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The total nutrient content of water-soluble fertilizers is above 50%, and contains a variety of medium and trace elements. Compared with general compound fertilizers, it has comprehensive nutrition, is completely soluble in water, and has high absorption and utilization rate. Combined with these characteristics of water-soluble fertilizers, the majority of farmers should master certain skills in application.
First of all, do not directly apply the method of applying compound fertilizer, but take the "second dilution" method. The author interviewed that some farmers directly applied water-soluble fertilizers according to the practice of applying general compound fertilizers. As a result, the fertilizers were uneven. The vegetables with large amount of fertilizer had roots and yellow leaves, and vegetables with less fertilizer. The growth is affected. The water-soluble fertilizer has higher nutrient content than the general compound fertilizer, and the dosage is small. Generally, 8 to 10 kg can be used for the mu. It is recommended that the farmer can make a punching bucket in advance, and set a switch at the bottom of the bucket. Before the fertilizer is poured, the water soluble fertilizer is melted in the flushing bucket, the fertilization amount is calculated, the switch is opened, and the fertilizer solution is poured along the watering. In addition, the farmer can directly use the electric sprayer as a container for the diluted fertilizer solution to perform the manure. The purpose of the second dilution of the fertilizer is to ensure uniform fertilizer and improve fertilizer utilization.
Secondly, the application of water and fertilizer should pay attention to the application rate. Fertilizer application has the characteristics of concentrated fertilizer, high utilization rate and less fertilizer. In the interview, the author found that many farmers were not sure about the amount of water-soluble fertilizer used in the hole. As a result, there was a situation of burning roots and burning seedlings. Therefore, the application of water soluble fertilizer must pay attention to the application rate, such as Fang Run (20:20:20) water soluble fertilizer, 3 ~ 5 grams of points should be applied, and should be mixed with the soil and then planted.
Finally, when spraying water-soluble fertilizers, try to use them alone or in combination with non-alkaline pesticides. In the case of vegetable crops with deficiency or root growth, many farmers use water soluble fertilizer to spray to relieve. The author suggests that farmers should spray water-soluble fertilizers as much as possible, or mix them with non-alkaline pesticides to prevent metal ions from reacting to produce sediment, causing leaf damage or phytotoxicity.
In recent years, fully water-soluble fertilizers (referred to as water-soluble fertilizers) have been recognized and accepted by more and more farmers as a new type of fertilizer, and have been widely applied to greenhouse vegetables. However, the author found in the interviews in the countryside that many farmers used water-soluble fertilizers in a wrong way. As a result, they spent money to buy fertilizers, but they did not use them.
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