Method for prolonging ornamental period of new shoots of cinnamomum camphora and increasing linalool content

Abstract

The invention relates to a method for prolonging the ornamental period of a new shoot of cinnamomum camphora and increasing the linalool content. The method comprises the following steps: after a forest for cinnamomum camphora oil is put into production, spraying 0.50-1.85 mmol.L <-1 > methyl jasmonate once after the overground part of a plant is harvested every year and before shoot extraction in spring; or spraying 0.50-1.85 mmol.L <-1 > methyl jasmonate twice before sprouting in spring in a cinnamomum camphora ornamental forest, a leisure forest or a healthy forest; the method provided by the invention can promote sprouting and leaf expansion, prolong the ornamental period of new shoots of cinnamomum camphora, and improve the relative content of linalool in mature leaves. The spraying amount is 50-100 mL for each plant each time. The growth rate of the yield of branches and leaves of the cinnamomum camphora plants is 13-23%, the relative content of linalool in the branches and leaves of the cinnamomum camphora is increased by 11-22.3%, the sprouting time is advanced by 5-10 days, and the coloring and viewing time of new shoots is prolonged by 5-10 days; not only can the yield of branches and leaves of cinnamomum camphora be increased, but also the coloring viewing period of new shoots is greatly prolonged, and benefits can be improved by attracting and renewing people to keep healthy and leisure.

Description

Technical Field

[0001] The invention relates to a method for prolonging the viewing period of new shoots of camphora and increasing the content of linalool. Background Art

[0002] Cinnamomum camphora Cinnamon camphor (L.)J. Presl) is a genus of the Lauraceae family (Lauraceae) Cinnamon ) is a tree with a long history of cultivation and utilization in my country. It is a precious tree species unique to my country. It is mainly produced in the south of the Yangtze River and the southwest. Its wood is high-quality, grows rapidly, and is insect-resistant and rot-resistant. It has a strong ability to absorb smoke and dust, and conserve water resources. It is not only an ideal material for precious furniture, shipbuilding, carving, etc., but also an excellent street tree and garden shade tree; in addition, its roots, stems and leaves can also be used to extract essential oils and camphor. In short, camphor has many values ​​such as timber, medicine, chemical industry, fragrance, and landscaping. It is a very important economic tree species. According to the main components of the essential oil, the camphor tree that mainly contains linalool is called fragrant camphor ( C. camphora var. linaloolifera Linalool is the most widely used and consumed fragrance in the world (Chen Shangying et al., 2013). With the increasing demand for natural linalool, people have established a high-yield cultivation model for camphor dwarf forests. The yield of camphor branches and leaves per unit area has increased significantly, but the linalool content of its branches and leaves is basically stable, which is determined by the basic properties of its varieties. Therefore, people continue to explore the screening of high-yield and high-quality varieties in production, and at the same time study the application of different chemical fertilizers and organic fertilizers to increase the yield of branches and leaves; no one has studied how to increase the relative content of linalool, a fragrant volatile substance in branches and leaves, under the same variety and the same cultivation conditions, so as to improve the quality of essential oil from branches and leaves, which is a major demand of the current camphor oil business. At the same time, as people pursue forest rest, forest health care, and forest tourism, making full use of the spectacle of the new shoots of large areas of camphor oil forests, ornamental forests, or leisure forests changing from red or light yellow to green to attract people to rest, recuperate, and travel consumption is also an important problem or bottleneck that must be overcome for the efficient and sustainable development of aromatic camphor. Among them, how to prolong the viewing period of new shoots of aromatic camphor and the relative content of linalool in branches and leaves is the most critical technology. Summary of the invention

[0003] The purpose of the present invention is to provide a method for prolonging the viewing period of new shoots of camphor tree and improving the content of linalool, which can increase the relative content of linalool in camphor tree branches and leaves by 10%-22.3%, promote early sprouting and prolong the viewing period of new shoots by 5-10 days.

[0004] The object of the present invention is to achieve the following method: a method for extending the viewing period of new shoots of camphor and increasing the content of linalool, which comprises spraying 0.50-1.85 mmol·L of linalool after the above-ground parts of the plants are harvested and before the shoots are drawn in spring after the camphor oil forest is put into production. -1Methyl jasmonate is sprayed once to promote shoot growth and leaf expansion, prolong the viewing period of new shoots of camphor trees, and increase the relative content of linalool in mature leaves. The spraying amount is 50-100 mL per plant each time.

