What is the effect of monopotassium phosphate on orchids? Detailed explanation of how to use it

Monopotassium phosphate is a quick-acting binary compound fertilizer of phosphorus and potassium, and also an important growth regulator. It is now widely used in orchid cultivation. To apply monopotassium phosphate correctly and reasonably, the following points should be noted:

I. Main effects of monopotassium phosphate

1. Chlorine-free, low salt index, soluble in water. Rich in phosphorus and potassium nutrients, safe and non-toxic.

2. It can buffer changes in soil acidity and alkalinity and stabilize the pH value of the soil. It can promote the growth and reproduction of microbial flora in the rhizosphere of flowers. It can improve the soil, making flower roots well developed, leaves thick and dark green, stems sturdy, and disease resistance and stress resistance enhanced.

3. When used for foliar spraying, the absorption and utilization rate is as high as 80%-90%. It can regulate flower growth and supplement nutrients at critical moments.

4. The dosage is small, and the effect is obvious. The potassium ions and phosphate ions in monopotassium phosphate can be directly absorbed and utilized by flower plants, with fast and obvious results.

II. Determine the correct application method

At present, it is mostly used for fertilization outside the roots, generally at a concentration of 0.05%-0.1% during the seedling stage and up to 0.2%-0.3% in the middle and late stages, for foliar spraying. During the growing period, frequently spraying the leaves with a 0.2%-0.3% monopotassium phosphate solution can make the branches sturdy and the leaves lush, with many flowers and bright colors. Spraying a 0.3% monopotassium phosphate solution 2 to 3 times during the bud stage can make the flowers large and numerous, with brilliant colors.

During the flower bud differentiation period, using monopotassium phosphate for foliar spraying can promote flower bud differentiation and produce more flowers. The commonly used concentration is 0.1%-0.2%, that is, weigh 1-2 grams of monopotassium phosphate and then add water to 1 kg (about 1 liter), and spray the leaves with a small sprayer in the early morning or evening.

As for the best spraying site, regarding the absorption of monopotassium phosphate, young leaves are stronger than old leaves, and the back of the leaf is stronger than the front. In addition, young shoots can also absorb it.