I. What is potassium dihydrogen phosphate fertilizer
Potassium dihydrogen phosphate is a high-concentration high-quality chlorine-free phosphorus-potassium compound fertilizer, which contains both phosphorus and potassium These two elements play a key role in plant growth, flowering and fruiting, and are widely used in almost all types of crops such as various types of cash crops, grains, fruits, vegetables, etc. They are called “universal fertilizers” in the horticultural industry. It is used very frequently in flower farming.
Second, the role of potassium dihydrogen phosphate
Potassium dihydrogen phosphate contains about 52% of phosphorus pentoxide and about 34% of potassium oxide. It has many excellent effects such as significantly increasing production and income, improving quantity and optimizing quality, resisting lodging, resisting diseases and insect pests, and preventing premature aging, and has the effect of overcoming nutrient deficiencies caused by the decline of root aging and absorption capacity at the later stage of crop growth.
Third, how to use potassium dihydrogen phosphate
As a potassium fertilizer, there are two main ways of using potassium dihydrogen phosphate:
1. Spraying
According to the proportion requirements on the package instructions, dilute potassium dihydrogen phosphate with 800-1000 times of water, and then spray it on the leaves at intervals Spray once every ten days, and use it three or five times in a row.
2. Root irrigation
Potassium dihydrogen phosphate also has a fertilization method called root irrigation, which is to directly irrigate the diluted potassium dihydrogen phosphate on the soil. surface.
4. Precautions for the use of potassium dihydrogen phosphate
1. The concentration should be well controlled
The concentration of potassium dihydrogen phosphate should be well prepared and not too high. The general concentration should not exceed 1:500, and the commonly used ratio is 1:1000. If there are instructions for use, you can add water according to the ratio on the manual. Many novice friends will mistakenly think that the higher the concentration of fertilizer, the better the growth effect of plants, and every time they will put more fertilizer to increase the concentration. The root burning phenomenon of plants can even directly burn the plants in severe cases.
2. Selection of fertilization time
Potassium dihydrogen phosphate contains phosphorus and potassium, and its main function is to induce flowers, so most of them are in the flowering period use. It should not be used as a common fertilizer at ordinary times, after all, its nutrients are not comprehensive, and the price is also expensive.
When you see flower buds, you can spray potassium dihydrogen phosphate to promote flower bud differentiation. When fertilizing, spray the front and back of the leaves. Stop fertilizing after flowering.
Also, avoid heat and rain when fertilizing. When the temperature is high, the water evaporates too quickly, the concentration will increase, and it is easy to cause fertilizer damage; while in rainy days, the fertilizer will be washed away and wasted.
3. Mixed use taboo
Potassium dihydrogen phosphate can be mixed with some nitrogen fertilizers and pesticides, which can not only improve fertilizer efficiency, but also save time and energy. manpower. However, since potassium dihydrogen phosphate is slightly acidic, it cannot be mixed with alkaline products, such as Bordeaux mixture, copper hydroxide, potassium hydroxide, etc.; it cannot be mixed with carbonate-containing products (such as potassium carbonate and sodium bicarbonate, etc.); There are also ferrous sulfate, manganese zinc, copper sulfate, zinc sulfate, metalaxyl manganese zinc and other products can not be mixed with potassium dihydrogen phosphate.
The above is the function and usage of potassium dihydrogen phosphate and precautions, I hope it can help everyone.