[0005] The above-mentioned method for extending the viewing period of new shoots of camphor trees and increasing the linalool content is to spray 1.75 mmol·L on each tree stump after the above-ground part of the plant is harvested each year after the camphor oil forest is put into production. -1 Methyl jasmonate 50 mL once; spray 1.75 mmol·L before the spring harvest each year -1 Methyl jasmonate 50 mL once.

[0006] The above method for extending the viewing period of new shoots of camphor and increasing the linalool content is to spray 1.75 mmol·L of linalool on the stands that were not harvested in the previous year before the shoots were drawn in spring after the camphor oil forest was put into production. -1 Methyl jasmonate 100 mL twice, each time with an interval of 7 days.

[0007] A method for extending the viewing period of new shoots of camphor trees and increasing the content of linalool, comprising spraying 0.50-1.85 mmol·L of linalool before the shoots emerge in spring in camphor tree ornamental forests, leisure forests or health forests -1 Methyl jasmonate was sprayed twice to promote shoot growth and leaf expansion, prolong the viewing period of new shoots of camphor trees, and increase the relative content of linalool in mature leaves. The spraying amount was calculated based on the crown area, 5-10 mL per square meter each time, with an interval of 7 days.

[0008] The above method for extending the viewing period of new shoots of camphor trees and increasing the content of linalool is preferably spraying 1.75 mmol·L methyl jasmonate -1 , extending the viewing period of the new red leaves of Cinnamomum camphora by 5-7 days. The relative content of linalool in the leaves was the highest, 1.55 times higher than that of the unsprayed control.

[0009] The above method for extending the viewing period of new shoots of camphor trees and increasing the linalool content comprises spraying 1.75 mmol·L methyl jasmonate after pruning or crown shaping of camphor trees. -1 It can promote the early emergence of new shoots and extend the viewing period of the new red leaves of camphor tree by 5-7 days. The relative content of linalool in the leaves is the highest, which is 1.55 times higher than that of the unsprayed control.

[0010] By using the above method to prolong the viewing period of new shoots of camphor tree and increase the content of linalool, the growth rate of branch and leaf yield of camphor tree plants is 13%-23%, the relative content of linalool in branches and leaves of camphor tree is increased by 11%-22.3%, the shoot growth time is advanced by 5-10 days, and the viewing period of new shoot color change is extended by 5-10 days; spraying methyl jasmonate 1.75 mmol·L -1The growth rate of the branches and leaves yield of camphor trees is about 23%, the relative content of linalool in the branches and leaves of camphor trees increases by about 22.3%, the shoot emergence time is advanced by 5-10 days, and the color change viewing time of the new shoots is extended by 5-10 days. Therefore, this method can not only increase the yield of camphor trees branches and leaves, but also greatly increase the color change viewing period of the new shoots, which can attract people to rejuvenate and relax and improve the benefits.

[0011] The present invention will be further described below in conjunction with embodiments. Example Example 1

[0012] A method for extending the viewing period of new shoots of camphor trees and increasing the content of linalool, comprising spraying 0.50-1.85 mmol·L of linalool after the above-ground parts of the plants are harvested each year and before the shoots are produced in spring after a camphor oil forest is put into production. -1 Methyl jasmonate is sprayed once to promote shoot and leaf expansion, extend the viewing period of new shoots of camphor, and increase the relative content of linalool in mature leaves. The spraying amount is 50-100 mL per plant each time. The growth rate of branch and leaf yield of camphor plants is 13%-23%, the relative content of linalool in camphor branches and leaves is increased by 11%-22.3%, the shoot time is advanced by 5-10 days, and the viewing period of new shoots changing color is extended by 5-10 days; it can not only increase the yield of camphor branches and leaves, but also greatly increase the viewing period of new shoots changing color, which can attract new people to improve health and leisure and improve benefits.

[0013] Example 2

[0014] As in Example 1, after the camphor oil forest was put into production, 1.75 mmol·L was sprayed on each tree stump after the above-ground part of the plant was harvested each year. -1 Methyl jasmonate 50 mL once; spray 1.75 mmol·L before the spring harvest each year -1 Methyl jasmonate 50 mL once.

