How is the effect of foliar fertilization? How should I use it?

How is the effect of foliar fertilization? How should I use it? Please introduce the method of spraying fertilizer solution to make plants obtain nutrient elements through leaves, which is called foliar fertilization. For the purpose of foliar absorption, the nutrients needed by crops are directly applied to the foliar fertilizer, which is called foliar fertilizer. In recent years, with the development of fertilization technology, foliar fertilization, as a fertilization measure to enhance crop nutrition and prevent some nutrient deficiency diseases, has been rapidly promoted and applied. Practice has proved that foliar fertilization is one of the fertilization techniques with rapid fertilizer efficiency, high fertilizer use efficiency and low fertilizer consumption. Foliar fertilization can make nutrients enter the body directly from the leaves and participate in the metabolism of crops and the synthesis of organic matter, so it is more rapid and effective than soil fertilization. Therefore, it is often used as an effective measure for the timely treatment of crop deficiency. During fertilization, spraying and supplementary application can be carried out by stages according to each growth period of crops, seedling conditions and the actual situation of soil fertilizer supply, so as to give full play to the characteristics of rapid response of foliar fertilizer, so as to ensure the normal growth and development of crops under suitable fertilizer and water conditions. to achieve the goal of high yield and high quality. However, only with the correct application of foliar fertilization technology, can the effect of foliar fertilizer on increasing yield and income be brought into full play. Therefore, the problems that should be paid attention to in the use of foliar fertilization are as follows: the concentration of foliar fertilization is directly related to the effect of spraying, if the solution concentration is too high, it is easy to burn crop leaves after spraying; the solution concentration is too low, which not only increases the workload, but also can not meet the requirements of supplementary crop nutrition. Therefore, in the application, it should be prepared according to local conditions because of fertilizer and different crops. Choose the appropriate spraying method: the preparation of the solution should be uniform, the spray point should be even and fine, and the spraying times should be needed. When we master foliar fertilization during the spraying period, according to the demand for nutrient elements in different growth and development stages of various crops, we should choose the most urgent time to spray crop nutrient elements in order to achieve the best effect. Choose the appropriate spraying time: the effect of foliar fertilization is directly related to temperature, humidity and wind. Foliar spraying is best before 9: 00 a.m. when there is no wind, cloudy days or high humidity and low evaporation. It is most suitable to carry out after 4: 00 p. M., if it rains 3-4 hours after spraying, supplementary spraying is needed. Select the appropriate spraying site: due to the different metabolic activity of the upper, middle and lower leaves and stems of the plant, the ability to absorb external nutrients is quite different, so the appropriate spraying site should be selected. Add auxiliaries: when spraying fertilizer solution on the leaves, add auxiliaries appropriately to improve the adhesion of fertilizer liquid on plant leaves and promote the absorption of fertilizer. Combined with soil fertilization: because the root has a larger and more perfect absorption system than the leaf, it takes more than 10 times of foliar fertilization to reach the total amount of nutrients absorbed by the root for large amounts of nutrient elements such as nitrogen, phosphorus and potassium. Therefore, foliar fertilization can not completely replace the root fertilization of crops, and must be combined with root fertilization. Click to get more foliar fertilizer application methods