Potash is one of the essential nutrients for crop growth, but how to use it correctly to achieve the best results is a science. This article will introduce the use of potash fertilizer in detail, precautions and other aspects to help readers better use potash fertilizer to improve the yield and quality of crops.
First, the role of potassium fertilizer.
The main role of potassium fertilizer is to promote the growth of plants, enhance resistance, improve photosynthetic efficiency, and increase yield and quality. Potash is an essential nutrient for many crops, especially in sandy and acidic soils.
Second, the types of potash fertilizer.
At present, the common potash fertilizers on the market mainly include potassium chloride, potassium sulfate, potassium nitrate, etc. Among them, potassium chloride has the highest potassium content, but it is not suitable for saline-alkali land and chlorine-resistant crops. Potassium sulfate has a high potassium content and contains sulfur, which is suitable for sulfur-loving crops such as vegetables; Potassium nitrate contains nitrogen and potassium, two nutrients, and is suitable for crops that require more nitrogen.
Third, the use of potash fertilizer.
1.Basal fertilizer: Before sowing or transplanting, potassium fertilizer is mixed with organic fertilizer and phosphate fertilizer and applied to the soil, which can promote root development and plant growth.
2.Top dressing: During the crop growth period, timely topdressing of potassium fertilizer according to the crop growth and soil conditions can promote the photosynthesis and nutrient absorption of crops, and improve the yield and quality.
3.Foliar sprays: For some potassium-loving crops, foliar sprays can be used to supplement potassium fertilizers, and the spraying concentration is generally 05-1%。
4. Precautions.
1.Pay attention to soil pH: Potash fertilizers are easily fixed in acidic soils, so the soil pH should be adjusted before use.
2.Pay attention to the amount of fertilizer and the period of fertilization: the amount of fertilizer and the period of fertilization should be reasonably determined according to the growth of crops and soil conditions, so as to avoid the negative impact of excessive fertilization and improper fertilization period.
3.Pay attention to the ratio of fertilizer: when using potassium fertilizer, you should pay attention to the ratio of other fertilizers, and avoid single fertilization and excessive fertilization.
4.Pay attention to storage: Potash fertilizer is easy to absorb moisture and agglomerate, so you should pay attention to moisture and sun protection when storing.
5. Practical application cases.
In practice, fertilization programs need to be developed according to different crop and soil conditions. For example, in potato planting, potassium fertilizers with high sulfur content such as potassium sulfate or potassium chloride can be selected for base fertilizer, and fertilizers with more nitrogen and potassium content such as potassium nitrate can be selected for top dressing; In citrus planting, fertilizers with high sulfur content such as potassium sulfate or potassium chloride can be selected for basal fertilizer, and high concentration phosphate fertilizers such as potassium dihydrogen phosphate can be selected for foliar spraying. At the same time, in the process of fertilization, it is also necessary to pay attention to controlling the amount of fertilizer and the fertilization period to avoid problems such as root burning and leaf injury.
In short, in order to achieve the best effect of potash fertilizer, it is necessary to understand the knowledge, types and methods of potash fertilizer, and formulate a reasonable fertilization plan according to the actual situation. Only by using potash fertilizer scientifically and rationally can we give full play to its role in increasing yield and quality, and provide a strong guarantee for the development of agricultural production.