The effect of water-soluble fertilizer is obvious, and the advantage of saving fertilizer and water-saving is obvious compared with traditional fertilizer. However, in the process of using it, some farmers also report that the effect of water-soluble fertilizer is not good. What is this?
How to distinguish high-quality water soluble fertilizer to see water-soluble. Dissolving the fertilizer in clean water, if it is clear and transparent, shows good water solubility; if the solution is turbid or even precipitated, the water solubility is poor and cannot be used in drip irrigation systems.
Two smells. Good water-soluble fertilizers are made from high-purity raw materials and have no taste or a very light fragrance. The odor-rich fertilizers are either supplemented with hormones or are too harmful. The fertilizers work quickly, but they do not provide any benefits to the disease-resistance of the crops and the continuous yield and quality.
Third, look at the registration number. The Ministry of Agriculture stipulates that all fertilizer products must be implemented with a factory-certificate and permit escrow certificates are not allowed. The buyer can log on the website of the National Fertilizer Quality Supervision and Inspection Center and enter the registration number to check the authenticity.
How to use water soluble fertilizer
According to the irrigation facilities choose fertilizer. Water soluble fertilizer has an index called "water insoluble matter content". Generally drip irrigation requires water insoluble matter content of less than 0.2%, microspray irrigation water insoluble matter of less than 5%, spray irrigation water insoluble matter of less than 15%, pouring water application requirements are even lower. The lower the water-insoluble content is, the better the fertilizer effect is and the higher the relative fertilizer price is.
Avoid direct flushing. The secondary dilution method should be adopted to ensure uniform fertilization and improve fertilizer utilization. According to the characteristics of continuous absorption of nutrients by crops, the loss of leaching caused by one-time large-scale fertilization is reduced. The amount of water-soluble fertilizer per acre is between 3 and 6 kg. should.
Drip irrigation. When grasping details of drip fertigation, drip water first, and then start fertilizing after the pipes are filled with water. The longer the fertilization, the better. Immediately after the completion of fertilization, water is dripped for 20 to 30 minutes, and all the remaining fertilizer in the pipeline is discharged. In drip fertigation in the dry season, it is recommended that fertilization be completed within 2 to 3 hours.
Avoid excessive irrigation. Generally, the soil depth can be maintained within 20-40 cm.
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