1. Synergistic effect of humic acid on potassium fertilizer
Research on the synergistic effect of humic acid on potassium fertilizer has been rarely carried out in China. Studies have shown that the acidic functional groups of humic acid can absorb and store potassium ions. Reduce the amount of potassium lost with water in sandy soil and soil with strong leaching.
Humic acid can prevent the fixation of potassium by clay soil and increase the amount of exchangeable potassium. Some low molecular humic acid can dissolve potassium minerals. Slowly increase the release of potassium. Increase the content of available potassium in soil. Humic acid can also use its biological activity to stimulate and regulate the physiological metabolic process of crops. Increase potassium uptake by more than 30%.
2. Synergistic effect of humic acid on microfertilizer
Besides nitrogen, phosphorus, potassium and many other elements, the growth and development of crops also need iron, boron, manganese, molybdenum, zinc, copper and other trace elements. They are the components of various enzymes in crops. Which have an important impact on promoting the normal growth and development of crops. Improving disease resistance. Increasing yield and improving quality.
Most trace elements in the soil are in the ineffective state. Which is difficult for plants to absorb.Humic acid can chelate iron, zinc and other trace elements to form a chelate of humic acid trace elements with good solubility. Easy absorbed by plants. Conducive to the absorption of roots and leaves. Promote the movement of trace elements from roots to the ground.
The amount of ferric fulvate entering the plant from the root is 32% more than that of ferrous sulfate, and the amount moving in the leaves is twice as much as that of ferrous sulfate, which increases the chlorophyll content by 15%-45%, effectively solving the problem of yellow leaf disease caused by iron deficiency.The effect is similar to that of organic iron fertilisers used abroad, but at a much lower price.