Method for improving quality of cut flower of gerbera by utilizing CO2

Abstract

The invention discloses a method for improving quality of a cut flower of gerbera by utilizing CO2. A timed and quantitative enriching technology of the CO2 is adopted, a nitrogenous fertilizer using measure is combined, and the interaction of the carbon-nitrogen metabolism is utilized, so that the flowering time of the gerbera is advanced, the diameter of the flower is enlarged, the number of the flower in a single plant is increased, the color of the flower is deepened, the consistency of the flower is good, the vase life of the cut flower is prolonged, the method is suitable for the gerbera planted by a conventional method in a green house, gerbera in different cultivars and different growth periods, the production cost is reduced, and besides, the generation of the greenhouse effect is avoided.

Description

technical field [0001] The present invention relates to a plant CO 2 Fertilization techniques, especially involving the use of CO 2 Methods for improving the quality of cut gerbera flowers. Background technique [0002] Gerbera jamesonii (Gerbera jamesonii) is a perennial herbaceous flower of the genus Gerbera in the Compositae family. It is also known as Gerbera and Gerbera. It is native to South Africa and is also distributed in a small amount in Asia. It was introduced to China in the mid-1980s. Gerbera blooms every year , can be used as cut flowers or potted flowers. It has the characteristics of large and colorful flowers, rich colors, and can produce flowers in all seasons. It has high ornamental value. It has become the fifth largest fresh cut flower in the world. Therefore, it is deeply loved by consumers. As a cut flower, gerbera has some unsatisfactory problems: mainly low lignification, easy drooping flower heads, easy bending and breaking of flower stems, etc.,...

AI Technical Summary

Problems solved by technology

[0002] Gerbera jamesonii (Gerbera jamesonii) is a perennial herbaceous flower of the genus Gerbera in the Compositae family. It is also known as Gerbera and Gerbera. It is native to South Africa and is also distributed in a small amount in Asia. It was introduced to China in the mid-1980s. Gerbera blooms every year , can be used as cut flowers or potted flowers. It has the characteristics of large and colorful flowers, rich colors, and can produce flowers in all seasons. It has high ornamental value. It has become the fifth largest fresh cut flower in the world. Therefore, it is deeply loved by consumers. As a cut flower, gerbera has some unsatisfactory problems: mainly low lignification, easy drooping flower heads, easy bending and breaking of flower stems, etc., which seriously affect its viewing value

Gerbera is C 3 For plants, the phenomenon of photosynthetic lunch break is very obvious. The research on the photosynthetic characteristics of gerbera shows that the diurnal change of the net photosynthetic rate (Pn) of its leaves shows an obvious double-peak phenomenon, and the first peak appears at 9:00-10:00 in the morning , is the highest value of the whole day, after which Pn gradually weakens, and a "lunch break" phenomenon appears around 14:00; the second peak appears around 16:00, but it is 22.6% lower than the Pn of the first peak; in addition, the gerbera CO 2 The saturation point is about 1600μmol·mol -1 , in the traditional protected cultivation environment, the CO in the atmosphere 2 The concentration is 400μmol·mol -1 , far from satisfying the gerbera on CO 2 In the process of plant photosynthesis, carbon metabolism and nitrogen metabolism are two very important elements. Photosynthetic carbon metabolism provides energy and carbon frame for nitrogen metabolism, and nitrogen metabolism provides necessary enzymes, proteins and other organic substances for carbon metabolism. , the two are interdependent, compete with each other, and are closely connected. Whether the two can achieve an ideal degree of coordination is an important condition that affects the quality of flower viewing. In the past, pure CO 2 There are some insufficient reasons for the promotion effect of the enrichment method on the growth and development of gerbera, which is related to the CO 2 Enrichment without considering the effect of carbon-nitrogen metabolism

How can CO be utilized in the production of gerbera 2 At the same time of enrichment method, it will not produce "greenhouse effect", and can combine carbon-nitrogen metabolism to achieve the effect of shortening the harvesting and cutting period, increasing the harvesting quantity, improving the quality of harvested and cut flowers, and prolonging the viewing period of harvested and cut flowers. effect, there have been no relevant reports so far

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