How to Calculate Fertilizing Quantity by Soil Testing Formula

How to Calculate the Fertilizer Quantity in Soil Testing Formulas Published: 2004-8-18 Source: Currently, formula fertilization has become a hot spot in agricultural production. In general, the recommended application amount for the formula fertilization test is the amount of pure nitrogen, P205 (phosphorus pentoxide), and K2O (potassium oxide). Due to the different effective content of various fertilizers, it is not easy for farmers to accurately grasp the amount of fertilizer used in the production process. Suppose a piece of land is recommended to use 8.5kg of pure nitrogen per mu, 4.8kg of P2O5 and 6.5kg of K2O.
The calculation method for single fertilization is: (the effective content of the recommended fertilizer quantification) 100 = the quantity that should be fertilized. The following results were calculated: Urea application (urea nitrogen content is generally 46%) should be (8.546) 100 = 18.4 kg; applied superphosphate (P2O5 content in superphosphate is generally 12% -18%) Should be (4.812) 100 = 40kg; applied potassium sulfate (K2O content in potassium sulfate is generally 50%) should be (6.550) 100 = 13kg.
The amount of compound fertilizer to be applied is calculated based on the fertilizer with the minimum amount of recommended fertilizer, and then the other two kinds of fertilizers are added. If the content of nitrogen, phosphorus, and potassium marked on a compound fertilizer bag is 15:15:15, then the compound should be applied to the plot: (4.815) 100 = 32 kg. Because the proportion of complex fertilizer nutrients is fixed, it is difficult to meet the needs of different crops for different nutrients in different soils at the same time. Therefore, it is necessary to add simple fertilizer to supplement, and the calculation company is: (recommended fertilizer amount - applied fertilizer amount) to be applied to chemical fertilizer Effective content = increased fertilization amount. This plot applied 32 kg of compound fertilizer with a N, P, and K content of 15%, which is equivalent to 3215 = 4.8 kg of pure nitrogen applied to the soil, and P2O5 and K2O were each 4.8 kg.
According to the requirements of the recommended fertilization amount of pure nitrogen 8.5kg, K2O6.5kg on the table, it is also necessary to increase: urea (8.5-4.8) 46% = 8kg, potassium sulfate (6.5-4.8) 50% = 3.4kg.

Surface Active Agent TC-1000

I. Company profile

Tiancheng Chemical Co., Ltd. is a collectivized high-tech multi-function fine chemical enterprise, integrated with science, industry, trade and research, which is mainly engaged in paper chemicals, Water Treatment Chemicals, rubber and plastic chemicals, agricultural pharmaceutical intermediates, basic chemical materials, food additives, detergent additives and electronic chemicals.

II. Technical indicators:

Appearance

Colorless and transparent liquid

Content

60%

pH value

4-5.5

Viscosity (25℃), mPa·s

≤20

III. Application fields:

1. In the filed of cosmetics, detergents, wool detergents: With the continuous improvement of people`s living standards, the demand for cosmetics, washing products and cleaning products is continuously increasing. As a monomer, the surfactant is applied to many fields, but also use with non-ion preparations jointly, with the function of penetration, humidification, washing and electrostatic elimination, providing help and support for improvement of people`s life and quality of life.

2. In the field of electronic chemicals: the surfactant can be used in cleaning preparations of the electronic products, with the function of washing and electrostatic elimination.

IV. Notes:

1. Storage condition: This product is stored in a cool and dry place (5-30 ℃) to prevent open-air exposure and freezing.

2. If the product storage temperature is below -15 ℃, there will be crystalline polamer. Before using, please heat and stir evenly, not affecting the product quality.

3. The product is slightly acidic. If it is accidentally into the eyes, please wash with water immediately.

V. Packing specification

250 kg plastic drum; IBC tons of barrel; Flexitank.

Surface Active Agent TC-1000

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Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com