[0015] Example 3

[0016] As in Example 1, after the camphor oil forest was put into production, the forest stands that had not been harvested in the previous year were sprayed with 1.75 mmol·L -1 Methyl jasmonate 100 mL twice, each time with an interval of 7 days.

[0017] Example 4

[0018] A method for extending the viewing period of new shoots of camphor trees and increasing the content of linalool, comprising spraying 0.50-1.85 mmol·L of linalool before the shoots emerge in spring in camphor tree ornamental forests, leisure forests or health forests -1Methyl jasmonate was sprayed twice to promote shoot and leaf expansion, extend the viewing period of new shoots of camphor, and increase the relative content of linalool in mature leaves. The spraying amount was calculated according to the crown area, 5-10 mL per square meter each time, with an interval of 7 days. The growth rate of branch and leaf yield of camphor plants was 13%-23%, the relative content of linalool in camphor branches and leaves increased by 11%-22.3%, the shoot time was advanced by 5-10 days, and the viewing period of new shoots changing color was extended by 5-13 days; it can not only increase the yield of camphor branches and leaves, but also greatly increase the viewing period of new shoots changing color, which can attract new people to improve health and leisure and improve benefits.

[0019] Example 5

[0020] As in Example 4, after pruning or crown shaping of camphor trees, 1.75 mmol·L methyl jasmonate may be preferably sprayed. -1 It can promote the early emergence of new shoots and extend the viewing period of the new red leaves of camphor tree by 5-13 days. The relative content of linalool in the leaves is the highest, which is 1.55 times higher than that of the unsprayed control.

Claims

1. A method for extending the viewing period of new shoots of camphor trees and increasing the content of linalool, characterized in that After the camphor oil forest is put into production, spray 0.50-1.85 mmol·L each year after the above-ground parts of the plants are harvested and before the spring harvest. -1 Methyl jasmonate is sprayed once to promote shoot growth and leaf expansion, prolong the viewing period of new shoots of camphor trees, and increase the relative content of linalool in mature leaves. The spraying amount is 50-100 mL per plant each time.

2. A method for extending the viewing period of new shoots of Cinnamomum camphora and increasing the content of linalool according to claim 1, characterized in that After the camphor oil forest was put into production, 1.75 mmol·L was sprayed on each tree stump after the above-ground parts of the plants were harvested each year. -1 Methyl jasmonate 50 mL once; spray 1.75 mmol·L before the spring harvest each year -1 Methyl jasmonate 50 mL once.

3. A method for extending the viewing period of new shoots of Cinnamomum camphora and increasing the content of linalool according to claim 1 or 2, characterized in that After the camphor oil forest is put into production, the stands that have not been harvested in the previous year should be sprayed with 1.75 mmol·L -1 Methyl jasmonate 100 mL twice, each time with an interval of 7 days.

4. A method for extending the viewing period of new shoots of camphor trees and increasing the content of linalool, characterized in that For ornamental camphor trees, leisure forests or health forests, spray 0.50-1.85 mmol·L before the spring harvest. -1 Methyl jasmonate was sprayed twice to promote shoot growth and leaf expansion, prolong the viewing period of new shoots of camphor trees, and increase the relative content of linalool in mature leaves. The spraying amount was calculated based on the crown area, 5-10 mL per square meter each time, with an interval of 7 days.

5. A method for extending the viewing period of new shoots of Cinnamomum camphora and increasing the content of linalool according to claim 4, characterized in that Preferably, 1.75 mmol·L of methyl jasmonate is sprayed -1 , extending the viewing period of the new red leaves of Cinnamomum camphora by 5-7 days. The relative content of linalool in the leaves was the highest, 1.55 times higher than that of the unsprayed control.

6. A method for extending the viewing period of new shoots of Cinnamomum camphora and increasing the content of linalool according to claim 4 or 5, characterized in that After pruning or crown shaping of camphor trees, spraying 1.75 mmol·L of methyl jasmonate is preferred. -1 It can promote the early emergence of new shoots and extend the viewing period of the new red leaves of camphor tree by 5-7 days. The relative content of linalool in the leaves is the highest, which is 1.55 times higher than that of the unsprayed control.