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[Chemical Knowledge]：What is the role of potassium?

Read： 420 Time：20months ago Source：Transform the World with Simplicity

Plants need a variety of elements to maintain their growth and development. Among them, potassium is one of the most needed elements for plants. Potassium can not only improve the resistance of plants, but also increase the yield and quality of plants. In the absence of potassium, plants become weak and susceptible to pests and diseases, affecting yield and quality. Therefore, it is of great significance to strengthen the supply of soil potassium and improve its utilization rate in agricultural production.

1. the role of potassium

potassium is one of the most abundant elements in plants, which is involved in many important physiological and biochemical processes of plants. Potassium can regulate the osmotic pressure of plant cells and maintain intracellular water balance. Potassium can enhance the photosynthesis of plants, improve the utilization rate of light energy, promote the synthesis and accumulation of photosynthetic products, and improve the transport and utilization efficiency of photosynthetic products. In addition, potassium can also promote the respiration of plants, promote the absorption and transportation of nutrients in plants, and improve the resistance of plants to stress. Finally, potassium can also improve the sweetness, aroma and color of fruits, and improve the quality of vegetables.

2. soil potassium supply and utilization

make full use of soil potassium is an important way to improve crop yield and quality. Therefore, understanding the supply and utilization of soil potassium is the key to improve yield and quality. The supply and utilization of soil potassium has the following problems:

1. Lack of potassium content in soil

Lack of potassium content in soil is a common phenomenon, especially in the use of high-yield, high-fertilizer agricultural production model. Insufficient potassium content in soil will affect the absorption and utilization efficiency of other nutrients such as nitrogen, phosphorus and calcium, thus affecting the growth and development of crops. Therefore, the application of potassium fertilizer in soil is an effective way to improve the content of potassium in soil.

2. There are many forms of potassium in soil. There are many forms of potassium in

soil, including organic phosphorus potassium, reversible potassium, difficult potassium and crystalline potassium. These different forms of potassium have different adsorption and exchange, so the supply effect on plants is also different. Among them, the potassium element contained in organic phosphorus potassium has high effectiveness, but it is difficult to release it in a short period of time; the potassium element contained in reversible potassium is high, but it will be lost under the influence of soil erosion and leaching; the potassium element contained in difficult potassium accumulates in the soil for a long time, and the supply effect is relatively stable; the potassium element contained in crystalline potassium has a low supply effect, however, due to the better location in the soil, it is more common.

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