Compound fertilizer which refers to a fertilizer made by chemical methods with at least two of the three nutrients of nitrogen, phosphorus and potassium. Organic fertilizers contain carbonaceous materials, whose main function is to provide plants with missing nutrients, mainly from the processing or waste of animal and plant residues, and is one of the main fertilizers for the production of green food.

Definition of Compound Fertilizer

1. Compound fertilizer is a kind of compound fertilizer, which refers to fertilizer made by chemical method with at least two nutrients among the three nutrients of nitrogen, phosphorus and potassium.

2. The advantages of compound fertilizer are that it contains more nutrients, less side components, good physical properties, and is beneficial to balanced fertilization to increase fertilizer utilization and promote crop yield.

3. Fixed nutrient ratio is a major shortcoming of compound fertilizers, which cannot meet the variety, quantity and ratio of nutrient elements required by different soils and crops.

4. In order to improve the use effect, you can test the soil for improvement, test the soil quality and nutrients, and pay attention to the application of unit fertilizer during the period.

Classification of Compound Fertilizer

1. Special compound fertilizer for rice

The main raw materials of special compound fertilizer for rice are made of urea, ammonium phosphate and potassium chloride. The effective nutrient content of nitrogen, phosphorus and potassium is higher than 25%. It is generally used as base fertilizer and top dressing. The dosage is 60-75kg/mu. The total fertilization amount is 65. %, and top dressing accounts for about 35%.

2. Special compound fertilizer for corn

Corn special fertilizer is a professional fertilizer applied to corn, and it is produced in accordance with the characteristics of corn fertilizer and the demand for nitrogen, phosphorus and potassium.

3. Special compound fertilizer for bamboo

The main raw materials of special compound fertilizer for bamboo are urea, ammonium phosphate, potassium chloride, etc. The effective nutrient content of nitrogen, phosphorus and potassium is higher than 28.5%, and the dosage is 50kg/mu. It is applied in strip or furrow during weeding from May to June.

4. Special compound fertilizer for tea

A. The main raw materials of special compound fertilizer for tea are urea, ammonium phosphate, potassium sulfate, etc., as well as moderate and micronutrient elements such as magnesium and boron.

B. The effective nutrient content of nitrogen, phosphorus and potassium in the special compound fertilizer for tea is higher than 25.%, the fertilizer rate for adult trees is 70-120kg/mu, and the yield is about 50-150kg/mu.

C. The fertilization amount of special compound fertilizer for tea is applied according to the proportion of the total amount. For example, about 50% of spring tea is harvested 30 days before harvesting, 25% after harvesting, and 25% 3-4 weeks before autumn tea harvesting.

5. Special compound fertilizer for tobacco

The special compound fertilizer for tobacco has medium fertility. When the tobacco is transferred, 50g/plant shall be applied in strips or furrows.

6. Potassium sulfate compound fertilizer for fruit tree

A: The main raw materials of potassium sulfate fruit tree compound fertilizer are urea, ammonium phosphate, potassium sulfate, etc., among which the effective nutrient content of nitrogen, phosphorus and potassium is higher than 36%.

According to the growth of 3-4kg/year for each adult tree, make a 30cm trench at the drip line of the canopy, and apply it evenly in a ring, circle or strip.

7. Non-polluted compound fertilizer for vegetable

A. The main raw materials of pollution-free vegetable compound fertilizer are urea, ammonium phosphate and potassium sulfate, of which the effective nutrients of nitrogen, phosphorus and potassium are higher than 35%.

B. According to 80-150kg/mu per stubble of fruits and vegetables, 30-60kg of basal fertilizer and 50-90kg of top-dressing fertilizer; 60-120kg/mu of leafy vegetables per stubble, 15-40kg of basal fertilizer and 40-80kg of top-dressing.

8. Special compound fertilizer for eucalyptus

A. The special fertilizer for eucalyptus, namely eucalyptus fertilizer, is a high-tech afforestation product based on the characteristics of eucalyptus, combined with the latest technology and scientific theories.

B. Add rich ammonia, phosphorus, potassium and other elements, with various middle and trace elements such as magnesium, copper and zinc, and organic matter containing humic acid

C. It is beneficial to balance nutrition, enhance stamina and promote growth, prevent diseases such as hanging tip disease, ensure yield and yield, and increase yield and profit.

9. High-concentration compound fertilizer

A. The main raw materials of high-concentration compound fertilizer are urea, ammonium phosphate and potassium chloride, of which the effective nutrient content of nitrogen, phosphorus and potassium is higher than 45%.

B. It is usually used as base fertilizer and topdressing, and the amount of application is determined according to other factors such as soil fertility and the quality of crop varieties.