Management of pollution-free apples for growing apples

We fruit growers should realize the development direction of pollution-free apple production at present and in the future. We should focus on applying organic fertilizer. The principles of applying organic fertilizer are: first, to improve the content of organic matter in orchard soil; second, to combine organic fertilizer with inorganic fertilizer. It is necessary to control nitrogen, stabilize phosphorus and increase potassium. Scientific and timely total nutrition fertilization; third, it is the supplement of trace elements.

(1) to establish a fertilization system based on organic fertilizer to promote the formation of soil aggregate structure in orchards. After the application of organic fertilizer in the orchard, it can be transformed into organic matter under the action of microorganisms, and further form a special black sticky substance, humus. Humus can be combined with soil particles to make the scattered soil particles bond with each other. Thus forming aggregates, large and small. It can enhance the fertilizer and water conservation capacity of the soil, thus receiving the transfer of water with fertilizer. The purpose of storing water with fertilizer and saving water with fertilizer.

(2) to provide a variety of nutrients for fruit trees. Organic fertilizer contains all kinds of nutrients for the growth of fruit trees. In the process of organic matter transformation, in addition to the formation of humus, another way is the mineralization process, which can turn all kinds of nutrients which can not be absorbed and utilized by fruit trees into feed nutrients. Such as nitrogen? Phosphorus? Potassium? Sulphur? Calcium? Magnesium? Iron? Boron? Zinc is released for absorption by fruit trees.

(3) to promote microbial activities. Organic matter is an indispensable source of energy for soil microbial activities. The application of organic fertilizer is beneficial to the reproduction of microorganisms and enhance their activity so as to promote the decomposition of organic matter and enrich soil nutrients.

(4) help to overcome the deficiency of elements. To improve photosynthesis, organic acids and carbon dioxide can be produced in the process of organic matter decomposition, and organic acids can change the pH of soil.

(5) after applying organic fertilizer to the orchard, the soil grain structure was improved, the nutrient content in the soil was enriched, and the absorption and utilization of fruit trees were promoted. The tree grows healthily and enhances its activity. Can reduce chemical fertilizer? The use of pesticides can improve the quality and yield of fruits. It greatly enhances the ability of the tree to resist adverse environment and diseases and insect pests, and the amount of chemical fertilizers and pesticides. Reducing environmental and fruit pollution, maintaining ecological balance and producing pollution-free apples play a very important role.