What kind of fertilizer is water-soluble fertilizer? How to use water-soluble fertilizer with good effect?
The water-soluble fertilizer realizes the integration of water and fertilizer, improves the efficiency of fertilization, and reduces the total amount of fertilization; its fertilizer effect is rapid, and it effectively solves the nutritional needs of the rapid growth period of crops. So, what kind of fertilizer is water-soluble fertilizer? How to use water-soluble fertilizer for good effect? What are the precautions for use? Let's take a look together below.
What kind of fertilizer is water-soluble fertilizer?
Water-soluble fertilizer is a kind of quick-acting fertilizer, which can be quickly dissolved in water without residue, and can be directly absorbed and utilized by the roots and leaves of crops.
It can be used in facility agriculture such as spray irrigation to realize the integration of water and fertilizer, the effective absorption rate is more than double that of ordinary fertilizer, and the fertilizer efficiency is fast, which can solve the nutrient needs of high-yield crops during the rapid growth period.
Combined with the spray drip irrigation system, the water requirement is only 30% of the ordinary fertilizer, and the fertilization operation can almost be done without labor, which greatly saves the cost.
Water-soluble fertilizers generally have few impurities, low conductivity, convenient concentration adjustment, and safe use for seedlings.
How to use water-soluble fertilizer for good effect?
1. Choose fertilizers according to irrigation facilities
Generally, drip irrigation requires less than 0.2% of water-insoluble matter, micro-sprinkler irrigation water-insoluble matter less than 5%, and sprinkler irrigation water-insoluble matter less than 15%, and the requirement for sprinkling irrigation is even lower. Generally, the lower the water-insoluble content of the macro-element water-soluble fertilizer, the better the fertilizer efficiency and the higher the relative fertilizer price.
2. Avoid direct flushing
It is necessary to adopt the secondary dilution method to reduce the leaching loss caused by a large amount of fertilization at one time. The appropriate amount of water-soluble fertilizer per mu is 3-6 kg each time.
3. Grasp the details of drip irrigation and fertilization
When fertilizing by drip irrigation, drip clean water first, and start fertilizing after the pipe is filled with water.
4. Avoid excessive irrigation
Generally, keep the soil moist within 20-40 cm depth.
5. About mixing
Try to use it alone or in combination with non-alkaline pesticides to prevent metal ions from reacting to produce precipitation, causing leaf fertilizer or phytotoxicity.
6. Pay attention to nutrient balance
If the formula of water-soluble fertilizer is not balanced, it will affect crop growth. When choosing fertilizer, it should be used together with water-soluble fertilizer with trace elements.
7. Prevent the accumulation of surface salt
Long-term use of drip irrigation in greenhouses or greenhouses will cause the accumulation of surface salt and affect the growth of roots. Drip irrigation under the film can be used to inhibit salt migration to the surface.
Precautions for use
Water-soluble fertilizer is easily diluted by water, so do not use it before it rains. When it rains after use, you need to re-fertilize within 6 hours after the rain stops. Before using water-soluble fertilizer, you need to use it according to the specific growth of the crop. When sowing It is best not to use water-soluble fertilizers.