Water-soluble fertilizer refers to a multi-element compound fertilizer that can be completely dissolved in water. Compared with traditional superphosphate, granulated compound fertilizer and other varieties, water-soluble fertilizer has obvious advantages. It is a quick-acting fertilizer with good water solubility and no residue. It can be completely dissolved in water and can be directly absorbed and utilized by the roots and leaves of crops. Its effective absorption rate is more than double that of ordinary chemical fertilizers, reaching 80%-90%, and the fertilizer efficiency is fast, which can solve the nutrient demand of high-yield crops in the rapid growth period. The following Zhengdao Fertilizer Network will tell you how to identify qualified water-soluble fertilizers. .
Look at the recipe
Water-soluble fertilizer is actually a formula fertilizer. Different formulas are prepared according to different crops, different soils and different water quality to maximize the nutritional needs of crops, improve fertilizer utilization and reduce waste. Therefore, formula is the key to distinguishing the quality of water-soluble fertilizers. .
A look at the ratio of NPK. For example, the commonly used high-potassium formula, according to the nutrient requirements of the general crop fruit setting period, the ratio of nitrogen: phosphorus: potassium is best at 2:1:4, and the ratio of different effects will be very different.
Second, look at the trace elements are incomplete, the ratio is reasonable. Good water soluble fertilizer, 6 kinds of trace elements must be contained, and there must be a scientific ratio, because there is a problem of antagonistic and synergy between the various nutrients, not one or a few elements are high, and It is better to be scientifically reasonable.
Look at the content
Good water soluble fertilizers are made of industrial grade or even food grade raw materials. They are of high purity and do not contain any fillers. Therefore, the content is relatively high, and 100% are nutrients that can be absorbed and utilized by crops. The phosphorus and potassium content is generally up to 60% or even higher. Poor water-soluble fertilizers are generally low in content, and for each additional content, the cost will vary and the price of the fertilizer will vary.
Look at water solubility
To identify the water solubility of water-soluble fertilizer, it is only necessary to dissolve the fertilizer into clear water to see if the solution is clear and transparent. If it is the same as the water except the color of the fertilizer, the water solubility is very good; if the solution is cloudy or even precipitated, the water solubility is very poor. Can not be used in drip irrigation systems, the waste of fertilizer will be more.
Smell the smell
Good water-soluble fertilizers are made from high-purity raw materials without any taste or a very light fragrance. Fertilizers with odors are either hormones or too many harmful substances. This fertilizer works quickly, but it does not have any benefit to the disease resistance and sustained yield and quality of the crop.
Make comparison
After the preliminary screening of the water-soluble fertilizer through the above simple methods, then the field comparison, through the actual application effect to determine what water soluble fertilizer to choose. Good fertilizers don't work too fast, because nutrients have a process of absorption and transformation. Good water-soluble fertilizers can be seen in two or three times in terms of plant growth, crop quality, crop yield and disease resistance. The more the number of uses, the greater the difference.
[Extended reading] Five factors that limit the development prospect of water soluble fertilizer in China
On December 21, 2014, the “2014 China Water-Soluble Fertilizer Development Symposium†hosted by China Nitrogen Fertilizer Industry Association was held in Guangzhou. Representatives from water-soluble fertilizer production and management enterprises, universities, research institutions and government authorities from all over the country. More than 100 people attended the meeting, and the Petrochemical and Chemical Division of the Raw Materials Industry Department of the Ministry of Industry and Information Technology also sent staff to attend the meeting. The meeting summarized the achievements of China's water-soluble fertilizer development in recent years, and deeply analyzed the difficulties and problems in the current development of water-soluble fertilizers, and put forward many suggestions on how to promote the healthy development of water-soluble fertilizer industry.
In view of the future development of water-soluble fertilizer in China, the participants suggested: First, set up special projects for water-soluble fertilizers, increase support for irrigation and fertilization facilities and storage tank construction; second, carry out cooperation in production, education and research, accelerate the pace of technological innovation in water-soluble fertilizers, and accelerate the promotion of water and fertilizer. Integrated technology; Third, improve water soluble fertilizer product standards, strengthen product impurity control, avoid toxic and harmful substances contaminating soil, improve water soluble fertilizer utilization; Fourth, actively cultivate water soluble fertilizer market, innovative marketing and service model, and promote water soluble fertilizer science Application and market development.
[Expanding reading] Advantages and disadvantages of water soluble fertilizer
In the application of farmland, the application of such fertilizers is not the same as that of large fertilizers. Generally, it is combined with irrigation, and the fertilizer and irrigation water are integrated into the root soil or crop leaves through different irrigation methods. According to different irrigation methods, fertilization can be divided into flushing, spraying and fertilizing. The application of the solid water soluble fertilizer is first dissolved and formulated into a mixed solution, followed by application or spraying. The liquid water soluble fertilizer needs to be equipped with pipelines, storage tanks, fertilizer applicators and other ancillary equipment. The fertilizer is easily dissolved into the irrigation water, which can be sprayed and dripped, or directly diluted with water to be sprayed with foliar fertilizer.
Advantages of water-soluble fertilizer: First, the use of water, fertilizer, and water, to achieve water and fertilizer integration, high fertilization efficiency, and can reduce the total amount of fertilizer, play a synergistic effect of fertilizer and water, so that the efficiency of fertilizer and water use Significantly improved. Second, the fertilizer efficiency is fast, which can solve the nutritional needs of high-yield crops in the rapid growth period.
Disadvantages of water-soluble fertilizer: First, the price of water-soluble fertilizer is generally high, which is not conducive to popularization. Second, it is fast-acting and difficult to store in the soil for a long time. The amount of fertilizer should be strictly controlled. If the single use is slightly more, it will cause the loss of fertilizer, which will reduce the economic benefits of fertilization, fail to achieve the goal of high yield, high quality and high efficiency, and will also cause pollution of the water environment, which is not conducive to sustainable development.
This article URL: How to identify the development prospects of water-soluble fertilizer and water-soluble fertilizer in China
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