First, the role of potassium dihydrogen phosphate.
Improve the stress resistance of crops: Potassium dihydrogen phosphate can improve the stress resistance of crops (drought resistance, dry hot wind resistance, waterlogging resistance, frost resistance, injury resistance, healing promotion, disease resistance, etc.). ) By increasing the robustness of crops.
Protecting and strengthening the fruit: Potassium dihydrogen phosphate can protect and strengthen the fruit during the fruit expansion period, at the same time, it can also promote the fruit expansion, increase the fruit coloring and improve the fruit quality.
Promote the growth of crop root system: using potassium dihydrogen phosphate before and after flowering can promote the differentiation of flower buds, increase the number of flowers, protect flowers and fruits, improve the fruit setting rate, promote the growth and development of crop root system and advance the maturity time of crops.
2, the use of potassium dihydrogen phosphate.
Fruit trees: spraying 500-800 times of potassium dihydrogen phosphate on the leaves every 10- 15 days, young fruit stage and fruit expansion stage before and after flowering.
Vegetables: spraying potassium dihydrogen phosphate 300-500 times every 10 day at seedling stage, before flowering, after flowering and at fruiting stage.
Cash crops such as cotton: in seedling stage, budding stage, flowering stage and boll-setting stage, potassium dihydrogen phosphate is sprayed on the leaves every 7 days or so for 300-500 times.
3. Matters needing attention of potassium dihydrogen phosphate.
Avoid high temperature: when using high concentration potassium dihydrogen phosphate, avoid high temperature period. Generally, high-concentration potassium dihydrogen phosphate cannot be used in high-temperature season, and it can be sprayed before 10 in the morning and after 4 pm.
Avoid alkaline fertilizers: Potassium dihydrogen phosphate can be mixed with most acidic and neutral fertilizers and pesticides, but it cannot be mixed with alkaline fertilizers and pesticides.
What flower is potassium dihydrogen phosphate suitable for?
Osmanthus fragrans: Osmanthus fragrans in most areas will enter the full bloom stage one after another from late August. Therefore, after entering autumn, potassium dihydrogen phosphate should be applied frequently to promote the development and growth of flower buds, so as to increase the flowering quantity of plants and make flowers more fragrant.
Camellia: After the buds appeared in July and August, the buds grew slowly due to the high temperature. After beginning of autumn, the temperature difference between day and night increased, and the buds began to expand rapidly. At this time, potassium dihydrogen phosphate should be applied to promote bud development. If the buds are not well developed, it will be difficult for flowers to bloom in winter and spring.
Clivia: After entering autumn, potassium dihydrogen phosphate should be applied to Clivia to promote the growth of flower buds. If phosphorus and potassium fertilizer are not applied, it will not bloom. Even if flowers bloom, the number of flowers is small, which is easy to catch arrows and reduces the ornamental value of plants.