Slow-release fertilizer is a kind of slow-release fertilizer, mainly nitrogen. Its nutrition is relatively simple and will be greatly influenced by chemical and biological activities. Can be used for drip irrigation, micro-spraying, sprinkler irrigation and other fertilization methods. After dissolving in water, the residue is less, which can improve the utilization rate of fertilizer, enhance the disease resistance and lodging resistance of crops, and help to increase production and income.
Compound fertilizer is a three-element fertilizer of nitrogen, phosphorus and potassium, which is rich in nutrition. After the fertilizer is dissolved in water, there is a lot of residue, which is not conducive to drip irrigation and has a large residue. Its function can improve fertilization effect, ensure balanced supply of nutrients, increase crop yield and improve crop quality.
How to apply fertilizer correctly
Fertilization needs to control the distance. Fertilizer is a chemical synthetic fertilizer, which often contains biuret. Once you get too close to the roots of plants, you will burn seedlings. Therefore, it is suggested that fertilization should be carried out within a distance of about one meter from the plant, and fertilization should be as little and far as possible for the seedlings.
Fertilization takes time. Plant fertilization is divided into three stages: base fertilizer, flower bud fertilizer and bud promoting fertilizer. These three periods are generally when plants need nutrients most, and the lack of a large number of trace elements will have a great impact on their growth and development.
Fertilization requires the right medicine. Plants generally need a lot of nitrogen, phosphorus and potassium as nutrients, but trace elements are also essential in their growth process. Therefore, when fertilizing, we should also pay attention to what plants lack and what to use.
The reaction of lacking nitrogen, phosphorus, potassium and other elements usually occurs on old leaves. The lack of trace elements such as magnesium, iron and zinc is generally manifested in new leaves. According to the growth of plants, we should find out what is missing and what is supplemented, so that plants can grow well and develop steadily.
Refer to the above contents: Baidu Encyclopedia _ Slow Release Fertilizer Baidu Encyclopedia _ Compound Fertilizer