In recent years, with the development requirements of modern agriculture: fertilizer reduction, environmental protection, soil remediation..., a large number of new fertilizers have emerged on the market, which has become a hot field for the development of the industry. Foliar fertilizer, bacterial fertilizer, and water-soluble fertilizer have become popular among farmers. Of agricultural products. So do you really understand these new fertilizer products? What are the misleading aspects of foliar fertilizer, bacterial fertilizer, and water-soluble fertilizer during the purchase and use process?

　　 Foliar spraying can be done, without base and top fertilizer

　　01

　　 This is obviously misleading. To be precise, foliar fertilization is a supplement for plants to absorb nutrients to make up for the lack of nutrient absorption by the root system. Foliar fertilization cannot replace soil fertilization. It is mainly sprayed directly on the surface of crop leaves, absorbed by the leaves, and transported nutrients to various parts of the crop body.

　　 There are many types of foliar fertilizers, which can be summarized into four categories: nutritional, regulating, biological and compound.

Nutritional foliar fertilizer: This type of foliar fertilizer has a high content of nutrients such as nitrogen, phosphorus, potassium and trace elements. The main function is to provide various nutrients for plants and improve the nutritional status of plants, especially suitable for plants in the later stages of growth. Kind of nutritional supplement.

　　Adjustable foliar fertilizer: This type of foliar fertilizer contains substances that regulate plant growth, such as auxins, hormones and other ingredients. The main function is to regulate plant growth and development. It is suitable for use in the early and mid-term of plant growth. Be cautious when it comes to orchids. You can use a small amount first.

　　 Biological foliar fertilizer: This type of fertilizer contains microorganisms and metabolites, such as amino acids, nucleotides, and nucleic acids. The main function is to stimulate plant growth, promote plant metabolism, reduce and prevent the occurrence of pests and diseases.

　　 Compound foliar fertilizer: There are many kinds of this kind of foliar fertilizer, and the compound mixed forms are various. It has many functions. A foliar fertilizer can not only provide nutrition, but also stimulate growth and regulate development.

　　 The main advantages of foliar fertilization: foliar fertilization is a fertilization technology with fast fertilizer efficiency, high fertilizer utilization, and low dosage.

One of 　　术. The leaves absorb faster than the roots and can quickly provide nutrients to plants. But the disadvantage is that the application amount is limited and the effect is relatively short-lived. If single application of foliar fertilizer, without application of base fertilizer and top dressing, it is difficult to achieve the desired effect.

　　 fruity.

　　 "long hair" fertilizer = biological bacterial fertilizer

　　02

　　 This sentence will be used by some counterfeit bio-fertilizer manufacturers and distributors.

　　 1. Common biological fertilizers do not "grow hair" during normal storage. The common “long-haired” product is organic fertilizer without thorough fermentation. This may be because the organic raw material itself contains harmful bacteria that have not been killed by the high temperature of the first fermentation. Organic fertilizers may spontaneously undergo secondary fermentation in the packaging bag before unpacking and encounter high temperature and humidity, and then grow "white hair", mostly harmful fungi of the genus Pythium.

　　2. Because of the large amount of "long hair", this product does not add any "functional bacteria", and it is likely that the moisture content exceeds the standard, and there is a danger of burning seedlings.

　　3. The regular and common microbial inoculants are added with "spore fungi", and the fertilizer will not grow hair.

　　The quality of imported water-soluble fertilizer is better than domestic water-soluble fertilizer

　　03

　　 There is a big gap in the price of fully water-soluble fertilizers on the market today. Some 6,000 yuan can buy a ton, while some can reach 10,000 yuan per ton, or even more than 20,000 yuan. Why are the prices of the same fully water-soluble fertilizers so different? Today Xiao Dai will take you to understand that this is mainly related to the source of potassium and the level of raw materials used.

　　 Generally speaking, potassium chloride type fertilizers are the cheapest, followed by potassium sulfate type, and potassium nitrate and potassium dihydrogen phosphate type are the best.

Because potassium sulfate type and potassium chloride type fertilizers contain a large amount of sulfate ions and chloride ions, long-term application will easily cause crops to lack medium element calcium, which may cause fruit cracking, poor growth point development, yellow leaves, and even fruit umbilical rot. occur.

　　Many crops are particularly sensitive to chloride ions, such as tobacco, potato, sweet potato, sugar cane, watermelon, grape, citrus, apple, tea, cabbage, pepper, lettuce, amaranth, etc. are all chlorine-free crops.

　　 Secondly, from the level of raw materials used, different levels of raw materials have obvious differences in fertilizer nutrient content, water solubility, absorption efficiency, heavy metal content, and product stability.

　　 Finally, based on the formula, according to the technical advantages of each manufacturer, a good water-soluble fertilizer will add some combination of additives to formulate the water-soluble fertilizer, the purpose is to further improve the fertilizer utilization rate, and then improve the crop yield and quality.