Blue hydrangea specialized fertilizer and preparation method thereof

Abstract

The invention relates to the field of hydrangea planting specialized fertilizer, in particular to blue hydrangea specialized fertilizer and a preparation method thereof so as to solve the problem about reasonable fertilization on hydrangea. The proportion of the fertilizer is as follows: 1), the pH value of the fertilizer is 4.5-5.5; 2), the form of nitrogen is: nitrate nitrogen and ammonium nitrogen, wherein ammonium nitrogen / total nitrogen is greater than or equal to 40%; 3), phosphorus is water-soluble phosphorus, and the proportion of phosphorus to nitrogen is 15% is smaller than or equal to P2O5 / N smaller than or equal to 35%; 4), the ratio of potassium to nitrogen is 1.5 is smaller than K2O / N smaller than or equal to 3.5; 5), the content of chelating-state aluminum in the fertilizer is 0.5%-2.0% of that of nitrogen. The blue hydrangea specialized fertilizer is balanced in nutrient structure and reasonable in application, vegetative growth of plants is healthy, downy mildew and powdery mildew are relatively light, flower balls subjected to treatment are large in diameter, 5.9% of the diameter is increased by comparison, and the flower balls are high in quality and yield.

Description

technical field [0001] The invention relates to the field of fertilizers for hydrangea planting, in particular to a special fertilizer for blue hydrangeas and a preparation method thereof. Background technique [0002] Hydrangeas are native to the provinces south of the Yangtze River Basin in my country, and are mostly used as potted plants in the north. They are subtropical tree species. In Yunnan, Guangdong and other places, they are mostly evergreen shrubs, while in slightly colder regions, they are mostly deciduous and dormant. Hydrangeas mostly grow in valleys and forests and stream slopes. They like warm and humid climate conditions, like half shade, and have poor cold tolerance. Intolerant to drought, avoid direct sunlight. [0003] Generally speaking, in the natural state of hydrangea, the white varieties are greenish at first, then turn white, turn blue when encountering acid, and turn red when encountering alkali. The color of hydrangea is controlled by delphini...

AI Technical Summary

Problems solved by technology

The fertilizers currently on the market can only ensure that the hydrangea turns blue, but the purity of the blue color is not enough or it is white. The commercialized hydrangea is a fresh-cut flower, and its commodity value mainly lies in the diameter of the flower bulb and the purity of the flower color. During the fertilization process, the ingredients in the fertilizer are well controlled, so that the hydrangea maintains the purity of the flower color. However, after the current hydrangea is planted, the center of the flower ball may have a high purity of blue, but the surrounding petals are still white, and even show mixed colors. color, leading to a decline in the quality of hydrangea flower balls and affecting the economic benefits of flower farmers

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