One of the reasons why foliar potassium fertilizer spraying has been neglected is that people always think that there is no need to do more when potassium fertilizer or potassium-containing compound fertilizer has been applied in the soil. In fact, the use of potassium formate foliar fertilizer in the middle and later stages of crop growth compensated for the decline of fertilizer absorption capacity caused by root aging, as well as the loss or solidification of potassium fertilizer caused by changes in soil acidity and alkalinity and other reasons.

Because potassium formate can dissolve rapidly and evenly in water, is clear and transparent, does not contain impurities, has high utilization rate, fast fertilizer efficiency and long-lasting fertilizer effect. It is suitable for foliar spraying, irrigation along water, automatic irrigation system, soilless nutrient cultivation and so on. Potassium formate as foliar fertilizer has been recognized by the industry.

High quality potassium formate water-soluble fertilizer has several characteristics:

First, there is no precipitate in the liquid after dissolving water.

Secondly, potassium formate must dissolve rapidly in water.

Thirdly, the heavy metals in potassium formate, a water-soluble fertilizer, should not exceed the standard.

Potassium formate is used as water-soluble and high-potassium water-soluble fertilizer. Its solubility is very high. It dissolves 337g at 20°C in 100g water and 313g at 10°C in 100g water.

Potassium can slow down senescence, improve photosynthesis, promote nitrogen absorption, make crops mature early, increase sugar and water content of fruits, and enhance disease resistance and drought resistance. Furthermore, the yield, quality and commerciality of fruits were improved as a whole. So crops need to use potassium formate as foliar fertilizer.