Scientific selection and application of water soluble fertilizers

With the development of facilities agriculture in the suburbs of Beijing, the application of water-soluble fertilizers as a new type of fertilizer has become increasingly popular, but farmers still lack understanding of them, resulting in improper application and low efficiency. To this end, the water-soluble fertilizers are introduced for identification and application.

Water-soluble fertilizers refer to liquid or solid fertilizers that are dissolved or diluted in water and used mainly for irrigation fertilization, foliar fertilizers, soilless cultures, and soaking of roots. Water-soluble fertilizers can determine the types and formula of nutrients according to the soil nutrient abundance, the level of soil nutrient supply, and the nutrient demand of crops. It can promptly supplement the nutrients lacking in crops, reduce or eliminate the deficiency symptoms of crops, and is mainly used for top dressing. Balancing crop nutrition to meet the temporary supply of nutrients for a crop during a growing period.

How to identify water-soluble fertilizers

To see the dissolution: You can mix a bag of water-soluble fertilizer and about 1 kg of water to see the dissolution. If all of the water-soluble fertilizers are dissolved and there is no sedimentation, it means that the products are of good quality, and the effective nutrients are high, and the nutrients are easily absorbed by the crops. If the water-soluble fertilizer can not be completely dissolved, there is precipitation in the water, indicating that the quality of the product does not pass, and it is easy to block the sprayer nozzle during spraying, and the operation is inconvenient, and the utilization of nutrients by the crop is also not high.

Look at the dosage form and dryness: At present, there are two types of solid and liquid water-soluble fertilizers on the market. In general, solid water-soluble fertilizers are superior to liquid water-soluble fertilizers. Solid water-soluble fertilizers are divided into two kinds: granular and powdery, and granular water-soluble fertilizers are superior to powdery ones. Because the granular water-soluble fertilizer is processed through a special process, it has the advantages of convenient application, high degree of drying, and easy preservation.

Application of water soluble fertilizer precautions

Water-soluble fertilizers are more targeted than other fertilizers. Therefore, when selecting water-soluble fertilizers, we must pay attention to the appropriate areas and crops of the products. Otherwise, we will not receive corresponding results and may even cause a reduction in production.

The selection must be targeted: Crop plants mainly absorb nutrients from the soil, and the content of elements in the soil plays a decisive role in the growth of the plants. Therefore, before determining the type of water-soluble fertilizers to be selected, the content of elements in the soil and the acidity and alkalinity of the soil must be determined. Conditionally, the presence of elements in the plant body can also be determined, or the water solubility can be determined according to the external characteristics of the deficiency. The type and amount of fertilizer. It is generally believed that in the case of insufficiency of basal fertilizer application, water-soluble fertilizers containing nitrogen, phosphorus, and potassium may be used. When sufficient basal fertilizers are used, water-soluble fertilizers mainly composed of trace elements may be selected. For example, the strawberry fruit deformity is related to the deficiency of boron nutrition. Therefore, it is generally effective to apply boron fertilizer 2-3 times during the flower bud stage, which can achieve very good results; the “split stem disease” of celery is also caused by boron deficiency, and can be sprayed with borax or Boric acid supplements.

Solubility is better: Since the water-soluble fertilizer is sprayed or drip-irrigated directly into a solution, the water-soluble fertilizer must be soluble in water. Otherwise, the insoluble matter in the water-soluble fertilizer can not only be absorbed after being sprayed on the surface of the crop, and sometimes it may even cause damage to the leaves or clogging the drip irrigation pipe or dripper.

Acidity should be appropriate: nutrient elements have different states of presence under different acid and alkaline conditions. To maximize the benefits of fertilizer, there must be a suitable range of acidity, generally requiring a pH of between 5-8. If the pH is too high or too low, in addition to the absorption of nutrient elements, it will also cause harm to the plants.

To be used along with the use: The physical and chemical properties of fertilizers determine that some nutrients tend to deteriorate. Therefore, some water-soluble fertilizers must be used with them and cannot be stored for a long time. Such as ferrous sulfate water-soluble fertilizer, the new preparation should be light green, no precipitation, if the solution becomes auburn or auburn precipitation, indicating that low-priced iron has been oxidized into high-priced iron, fertilizer efficiency has been greatly reduced. If the ferrous sulfate solution is formulated with a slightly alkaline or high calcium content, precipitation and oxidation will be accelerated. Therefore, in order to reduce the formation of precipitates and slow down the oxidation rate, when preparing the ferrous sulfate solution, first add 10 ml of mineral acid per 100 liters of water, or add 100-200 ml (about 100-200 g) of vinegar to acidify the water. Afterwards, the ferrous sulfate is dissolved with water that has already been acidified. Of course, it is also possible to use some organic chelated iron fertilizers, such as iron fulgurate instead of ferrous sulfate.

Pay attention to the application amount and application concentration: The amount of water-soluble fertilizer used per acre should be determined according to the law of fertilizer requirement and soil fertility; the concentration of water and the number of applications should be increased or decreased according to the season and crop growth.

Water-soluble fertilizers are generally not placed in direct sunlight and should be stored in a cool, dry place.

Hair Growth Support Mints

Hair Growth Support Mints,Hair Growth Mints,Support Mints Hair Growth,Best Hair Growth Support Mints

Soar Biotech Co.,Ltd , https://www.xylitgum.com