Can crops get high yield only by applying potash fertilizer again? How to use it reasonably?

In terms of fertilizer, there is no saying that which kind of fertilizer is good and which kind of fertilizer is bad, but in fertilizer, potash fertilizer is indeed a relatively special existence, so can crops re-apply potash fertilizer to achieve high yield? How to use it reasonably?

What is the function of potash fertilizer? Can you increase the output?

1. Improve stress resistance

Potassium participates in many physiological activities in the process of plant growth, 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.

2. Improve the quality

The application of potassium fertilizer can improve the stress resistance of crops and play a very important role in ensuring the high and stable yield of crops. For example, corn, through the application of potassium fertilizer, can improve the quality of corn stalk and prevent lodging.

3. Increase the output

Due to the high content of potassium in the original soil in some areas, many farmers are not aware of the important effect of potassium on yield.

Second, how to apply potash fertilizer reasonably?

1. Types of common potash fertilizers

(1) potassium sulfate

White or yellowish crystal, soluble in water, low hygroscopicity. It can be used as base fertilizer or topdressing fertilizer, which is suitable for all kinds of crops, especially those that avoid chlorine and like potassium.

(2) potassium nitrate

White powder or crystal, soluble in water, low hygroscopicity.

(3) potassium dihydrogen phosphate

Colorless to white crystalline or crystalline powder, soluble in water, stable in air. At present, it is mainly used for seed soaking and extra-root topdressing.

(4) Biological potash fertilizer

It can be used for seed dressing, dipping in the root, or applied to the soil. In fact, the application of bacterial agent is to inoculate the crop roots, allowing silicate bacteria to release potassium, phosphorus, silicon, iron and other elements in the soil around the roots for root absorption and utilization.

2. Under what circumstances should potash be applied?

(1) look at the soil

The content of potassium in the soil of our country is slowly decreasing. In addition, an appropriate amount of potassium fertilizer should be applied to the soil in the north.

(2) look at crops

As potassium plays an important role in improving the content of protein and sugar in crops, it is recommended to apply potassium fertilizer in general cash crops, especially legume crops, potato crops, cotton and hemp, tobacco and fruit trees.

(3) look at the external nutrient input.

Straw returning to the field has been advocated in recent years, because the content of potassium in straw is high and easy to release, which can supply a lot of potassium to the soil.

3. Matters needing attention in applying potash fertilizer

(1) due to soil application

Potash fertilizer should first be put in the areas where the soil is seriously deficient in potassium. From the point of view of soil texture, the content of available potassium in sandy soil is often low, so potassium fertilizer should be increased, while the content of available potassium in clayey soil is often high, which can be applied less or not. Potassium sulfate can be applied in soils lacking potassium and sulfur, and potassium chloride can not be applied in saline-alkali soil.

(2) due to crop application

When used in rainy areas or areas with irrigation conditions and good drainage conditions, potassium chloride can be applied to most crops, while a few cash crops should not be used to improve their quality.

(3) reasonable collocation

Potassium sulfate is better for tobacco, sugar crops and fruit trees; because of the high cost of potassium sulfate, potassium sulfate can be used in high-efficiency cash crop fields, and cheaper potassium chloride should be used in general field crops except a few crops that are sensitive to chlorine.