Edible Mushroom Cultivation Methods and Formula Fertilization Techniques for Flowers

The nutrient content of different flower species varies greatly. Chrysanthemums, poinsettias and carnations have high nutrient requirements, while geraniums and roses have relatively low nutrient requirements. Most flowers prefer nitrate nitrogen. The N:P:K ratio needed for normal growth and development of flowers is about 1:0.2:1, but it differs slightly among flower types; the suitable N:P:K ratio for foliage plants is 4:0.1:5.

Nutrient supply not only affects the growth and development of flowers, but also affects flower color and ornamental value. Carbon, hydrogen, oxygen and nitrogen are components of various color-developing macromolecular compounds. Changing their supply will change flower color. For example, excessive nitrogen or an increased supply of carbohydrates will fade the red color of flowers, and when nitrogen is deficient, blue autumn chrysanthemums appear light blue or even white. Phosphorus and potassium can shift the cool colors of cool-toned flowers toward cooler colors; increasing potassium makes the blue of blue-toned flowers more brilliant and bluer, and the flowers fade less easily. For red warm-toned flowers, increasing potassium makes the flower color redder and less prone to fading.

When flowers are deficient in iron and manganese, the red color fades and is prone to fading. When magnesium, molybdenum and uranium are insufficient, the cool colors of cool-toned flowers will turn gray or white, and the colors will not be vivid. For example, spraying molybdenum and copper on yellow roses makes their color bright, and applying magnesium fertilizer to green flowers makes their green more vivid.

Flower fertilizers must have complete nutrients, slow release and no odor, be based mainly on organic fertilizers, and be applied as topdressing at the right time; the specific fertilizer amount should be determined according to the flower species.