It varies from season to season, with 25% in summer and 12.5% ​​in winter . Various fertilizers of nitrate nitrogen and ammonium nitrogen can be used, but it is not suitable to use urea, especially on clay ground, because urea will raise the pH of the soil .
The fertilization of the rose is divided into two types: root fertilization and root fertilization. When the whole hoe is used, the base fertilizer is applied, and the fertilizer can be applied less or not in the early stage. The ratio of nitrogen : phosphorus : potassium used in the rose is 1:1:2 or 1:1:3 . Fertilization should master the principle of thin fertilizer . The concentration of top dressing outside the root does not exceed 0.3% . Fertilization to be noted that the following cases: after fertilization flower, flowering ensure that the next required nutrients; more phosphorus, potassium after autumn, less nitrogen fertilizer; fertilizer to be applied before and after trimming; when foliage, spraying should be uniform, Be thoughtful, don't spray on rainy or cloudy days, preferably on a sunny, windless morning.
Commonly used fertilizers formulations are: urea 1kg, superphosphate 2kg, potassium promptly administered after mixing 2kg, per 40g. 1.1kg or urea, superphosphate 3.17 kg, 3.17 kg potassium sulfate, magnesium sulfate 0.45kg mix used immediately, should not go far, per dosage 28g.
Fertilization time and method : Fertilization is usually carried out several days after irrigation, when the soil is not too dry and not too wet, and the fertilizer is evenly spread around the plants 20 to 25 cm away from the stem . If the plant density is large, it can be applied, that is, spread between the rows of plants, then shallowly ploughing the soil, and irrigation to help the fertilizer dissolve and penetrate.
Supplemental fertilizers often precede the flowering of the buds to promote sprouting of the plants. Or in the early spring, when the soil temperature is low, the microbial activity is poor, and the organic fertilizer is released slowly, the flower buds are formed early in the spring. It is also applied after pruning or when the plant is deficient.
Fertilizer can also be dissolved in water to become liquid fertilizer application, but it is necessary to pay attention to the application concentration. The ratio of total fertilizer to water is preferably one thousandth or two thousandths. Excessive concentration can easily damage the root system and cause adverse consequences.
Foliar fertilization: Foliar fertilization is an auxiliary measure for fertilizer and cannot completely replace soil fertilization. Because foliar fertilization uses less fertilizer and has a quick effect, the fertilizer enters the sap flow in a few hours of use, which is especially suitable for the targeted application when the moon lacks certain elements, so it has been accepted by most producers.
Fertilizer mix: can be mixed according to the needs of the rose, or can be used alone. The most commonly used combinations are: urea 1.25g , potassium dihydrogen phosphate 1.25g , water, a complete fertilizer that constitutes NPK, the concentration is 2.5 thousand . Another formula is: urea 112.7g , potassium sulfate 112.7g , sulfuric acid Magnesium 56.3g , iron sulfate 28.2g , water 284.3L , the concentration is 1.25 parts per thousand . Formulation for correcting trace element deficiency: 15 g of manganese sulfate, 20 g of magnesium sulfate , 10 g of chelated iron , 5 g of boric acid , 25 L of water , and the concentration is two thousandths.
Foliar fertilization time and method: The concentration of the solution should be controlled at about two thousandths. The concentration is high and it is easy to damage the leaves; when the leaves are too tender, do not apply because it has no ability to absorb nutrients. Both sides of the leaves should be thoroughly soaked; it should not be sprayed before and after rain; sprayed in the morning without strong wind; it should not be sprayed on high temperature and sunny days; sprayed with spray nozzles; urea can be mixed with certain anti-fungal agents, other fertilizers It can also be mixed with pest control agents. Improved potency as foliar fertilizer, fertilizer may be added in the development of the liquid spraying agent, and if not, the available neutral soap or detergent, an appropriate amount of added fat mixture was stirred after the foam spraying.
Spray when the leaves are deficient in symptoms, spray once every 7 to 10 days, and spray until the symptoms of lack of fat disappear.
The general principle of the fertilization cycle of the rose: before the cultivation of the rose, a large amount of organic fertilizer is applied, and the amount of phosphate fertilizer is added; in the early stage of the planting of the rose, the amount of urea is applied to promote the early hair; the period after the pruning and the active growth of the rose is often topdressed.
Single Hole Deck-Mount Basin Faucets
We are a professional bathroom faucet manufacturer from Wenzhou, Zhejiang, China.
Specializing in the production of brass faucets,Basin Mixer Tap,Bathroom Faucet,Bath & Shower Faucet,Kitchen Mixer Tap,Kitchen Faucet
Single Hole Deck-Mount Basin Faucets product category:Brass single hole basin faucet, gold single hole basin faucet, chrome single hole basin faucet, black single hole basin faucet, gun gray single hole basin faucet
We have perfect pre-sales and after-sales service and technical support. Looking forward to your cooperation!
Brass single hole basin faucet, gold single hole basin faucet, chrome single hole basin faucet, black single hole basin faucet, gun gray single hole basin faucet
Wenzhou Honglian Sanitary ware Co.,Ltd , https://www.hl-faucet.com