What are the advantages of compound fertilizer?

Compound fertilizer has the advantages of high nutrient content, few side components and good physical shape, which plays a very important role in balanced fertilization, improving fertilizer use efficiency and promoting the high and stable yield of crops. But it also has some disadvantages, for example, its nutrient proportion is always fixed, and the type, quantity and proportion of nutrient elements required by different soils and different crops are diverse, so let's take a look.

What are the compound fertilizers?

1. Special fertilizer for rice: it is made of urea, ammonium phosphate and potassium chloride as the main raw materials. The effective nutrient content of nitrogen, phosphorus and potassium is ≥ 25%. Can be used as base fertilizer, topdressing, generally 60-75 kg per mu, base fertilizer accounts for 60-70% of the amount of fertilizer, topdressing accounts for 30-40%.

2. Special fertilizer for corn: it is a special fertilizer produced by professional formula according to the characteristics of fertilizer demand in the growth process of corn, which is suitable for the demand of nitrogen, phosphorus and potassium in corn.

3. Bamboo special fertilizer: it is made of urea, ammonium phosphate and potassium chloride as the main raw materials, and the effective nutrient content of nitrogen, phosphorus and potassium is ≥ 28.5%. 50 kg per mu, combined with weeding from May to June every year, using strip application or furrow application.

4. Tea special fertilizer: it is made of urea, ammonium phosphate, potassium sulfate and appropriate amount of magnesium, boron and other micronutrient elements as the main raw materials. The effective nutrient content of nitrogen, phosphorus and potassium is ≥ 25.0. To determine the amount of fertilizer application according to the yield of adult trees per mu, the general yield of dry tea per mu is 50kg, 100kg and 150kg, and the application of special fertilizer is 70kg, 90kg and 120kg respectively. According to 50% of the total consumption of spring tea one month before mining, 25% of the total amount of spring tea after picking, and 25% of the total amount of autumn tea 15-20 days before picking.

5. Special fertilizer for tobacco: the general medium fertility field is 50g / plant, and it is applied by opening a ditch when the tobacco is transferred.

6, potassium sulfate fruit tree fertilizer: urea, ammonium phosphate, potassium sulfate as the main raw materials, nitrogen, phosphorus, potassium effective nutrient content ≥ 36%, according to mature trees 3-4 kg / plant year, uniform application near the crown dripping line, ring implementation, ring application, strip application can be used, ditch depth 30CM.

7, pollution-free vegetable fertilizer: urea, ammonium phosphate, potassium sulfate as the main raw materials, nitrogen, phosphorus, potassium effective nutrient content ≥ 35%, melons and fruits and vegetables according to 80-150kg / mu stubble, of which 30-60kg as base fertilizer, 50-90kg as topdressing. Leafy vegetables according to 60-120 kg / mu stubble, of which 15-40 kg as base fertilizer, 40-80 kg as topdressing.

8. Eucalyptus special fertilizer: eucalyptus fertilizer for short. It is a modern high-tech afforestation product carefully developed according to the unique physiological characteristics of eucalyptus, the latest technology of high-yield forest management of eucalyptus and the related scientific theories of botany, soil nutrition, forestry production and so on. It is not only scientifically matched with rich nutrients necessary for the rapid growth of eucalyptus, such as ammonia, phosphorus and potassium, but also according to the fact that there is a general lack of trace elements such as boron and zinc in the soils of southern China. Eucalyptus is often planted in mountainous areas and sloping lands where there is a lack of organic matter and poor fertility, and many kinds of trace elements such as magnesium, copper, zinc and organic matter containing humic acid are reasonably added, which can not only balance the nutrition of eucalyptus, but also enhance the growth stamina. Moreover, it can effectively prevent the occurrence of physiological diseases such as drooping tip disease, ensure the healthy and rapid growth of eucalyptus, greatly increase the yield and yield of eucalyptus, and have a remarkable effect on increasing production and income.

9. High concentration compound fertilizer: urea, ammonium phosphate and potassium chloride are used as the main raw materials. The effective nutrient content of nitrogen, phosphorus and potassium is ≥ 45%, which can be used as base fertilizer and topdressing fertilizer. The amount of application should be determined according to soil fertility, crop types and other factors.

10. Slow-release fertilizer and controlled loss fertilizer, etc.

Advantages of compound fertilizer

Compound fertilizer mainly includes disc granulation, drum granulation, spray granulation, ammoniation granulation and so on. No matter what kind of granulation process, it has the following advantages:

1. Comprehensive nutrients and high content: contains two or more nutrient elements, which can supply a variety of nutrients needed by crops at the same time for a long time, and improve the effect of fertilization.

2. Good physical shape, easy to apply: the particle size of compound fertilizer is generally uniform, the hygroscopicity is small, it is easy to store and apply, and it is more suitable for mechanized application.

3. Few secondary components have no adverse effect on soil: most of the nutrients contained in compound fertilizer are necessary for crops, which can not only avoid the waste of some material resources, but also avoid the adverse effects of some by-components on soil.

4. The proportion is diverse, which is conducive to targeted selection and application: the main characteristic of compound fertilizer is that it can be selected and applied according to the characteristics of soil nutrients and crop nutrients to avoid the waste of some nutrients and improve the yield-increasing effect of fertilizer.

5. Reduce costs and save expenses: compound fertilizers have less secondary components, higher content of effective components than simple fertilizers, smaller volume of fertilizers containing the same amount of nutrients, low packaging and transportation costs, and convenient application.