From late February to early March, 0.5%-1% urea sprayed trees to apply nitrogen(black plastic nursery pots). In the first half of May, every 10 days, the specific application of nitrogen fertilizer, appropriate application of phosphorus and potassium fertilizer, before flowering, even spray 2-3 times 0.3% boric acid, plus 0.3% of urea solution, each plant applied 3g borax(7.88inch plastic plant pots). Once a month from July to August, apply 150-200g/seed compound fertilizer each time.
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The fertilization of papaya should be combined with the work of drainage and irrigation(cell trays). In the half-month after the flowering and the rapid growth period of the spring shoot, the water holding capacity in the field should be maintained at 60%-80%. And spray 250-300g urea solution once(9.06inch plastic plant pots). After the planting of Banlangen (spring sowing in early April, summer sowing in late May), late May to early June is the first period of vigorous growth after the planting of Banlangen.(plastic plant growing pots wholesale supplier)
The specific method is: from late May to early June(1 gallon nursery pots bulk), the use of ammonium sulfate 7-8 kg, phosphate fertilizer 8 ~ 15 kg, potassium fertilizer 3 ~ 5 kg, the above fertilizers are mixed and evenly sprinkled into the Banlangen line (the fertilizer distance of the application) The roots of the plants must be 5 to 10 cm to avoid burning the roots of the radix. During this period, it is necessary to scientifically and rationally manage the fertilizer and water(2.5inch square nursery pots). During the period, the demand for NPK elemental fertilizer is enhanced.
It is applied every 10-15 days in June, mainly based on nitrogen fertilizer(wholesale nursery pots), and appropriate application of phosphorus and potassium fertilizer, about 100g per plant. In the middle and late October, apply 50-100g compound fertilizer and spray 30-50g urea solution. In order to provide sufficient fertilizer for the growth of Banlangen plants(3.5inch square nursery pots), 40 to 50 kilograms of cake fertilizer per acre (or 400 to 500 kilograms of decomposed human excrement) can be applied.(plastic plant growing pots wholesale supplier)
Selection and use of trace element fertilizers(plastic nursery pots). The method is as follows: the use of foliar micro-fertilizer potassium dihydrogen phosphate 150-200 g, or zinc sulfate 200-250 g, or Song Gang green St. 50 g, or Tian Run foliar fertilizer 200 g, or Lufenwei brand foliar 50 grams of fertilizer (the above-mentioned leaf surface micro-fertilizer can be selected as one), adding water 50-75 kg(4.5inch square nursery pots), the seedling height is about 10 cm after sowing in Banlangen, and the first orientation uniform spraying is applied to the Banlangen plant body.
Therefore, after harvesting the leaves every time in late June and mid-August(7.48inch plastic plant pots), you can spray the micro-fertilizer separately according to the above method (if sprayed, it should be re-sprayed after spraying), you can provide iron and copper for the growth of Banlangen(4.5inch deep square pots). More than ten kinds of chemical trace elements such as magnesium, zinc and manganese can promote the robust development of the plant of Banlangen, enhance photosynthesis, improve the resistance to stress, and increase production and income.
(plastic plant growing pots wholesale supplier)The specific method of soil fertilization is as follows: In the first ten days of July, when the first leaves are harvested(plug trays), the tops are harvested according to the above method, which can provide sufficient growth for Banlangen. Nitrogen, phosphorus and potassium. When the Banlangen plant is applied with a large amount of elemental fertilizer as described above(2 gallon nursery pots bulk), the effect is better if the foliar plant growth agent (micronutrient fertilizer) is applied in combination.