What is irrigating fertilizer? How do I use it?

What is irrigating fertilizer? What are the kinds of irrigating fertilizer? What are the characteristics of flushing fertilization? What should be paid attention to in the application of flushing fertilizer? Please also ask the netizens who know to help introduce that with the progress of agriculture in our country, agriculture is gradually developing in the direction of labor-saving, labor-saving, high-efficiency and energy-saving, so there are many kinds of rush fertilization on the market, but farmers don't know much about it. So the farming network has sorted out the principles, types, benefits, application methods and key points for attention, which are listed in detail for netizens' reference. What is flushing fertilization: generally speaking, flushing fertilization is a kind of fertilizer applied with irrigation. it can be large and medium amount of element fertilizer (such as nitrogen, phosphorus, potassium, calcium, magnesium, etc.). It can also be trace element fertilizer (such as zinc, manganese, iron, molybdenum, copper, boron, etc.). Impulse fertilization is welcomed by farmers because of its outstanding advantages, such as easy to use, easy to absorb crops, good fertilizer efficiency and so on. The types of flushing fertilization: the varieties of flushing fertilization can be divided into liquid barrel and solid powder bag according to their physical properties. In terms of chemical properties and nutritional composition, it can be divided into three types: type 1, inorganic type, such as potassium dihydrogen phosphate, urea, high calcium type, high potassium type, etc.; species 2, organic type, such as amino acid type, humic acid marine biological type, etc.; species 3, microbial types, such as enzyme bacteria, etc. The new type of compound irrigation and fertilization can 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 organic-inorganic liquid compound irrigation and fertilization, which is scientifically prepared from organic and inorganic materials. The outstanding advantages of these new types of compound fertilizer are: the long-term effect of organic fertilizer, the quick effect of inorganic fertilizer, the stable effect of biological fertilizer and the efficiency of microbial fertilizer. The use of this kind of fertilizer can meet the needs of crops for a variety of nutrient elements. The benefits of using flushing fertilization: first, there are generally no negative effects after the use of flushing fertilization, so when selecting the raw materials of flushing fertilization, they generally choose good water solubility, nutrients are easy to be absorbed, are not easy to be fixed by the soil, and do not consolidate the soil. Non-toxic residual fertilizer. Second, the use of flushing fertilization is convenient, labor-saving, labor-saving, and flushing fertilization is not limited by soil conditions and crop growing season, easy to apply, and not easy to damage crops. Third, the fertilizer effect of impulse fertilization is rapid, which is conducive to crop yield increase. For example, in the vigorous season of crop growth, when topdressing with common methods, fertilizer nutrients are often released and transformed slowly, and the fertilizer effect is late, which affects the yield and quality. Especially when crops are cultivated in greenhouse in winter, the effect of conventional soil topdressing is often not ideal because of low temperature, lack of sunshine and so on. Therefore, the effect is very good when the varieties of high quality flushing fertilizer are selected and applied with water. Fourth, there are many nutrients in impulse fertilization, and the general use of impulse fertilization is to choose compound fertilizer containing a variety of nutrients, which can not only meet the needs of crops for a variety of nutrients, but also meet the needs of the future development direction of fertilizer and the intensive development of modern agriculture. The use technology of flushing fertilization: step 1, choose the regular fertilizer variety. For example, when the soil nitrogen supply is insufficient and the green leafy vegetables that need more nitrogen can be planted, urea or ammonium nitrate can be chosen; if nitrogen, phosphorus and potassium are deficient, ternary compound fertilizer or potassium dihydrogen phosphate, diammonium phosphate and other fertilizers can be selected. Step 2, before using flushing fertilizer, the solid chemical fertilizer should be hydrated and made into mother liquor, and then flushed with water. If solid organic fertilizer is used, retting and soaking should be carried out about 10 days in advance, and the juice should be flushed and applied with water after ripening. For some shallow root vegetables and other crops, or inconvenient soil topdressing, the prepared fertilizer can be flushed with water, and the amount of water should be controlled to ensure the uniform distribution of nutrients; for some deep-root crops, if trees, cucumbers, tomatoes and so on, before use, the fertilizer should be diluted to an appropriate multiple, and then applied into the hole or ditch, and then poured into the appropriate amount of water, to be covered with soil after water infiltration. If the solid chemical fertilizer is directly sprinkled into the field, it will cause uneven distribution of fertilizer in the field, damage crops in places where the concentration of fertilizer is too high, and cannot meet the needs of crops in places where the concentration of fertilizer is too low. It will also cause a lot of waste of fertilizer. Step 3, the dosage and concentration of flushing fertilization should be reasonable. If the dosage and concentration of flushing fertilization are too large and the concentration is too high, it is easy to produce poisonous gases such as ammonia, nitrogen oxide and hydrogen sulfide, causing crop poisoning; if the dosage is too small and the concentration is too low, it can not meet the needs of crops and can not achieve the purpose of increasing production. In general, during normal watering and flushing, the amount of solid fertilizer per unit area can be used as 120% of the amount of conventional soil topdressing. For the special flushing fertilizer sold in the market, it should be used according to the attached instructions, and do not use it at will, so as not to affect the effect and cause unnecessary losses. The main points of application of impulse fertilization: first, because impulse fertilization is generally applied in the greenhouse in winter, and during this period, due to weak solar light, low temperature, low activity of active bacteria in soil, underdeveloped plant roots and other reasons, will cause poor fertilizer absorption. Therefore, to improve the root activity of crops and increase the growth of plant roots is a necessary role of rush fertilization. Therefore, we should choose the irrigation fertilizer with good rooting effect, which can promote root activity, promote root growth, increase fertilizer absorption, and make fertilizer efficiency fast, high and long. Point 2, the use of flushing fertilizer, should be a small number of times to apply fertilizer. For greenhouse crops, because mainly rely on watering, so watering should be diligent, so that a small amount of fertilizer can be applied many times, such as cucumber, eggplant and other eggplant fruits can be washed every stubble. Point 3, some fertilizers can not be mixed and flushed, otherwise the effect will be reduced, or there will be no effect. For example, carbon and ammonia cannot be mixed with strongly acidic fertilizers, and phosphoric acid fertilizers should be fully chelated when mixed with zinc, manganese, iron, copper and so on. What is the selection method of Water-soluble Fertilizer with large amount of elements