Can rice use potassium dihydrogen phosphate increase production? How to use potassium dihydrogen phosphate and purchase tips

1. The effect of spraying potassium dihydrogen phosphate in the middle and late stages of rice growth:

Potassium dihydrogen phosphate is a high concentration and quick-acting phosphorus-potassium compound fertilizer. It can be sprayed in the middle and late stages of rice growth, which can not only prolong the leaf to maintain high chlorophyll content, enhance its photosynthetic capacity, increase the rate of ear formation, but also promote grain filling during maturity. Improve the seed setting rate and 1000-grain weight, improve the resistance and cold resistance of rice, and create conditions for stable and high yield of rice

2. The best period and dosage of spraying potassium dihydrogen phosphate in rice:

Rice is sensitive to phosphorus and potassium during the tillering, booting and heading stages of rice, and can be sprayed with potassium dihydrogen phosphate. It is best to spray 2 to 3 times before and after the rice heading period, with an interval of 10 days. Generally, it is sprayed with 150-200 g of potassium dihydrogen phosphate and 50 kg of water per acre (that is, 50-60 g of potassium dihydrogen phosphate per pot of water).

The spraying time is when the leaf surface is not dewed in the afternoon, spray evenly with a spray nozzle, and avoid excessive concentration of the leaf. At the same time, when spraying potassium dihydrogen phosphate, an appropriate amount of urea can be selectively added according to the condition of the seedling (the spraying concentration is about 1%), and the nitrogen fertilizer is insufficient, and the effect is better.

3. Matters needing attention when spraying rice with potassium dihydrogen phosphate:

1 Avoid excessive concentration, and repeatedly spray the remaining liquid to cause burnt leaves. 2 When spraying potassium dihydrogen phosphate, avoid mixing other pesticides at will, resulting in reduced pesticide control. 3 After the spray, the following heavy rain should be repeated.

Detailed description: What are the effects and effects of potassium dihydrogen phosphate in rice?

Potassium dihydrogen phosphate is a high-efficiency phosphorus-potassium compound fertilizer suitable for root spraying. It has many excellent effects such as significantly increasing yield, increasing yield, optimizing quality, lodging resistance, resisting pests and diseases, preventing premature aging, and overcoming crop growth. The role of undernutrition due to decreased root aging absorption capacity.

The specific role of potassium dihydrogen phosphate in rice

High-purity potassium dihydrogen phosphate (such as phosphorus and potassium source pool) sprayed in the middle and late stages of rice growth, not only can increase the chlorophyll content of leaves, enhance its photosynthetic capacity, increase the rate of ear formation, but also promote grain filling during maturity and improve fruiting. The rate and 1000-grain weight increase the resistance of rice to stress and disease, and create conditions for stable yield and high yield of rice.

Yield increase

In the late growth stage of rice, the root system gradually senescence, and the absorption capacity is greatly weakened. The high-purity potassium dihydrogen phosphate is applied in addition to the root of the ear, which can make up for the insufficient supply of phosphorus and potassium nutrients and improve the yield.

Quality gain

The application of high-purity potassium dihydrogen phosphate in rice can reduce the number of batches on the secondary branches and increase the 1000-grain weight of the middle and lower grains of the ear. The main mechanism is that the application of potassium dihydrogen phosphate improves the supply of grain filling material in rice panicles and makes some weak flowers firm and normal.

Increase rice photosynthesis

The application of high-purity potassium dihydrogen phosphate in rice can increase the chlorophyll content of flag leaves in the heading stage and the filling stage, so that the photosynthesis intensity of rice can be significantly improved in key periods such as booting stage, heading stage and filling stage, and photosynthetic product synthesis The amount is obviously increased, and the transport of photosynthetic products to the panicle is also obviously promoted.

Increase grouting rate

The application of high-purity potassium dihydrogen phosphate in rice can increase the grain filling rate and promote grain filling, especially for the filling of the lower part of the ear. It is worth noting that although the application of potassium dihydrogen phosphate has no obvious effect on the early and late grain filling, it has an early ripening effect on rice.

Improve root vitality

The application of potassium dihydrogen phosphate in rice can increase the root respiratory matrix and increase the root activity, which is beneficial to the absorption and utilization of nutrients in the soil by rice.

Use of potassium dihydrogen phosphate on rice

Rice is sensitive to phosphorus and potassium during the tillering, booting and heading stages of rice, and can be sprayed with potassium dihydrogen phosphate.

Tillering period: 200 g of high-purity potassium dihydrogen phosphate (Phosphorus Potassium Source Library) can be sprayed once with 15 kg of water to promote effective tillering and ensure the nutrition required for normal rice growth.

Booting stage: Spraying once with 200 grams of phosphorus and potassium source pool to 15 kg, the rice ears can be well differentiated.

Heading period: 15 g of leaf surface spray with 100 g of phosphorus and potassium source pool can reduce premature aging of stem and leaf yellowing.

Precautions

1. Do not allow the concentration to be too large, and spray the remaining liquid to repeat the spraying, resulting in burning leaves.
2. When spraying potassium dihydrogen phosphate, avoid mixing other pesticides at will, resulting in reduced pesticide control.
3. The spraying time is evenly sprayed with a spray nozzle when the leaf surface is not dewed in the afternoon; the spray is as heavy as the following, and should be re-sprayed once.
4. In addition to paying attention to the concentration and period of spraying, it is also necessary to understand the nutrient status of nitrogen, phosphorus and potassium in the soil, taking into account the trace elements in silicon, calcium and magnesium. To achieve the basic fertilizer, control the nitrogen fertilizer, pay attention to the application of phosphorus and potassium fertilizer, appropriate supplementation of trace elements, in order to achieve the effect of increasing production.

Yue Ge Fertilizer Network Xiaobian tells you how to buy real potassium dihydrogen phosphate

When farmers buy potassium dihydrogen phosphate, they can identify their authenticity from the following aspects, and purchase the potassium dihydrogen phosphate.

1. The package must be marked with the product name “potassium dihydrogen phosphate”. Others such as “composite type” and “improved type” are not genuine.
2. The package must have a real and detailed site, fixed telephone and other content.
3. The authentic potassium dihydrogen phosphate implements the HG2321-92 standard, and only the two elements of phosphorus and potassium, others such as those marked with other elements or other standard numbers can be confirmed as fakes.
4. Potassium dihydrogen phosphate can only be white powder or crystal. If it is liquid or other traits, it is misleading to consumers and can be regarded as fake.
5. Take a little heat on the iron piece, dissolve it into a transparent liquid, and solidify it into a translucent glassy substance after cooling.
6. If the appearance is white crystal or powder, a small amount of exposure to sunlight, the nature of the traits and color does not change can be considered as the real thing, if it is changed, it is doubtful.
7. In fact, the price is also a basis for reference. The phrase that is cheap and not good is still very reasonable.