Potassium dihydrogen phosphate is a widely used phosphorus-potassium compound fertilizer, which has an important impact on the growth and development of crops and the yield and quality. This article will introduce in detail the use of potassium dihydrogen phosphate on different crops, the amount and period of use, to help growers make better use of this fertilizer.
First, how to use.
Foliar spray: dissolve potassium dihydrogen phosphate in water, prepare a solution of appropriate concentration, and then spray evenly on crop leaves. This is the most commonly used method to quickly replenish the phosphorus and potassium needed by crops.
Root application: After dissolving potassium dihydrogen phosphate, it is applied to the soil around the roots of the crop through irrigation or drip irrigation systems to allow the crop roots to absorb nutrients.
Soil application: Potassium dihydrogen phosphate is mixed directly into the soil and used as a base fertilizer or top dressing.
Second, the dosage. The dosage of potassium dihydrogen phosphate should be adjusted according to factors such as crop type, growth stage, soil fertility, etc. In general, foliar sprays are applied at a concentration of 01%~0.3% with a root application rate of 30 100 kg per hectare. For specific dosages, please refer to the product manual or consult professional agricultural technicians.
3. Period of use.
Seedling stage: At the seedling stage, the appropriate application of potassium dihydrogen phosphate can promote root development and enhance the stress resistance of plants.
Vigorous growth period: During this period, crops have a greater demand for phosphorus and potassium elements, and the application of potassium dihydrogen phosphate can improve photosynthesis, promote flower bud differentiation and fruit expansion.
Flowering and fruiting stage: The application of potassium dihydrogen phosphate can increase the fruit setting rate, improve fruit quality and increase yield.
Stress period: Under adversity conditions such as drought, cold, pests and diseases, the application of potassium dihydrogen phosphate can enhance the stress resistance of crops and reduce losses.
Fourth, the specific application of different crops.
Grain crops: such as rice, wheat, corn, etc., spraying or root application at the tillering stage, jointing stage, and grain filling stage can increase the number of grains per ear and the weight of 1000 grains.
Vegetable crops: such as tomatoes, cucumbers, eggplants, etc., spraying or root application at the seedling, flowering, and fruiting stages can improve yield and quality.
Fruit tree crops: such as apples, citrus, bananas, etc., spraying or root application during the flower bud differentiation stage, fruit expansion stage, can promote fruit coloring and improve sweetness.
Flower crops: Spraying or root application during the growing season can enhance the color and ornamental value of flowers.
Cash crops: such as cotton, rapeseed, soybean, etc., spraying or root application at the seedling stage, budding stage, flowering stage, can improve yield and quality.
5. Precautions.
Agronomy easy to point through potassium dihydrogen phosphate should be avoided mixed with strong acid and strong alkali fertilizers, so as to avoid chemical reactions affecting fertilizer efficiency.
Spraying should be carried out in the morning or evening when there is no wind, and avoid spraying in the hot and scorching sun to avoid burning the leaves.
Root application should be used in combination with nitrogen fertilizer and potassium fertilizer to ensure the balance of crop nutrients.
When storing, it should be protected from moisture, sun and avoid contact with other chemicals.
In short, the rational use of potassium dihydrogen phosphate can significantly improve the yield and quality of crops, but in the process of use, it is necessary to pay attention to the selection of methods, dosages and periods, and carry out scientific fertilization in combination with the actual situation. At the same time, attention should also be paid to the quality and safety of fertilizers to ensure the sustainable development of agricultural production.