Principle of nutrient balance of fertilizers for growing organic vegetables
Application of organic fertilizer in planting organic vegetables in the field in the air
As we all know, the environmental conditions needed for the growth and development of crops, in addition to sunlight, temperature, oxygen and water, the most important thing is mineral nutrition, no matter how powerful organic vegetable planting technology is no exception. At present, it has been confirmed that there are 16 kinds of nutrient elements necessary for crop growth and development, including carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, sulfur and magnesium. Crops absorb a large amount of these elements, accounting for more than 0.010% of the fresh weight in crops; trace elements include iron, manganese, chlorine, boron, zinc, copper and molybdenum. Crops absorb less than 0.009% of the fresh weight in crops.
Application of organic fertilizer in planting organic vegetables in the field in the air
The normal metabolism of plants requires the relative balance of various nutrient elements, and the imbalance will lead to metabolic confusion and physiological disorders. All kinds of essential nutritional elements of crops have their special nutritional effects in the body, and when they are lacking, they will affect various physiological and biochemical processes, and when they are lacking to a certain extent, they will show certain symptoms in appearance; on the contrary, if the surplus will also produce specific symptoms, there are different degrees of pathological characteristics, called physiological diseases, affecting yield and quality. When engaged in vegetable production in the organic vegetable planting base, the above mineral nutrients, except carbon, hydrogen and oxygen, are mainly supplied by water and carbon dioxide, while other nutrients are mainly supplied by soil and organic fertilizer.
Application of organic fertilizer in planting organic vegetables in the field in the air
Although soil organic matter accounts for only a small part of the total soil weight, it is one of the important indicators of soil fertility. The important reason is that soil organic matter contains nitrogen, phosphorus, potassium, trace elements and other nutrients needed by vegetables. With the gradual decomposition of soil organic matter, these nutrients can be continuously released for the growth of vegetables. In addition, organic matter can also improve soil water permeability, water storage, aeration, fertilizer preservation and vegetable root growth environment by affecting soil physical, chemical and biological properties, and then improve soil fertility and soil tillage.
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