What are the effects of potash fertilizer?

Potassium is one of the three elements of fertilizer, and potassium in plants generally accounts for 0.2%-4.1% of dry matter, second only to nitrogen. In the process of plant growth and development, potassium is involved in the activation of more than 60 enzyme systems, photosynthesis, transport of assimilates, carbohydrate metabolism and protein synthesis.

The main function of potash fertilizer

The application of potassium fertilizer can promote crop photosynthesis, promote crop fruit and improve crop cold resistance and disease resistance, thus increasing agricultural yield. Potassium exists in the form of free potassium ions in plants, which can promote the metabolism of carbohydrates and nitrogen, control and regulate the activity of various mineral nutrient elements, activate the activities of various enzymes, control the transport of nutrients and water, and maintain the internal pressure of cells. to prevent plant wilt.

1. Promoting the activation of enzymes is one of the most important functions of potassium in the process of plant growth. Potassium has been found to be the activator of more than 60 kinds of enzymes. therefore. Potassium is closely related to many metabolic processes in plants, such as photosynthesis, respiration and the synthesis of carbohydrates, fats and proteins.

2. Promote photosynthesis and transport of photosynthate.

① increased photosynthetic efficiency.

② regulates the opening and closing of stomata and controls the entry and exit of CO and water.

③ promotes the synthesis of carbohydrates and accelerates the flow of photosynthetic products.

3. Promote protein synthesis.

① promotes the uptake and transport of NO protein, a key component of protein synthesis.

② is closely related to protein synthesis.

4. enhance the stress resistance of plants, potassium can reduce soluble amino acids and monosaccharides, increase cellulose and thicken cell wall, and the accumulation of osmotic pressure gradient of potassium in crop roots can enhance water absorption. potassium can close the stomata of crop leaves to prevent water loss. Therefore, potassium can enhance the disease resistance, cold resistance, drought resistance, lodging resistance and salt resistance of crops.

5. Improve the quality of crop products, increase the protein content of food crops, crude fat and palmitic acid content of oil crops, starch and sugar content of potato and sugar crops, increase the fiber length, strength and fineness of fiber crops and cotton, adjust the sugar-acid ratio of fruits, increase their vitamin C content, improve the shape, size, color and flavor of fruits and vegetables, and enhance their storability.

The harm of excessive application of potash fertilizer

1. Excessive potassium application will not only waste valuable resources, but also reduce the absorption of calcium, magnesium and other cations by crops, resulting in "rotten heart disease" of leafy vegetables, "bitter pimples" of apples, and so on.

2. Excessive application of potassium fertilizer will cause soil environmental pollution and water pollution.

3. Excessive application of potassium fertilizer will weaken the production capacity of crops.