How to apply trace element fertilizer to fruit trees

Trace element fertilizer (referred to as micro-fertilizer) refers to fertilizers containing various micro-nutrient elements necessary for crops, such as boron fertilizer, manganese fertilizer, copper fertilizer, zinc fertilizer, molybdenum fertilizer, iron fertilizer, and chlorine fertilizer. With the rapid development of fruit industry in China, the phenomenon of micronutrient imbalance in fruit trees is increasing. Therefore, the scientific application of trace element fertilizer has become an important way to improve fruit yield, especially to improve fruit quality. This issue of scientific fertilization manuscripts is aimed at combing the relevant knowledge of fruit tree micro-element fertilizer application, and hopes to help fruit farmers produce high-quality fruit.

The main function of micronutrients

Although the amount of micronutrients required by fruit trees is small, the physiological functions are important. Most micronutrients are components of certain enzymes; micronutrients can actively participate in the metabolism of carbohydrates and proteins in plants. Participate in the synthesis of chlorophyll, stabilize chlorophyll; participate in the redox reaction in crops; promote biological nitrogen fixation.

Principle of application

According to the soil micronutrient abundance and fruit tree species application. Under normal circumstances, when the effective content of trace elements in soil is low, it is easy to produce deficiency syndrome, so the principle of what is missing should be adopted to achieve the desired effect. In addition, different fruit tree types have different sensitivity to micro-fertilizer, and their requirements are different. It is necessary to apply symptomatic according to the location and performance characteristics of the deficiency syndrome.

Application method

Soil fertilization: Only when the soil is seriously deficient in trace elements, the micro-fertilizer is applied to the soil. If the application is uneven, the concentration of local soil micro-fertilizer is too high, which is easy to cause fertilizer damage. Generally used as base fertilizer and seed fertilizer, combined with soil preparation before planting, or mixed with nitrogen, phosphorus, potassium and other chemical fertilizers, the application amount should be determined according to the type of crops and micro-fertilizers, generally not excessive. The application of micro-fertilizer in soil has an aftereffect, and can be applied once every 3 to 4 years.

Foliar application: The soluble micro-fertilizer is formulated into a certain concentration of aqueous solution to spray the fruit trees. At the same time, it can be sprayed several times according to the specific needs in different development stages of the crop to improve the fertilizer efficiency.

Application precautions

Note that the application amount and concentration of crops require very little trace elements, and the range from moderate to excessive is very narrow, so it is necessary to prevent excessive use of micro-fertilizer. The soil must be applied evenly when applied, otherwise it will cause fruit tree poisoning and pollute the soil and the environment.

Attention to improve the soil environment conditions, the lack of trace elements, often not because of the low content of trace elements in the soil, but its low effectiveness, by adjusting soil conditions, such as soil pH, soil texture, organic matter content, soil water content, etc., can effectively improve Soil micronutrient nutrition conditions.

Note that the application of trace elements and nitrogen, phosphorus, potassium and other nutrients in combination with a large number of elemental fertilizers are equally important and irreplaceable. Only when the plants meet the needs of a large number of elements, the application of trace element fertilizers can fully exert the fertilizer effect. A significant increase in production.

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