Professor Zhang Chenglin of the South China Agricultural University pointed out in his report that China, as a major fertilizer producer, produces only a very small percentage of the total fertilizer composition. The main varieties of liquid fertilizers in my country are liquid foliar fertilizers and fertilization, while the production of clear liquid fertilizers and suspended fertilizers has just started. There are many limiting factors in this development process. If you want rapid development, you must do the following: 1. Establish a production plant of ammonium polyphosphate and urea ammonium nitrate solution to provide basic raw materials. 2. Establish a plant for producing liquid or suspended liquid fertilizers and establish a distribution system. 3. Formulate technical standards and production equipment standards for liquid fertilizers. 4. Develop fertilizer application equipment for liquid fertilizers. 5. Establish a liquid fertilizer industry association or foundation. 6. Widely promote the benefits of liquid fertilizers and publish technical books on liquid fertilizers. At the same time, Professor Zhang also made it clear: "No matter how, liquid fertilizer is a typical energy-saving and environmentally friendly product, it will be the new favorite of China's fertilizer industry in the future, and the market potential is huge."
Professor Wu Lishu of Huazhong Agricultural University also made it clear: "Liquid fertilizer is one of the new development directions of fertilizers, because it has uniform application; saves labor; improves fertilizer utilization; saves production costs; saves packaging and transportation costs and other major advantages."
In addition to these, the connotation of liquid fertilizers is also reflected in: traditional liquid fertilizers often contain only three elements of fertilizers, so they are often called liquid compound fertilizers. In order to improve the effect of liquid fertilizers and further improve their functions, adding medium and trace elements, nutrients and other synergists to liquid fertilizers is an important direction for the future development of liquid fertilizers.
Afterwards, Professor Wu explained in detail the technical issues concerning the addition of trace elements in liquid fertilizers, mainly concerning the amount, type, form, conditions and raw materials used. Professor Wu also explained about special trace elements. Such as calcium, the application of acid soil is effective, but it cannot satisfy the fruit; the application of alkaline soil is ineffective; the foliar application is effective, but it cannot fully satisfy the fruit; if this happens, the main method is: use chelation, that is, Spraying fruit. Another example is zinc, manganese, and copper, which do not need to be applied in acid soils, but are ineffective in alkaline soils; the main method is foliar spraying.
Professor Chen Qing of China Agricultural University clearly expressed the view that liquid fertilizer is the future trend. Professor Chen pointed out that liquid fertilizer has many advantages, but also has many disadvantages, so we have to continuously improve it. The research and development direction of liquid fertilizers is mainly concentrated on these six points: One of the research and development hot spots is the need to find more suitable formulas. The second hot spot of research and development is the need for more distinctive raw materials. The main raw materials here are: urea ammonium nitrate solution (UAN) and other clear fertilizers, ammonium polyphosphate, suspending agent, fulvic acid, humic acid (suspension), amino acid powder and amino acid mother liquor, alginic acid, chitin and oligosaccharide Sugar, microorganisms/probiotics, polyglutamic acid (γ-PGA). The third research and development hotspot is the need for stable product characteristics; the fourth research and development hotspot is the need for standardized production processes and equipment; the fifth research and development hotspot is the need for a good distribution and transportation model and supporting fertilizer application equipment; the sixth research and development hotspot is the need for complete Package fertilization and perfect agrochemical services.
For the liquid fertilizer market, Prof. Chen analyzed that the following two points are important influencing factors: One is the support from the policy level. The second is the pressure from the solid fertilizer market.