Special apple fertilizer and fertilizing method

Abstract

The invention belongs to the technical field of soil fertilizers, and particularly relates to a special fertilizer for apples, and a fertilizing method thereof. The special fertilizer for apples has acore-shell structure, wherein the inner core is prepared from components including resin coated urea and ammonium polyphosphate, the shell is prepared from components including seaweed extract and acomposite microbial agent, the composite microbial agent is prepared from trichoderma and bacillus subtilis in a mass ratio of (0.5-2):(1-2), and the mass ratio of the resin coated urea to the ammonium polyphosphate to the seaweed extract to the composite microbial agent is (10-50):(1-20):(1-5):(0.1-1). The special fertilizer for apples has fertilizer particles with a shell-core structure, the number of soil bacteria can be increased, propagation of harmful fungi is inhibited, plant diseases and insect pests in soil are relieved, the yield, the single-fruit weight gain and the soluble sugar content are remarkably increased, and the quality of apples is improved; and the cost is greatly reduced while the utilization rate of the fertilizer is increased.

Description

technical field [0001] The invention belongs to the technical field of soil fertilizers, and in particular relates to a special fertilizer for apples and a fertilization method thereof. Background technique [0002] In addition to the necessary nitrogen, phosphorus and potassium, the commercially available special fertilizers for apple trees usually also contain components such as medium and trace elements, binders, and fungicides to meet the nutritional needs of apple tree growth, try to avoid the occurrence of diseases, and increase yields. and fruit weight etc. [0003] According to the survey, the average organic matter content of orchard soil is usually less than 10g / kg at present, which leads to excessive reliance on chemical fertilizers and neglect of organic fertilizers in fertilization technology; however, the actual utilization rate of chemical fertilizers in orchards is only 30% to 45%. Therefore, in order to ensure the yield and quality of apples, we must Increa...

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Problems solved by technology

[0003] According to the survey, the average organic matter content of orchard soil is usually less than 10g / kg at present, which leads to excessive reliance on chemical fertilizers and neglect of organic fertilizers in fertilization technology; however, the actual utilization rate of chemical fertilizers in orchards is only 30% to 45%. Therefore, in order to ensure the yield and quality of apples, we must Increasing the amount of fertilizer application or increasing the frequency of fertilization will not only bring a great economic burden to fruit farmers, but also further damage the soil environment

[0005] However, based on the growth characteristics of apple trees, the existing compound fertilizers with multiple effects for crops (such as 201910476707.2 patent application) are not ideal after being applied to apple trees, and it is difficult to take into account the problems of increased yield, single fruit weight gain, and increased soluble sugar content At the same time, it is easy to cause a large amount of fertilization or increase the frequency of fertilization due to low fertilizer utilization rate, which will lead to an increase in cost

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