch and mix it with the soil. Then cover the soil. The next time the top dressing is staggered from the previous one, irrigation will be performed immediately after fertilization.
3. The top-dressing topdressing fertilizer is foliar spray fertilizer, which has the advantages of quick fertilizer effect, no limitation of soil conditions, high fertilizer utilization rate, and can directly meet the needs of fruit trees, but can only be used as auxiliary fertilizer. The type of topdressing fertilizer is generally nitrogen, phosphorus, potassium, calcium, iron, zinc, boron, etc. It can generally be carried out 6-8 times in the whole year. Before fruit bagging (June 30th), nitrogen, calcium and boron are mainly used. After the main phosphorus, potassium, iron, zinc, etc., is generally 0.3% of urea, phosphoric acid diamine, borax, ferrous sulfate, zinc sulfate, 500-600 times the amino acid compound fertilizer and so on.
Personal protection is particularly important at the moment when the new crown epidemic is rampaging around the world. Our company produces ordinary respirators, medical masks, Protective Clothing, goggles, surgical gowns, disinfectant hand washing gels and other products, which are suitable for daily protection. Welcome to consult and purchase.
Personal protection,face mask,surgical gown,protctive goggles,protective clothing
Shanghai Rocatti Biotechnology Co.,Ltd , https://www.ljdmedicals.com