What are the kinds of irrigating fertilizer? What should you pay attention to when using it?

What are the kinds of irrigating fertilizer? What should you pay attention to when using it? Please guide that there are many varieties of flushing fertilization, which can be divided into three types in terms of chemical properties and nutritional composition: first, inorganic type, such as urea, potassium dihydrogen phosphate, high calcium type, high potassium type, etc.; second, organic type, such as amino acid type, humic acid marine biological type, etc.; third, microorganisms, such as yeast type, etc. In recent years, the variety of compound flushing fertilizer has developed rapidly, which can basically be divided into two categories, one is the compound preparation produced by scientific processing and compounding of organic, inorganic, biological and other raw materials. The other is the compound irrigation and fertilization of organic and inorganic liquids made of organic and inorganic materials scientifically. The application of only one of these new compound preparations can meet the needs of crops for a variety of elements. In the scientific use of flushing fertilization, we must pay attention to the following points: first, it is necessary to correctly select the variety of fertilizer. Flushing fertilization is by no means as simple as "fertilizer flushing with water". It must be selected according to different crops, such as urea or ammonium nitrate when planting vegetable crops that require more nitrogen. Second, the method of use should be appropriate. Before applying flushing fertilizer, the solid fertilizer should be dissolved with water to make mother liquor, and then flushed with water. For some crops such as shallow cultivated vegetables or inconvenient soil fertilization, the prepared fertilizer can be flushed with water, and the amount of water should be controlled in the process to ensure that nutrients are evenly distributed in the field. Third, the amount and concentration of fertilizer should be reasonable. If the dosage is too large and the concentration is too high, it is easy to produce toxic and harmful gases such as ammonia, nitrogen oxide and hydrogen sulfide, resulting in crop poisoning. In addition, do not directly spread solid flushing fertilizer in the field and then irrigate, because it is easy to cause uneven fertilizer distribution, or even burn seedlings. After irrigation and application of fertilizer and water, the soil should be ploughed and loosened in time, and the effect is better. Fourth, compound irrigation and fertilization containing microbial preparation types should be kept in a cool place to avoid sun exposure and excessive hot flashes, and should not be mixed with fungicides. If caking, you can continue to use, do not affect the fertilizer efficiency. Click to get more water-soluble fertilizer application techniques