Fertilization must take into account the soil, because: First, fertilization is only required when the soil is insufficiently supplied to a nutrient, and it is not necessary to apply all necessary elements to the soil. Because most nutrients provide sufficient nutrients, it can cause waste and even cause crop poisoning. This is sometimes overlooked. Second, there will be some changes in the fertilizer after it is applied to the soil, which will affect the fertilizer effect to varying degrees. Without considering the soil, there is no real rational fertilization. If nitrate fertilizer is applied in paddy fields, it will inevitably reduce fertilizer efficiency. It is necessary to reasonably match the proportion of inorganic fertilizers and trace elements. For example, organic fertilizer and inorganic fertilizer are suitable for 7:5 or 6:5; nitrogen, phosphorus and potassium are suitable for 1:0.5-0.6:0.25-0.3; micro-fertilizer varies with different crops, such as: cotton and rapeseed application Boron fertilizer, zinc fertilizer applied to wheat and Corn, molybdenum fertilizer applied to legume crops, micro-fertilizers such as boron, zinc, copper and iron in melon and orchard have the functions of improving stress resistance, increasing yield and improving quality. To determine the optimal amount of fertilizer. Through the soil test, based on the principle of what is missing in the soil and how much is needed, the basic balance between crop fertilizer and soil fertilization is achieved. To master the best time for fertilization. Generally, the principle of light, medium and heavy after the implementation is implemented, so that the crops are not too fat in the early stage, not long in the middle stage, and not de-fertilized in the later stage. It is necessary to improve the fertilization method. Organic fertilizers are used as base fertilizers, and nitrogen fertilizers in inorganic fertilizers should be applied in depth. The depth of fertilization should be 12-15 cm. Phosphorus, potassium and micro-fertilizers should be used for full-layer fertilization in the past, that is, 2/3 of the fertilizer dosage should be turned over. Sprinkle on the ground, plough up and then spread 1/3 of the fertilizer on the hoe, and then fully spread the fertilizer to evenly distribute the fertilizer in the plough layer to achieve the goal of improving fertilizer utilization. Nitrogen fertilizer Common fertilizers include urea, ammonium sulfate and ammonium nitrate. They are the main source of fertilizer for the supply of available nitrogen and one of the main elements of plant protein synthesis. Method: It can be formulated into a solution with a concentration of less than 0.1% when used. Too much will cause the plants to dehydrate and die. Phosphate fertilizer Calcium superphosphate and phosphate rock are one of the sources of phosphorus, which contribute to flower bud differentiation, strengthen plant roots, and increase plant cold resistance. Their fertilizer efficiency is slower. Method: It is rarely used in potted flowers. The phosphorus in flower cultivation is often obtained by applying compound phosphate fertilizer. When superphosphate is used as top dressing, add water 50-100 times first, soak it for a day and night and then take the above clear liquid to water. Potash Method: Potassium is the main element of the ash of plants. Potassium can enhance the resistance and disease resistance of plants and is one of the indispensable elements of plants. Commonly used potassium fertilizers are potassium chloride and potassium sulfate, which can be formulated into a solution with a concentration of less than 0.1%. Compound fertilizer There are many types of compound fertilizers, and it refers to chemical fertilizers containing three elements of nitrogen, phosphorus and potassium or two of them. Common potassium dihydrogen phosphate, Russian compound fertilizer, diammonium, etc., can be formulated into an aqueous solution having a concentration of 0.1|0.2% at the time of topdressing. Various fertilizer manufacturers have also introduced some flower-specific fertilizers. Methods: such as special fertilizer for foliage flowers, special fertilizer for woody flowers, special fertilizer for herbal flowers, special fertilizer for acid soil flowers, special fertilizer for cactus and special fertilizer for bonsai. It is available in the flower market and can be used according to the instructions. Trace element Trace elements need less dosage during plant development. Under normal circumstances, the trace elements contained in the soil are sufficient for the growth of flower plants, but some plants exhibit chlorosis and plaque due to the lack of trace elements during the growth process. Methods: For example, the iron deficiency in flowers showed chlorosis; the boron deficiency showed that the apical buds stopped growing, the plants were dwarfed, and the leaf shape became smaller; zinc deficiency showed chlorosis and lobular disease. Application concentration: the spraying concentration of boron fertilizer is 0.1%-0.25%, the spraying concentration of zinc fertilizer is 0.05-0.2%, the spraying of molybdenum fertilizer is 0.02%-0.05%, and the spraying concentration of iron fertilizer is 0.2%-0.5%. Manganese fertilizer spraying concentration is 0.05%-0.1% This article URL: Fertilization Notes What are the techniques for agricultural planting and fertilizing? FD Super Sweet Corn, Frozen Dried Corn Grains, Freeze Dried Corn, FD Corn Grains, Frozen Dried Grains Jiangsu Tiankang Food Co., Ltd. , https://www.tiankangfood.com