Fertilizer products can be divided into solid fertilizer, liquid fertilizer and gas fertilizer according to their state.Because there are very few gaseous fertilizers, what we usually see are solid and liquid fertilizers.Traditional fertilizers are usually solid, in the form of pellets or powders.With the development of fertilizer industry, more and more liquid fertilizers can be used by irrigation and spraying, which is more conducive to rapid absorption of plants. Today, we will talk about the types and advantages and disadvantages of liquid fertilizers.
We hereby declare that the liquid fertilizers mentioned in this article are mineral fertilizers or organic mineral fertilizers and do not include liquid organic fertilizers.
1.According to the way plants absorb.
Root-borne liquid fertilizer: This liquid fertilizer is applied through the soil to the roots of the plant and is taken up by the plant and can be used as base or topdressing.
Liquid fertilizer absorbed by leaves: Liquid fertilizer absorbed by leaves at an advanced stage of plant growth.These fertilizers are usually low in nitrogen and contain free amino acids and other micronutrients such as boron, molybdenum, sulfur, and macardium potassium, which are used to help plants flower and set fruit.Some liquid fertilizers applied to leaves also contain organic matter, so they are called organic mineral fertilizers.
2.Classification by state of existence
Suspension or mixed solution: a form of fertilizer in which the solid fertilizer is uniformly dispersed in the liquid as particles but not dissolved.Liquid fertilizers in this state have a risk of uneven dispersion and sedimentation, so they require constant agitation.
Solution: common liquid fertilizers exist in the form of solution, is the solid completely dissolved in the liquid state, very uniform, according to the different concentration may have different pH changes.
There are usually two ways to use liquid fertilizers. First, spray, which can be done using equipment normally used for pesticide spraying.Second, irrigation, water and fertilizer integration equipment can be used for irrigation and fertilization.It can be done by sprinkler or drip irrigation.
Spray or water - fertilizer integration irrigation fertilization?For details about how to use the product, you need to refer to the product instructions and use the product carefully according to its use and characteristics.
For the roots of liquid fertilizer, can be directly applied to the roots of plants, but can be by irrigation fertilization, but needs to be diluted to the smallest concentration, because often the roots of the salinity of the fertilizer is very high, is likely to be corrosion irrigation equipment, if adopt the way of drip irrigation fertilization also may jam the drip irrigation,In addition, the form of drip irrigation requires high concentration and dosage.
For liquid fertilizers absorbed by leaves, spray fertilizers can be used, even with other pesticides, but care should be taken to ensure compatibility between products to avoid mutual reaction, precipitation, or loss of effectiveness.You can also use liquid foliar fertilizer with irrigation equipment, but drip irrigation allows the fertilizer to reach the roots of the plant and be absorbed through the roots.
First, the advantages:
1. Rapid absorption: Compared with solid fertilizers, liquid fertilizers are more easily absorbed by plants and have high absorption and utilization speed.
2. Uniformity: Compared with solid fertilizers, liquid fertilizers are relatively uniform when used properly.There will be no overfertilizing of a site with solid fertilizer.
3. Low labor cost: If it can be used with irrigation or spraying, it can save labor cost.
1. Price: Usually liquid fertilizer is more expensive than solid fertilizer, especially liquid fertilizer for foliar is more expensive in the market.
2. Salinity: Due to the high salinity of liquid fertilizers, damage to application equipment is likely.At the same time, high salinity at high temperature, especially when foliar fertilizer is used, may also cause burns to plant leaves.
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