Citrus coloring and sweetening composition and application

Abstract

The invention belongs to the field of citrus cultivation, and particularly relates to a citrus coloring and sweetening composition and application. The coloring and sweetening composition for oranges and tangerines comprises the following main components: ethychlozate and galactopyranoside, wherein the mass ratio of ethychlozate to galactopyranoside is 2: (1-4). By compounding the ethychlozate and the galactopyranoside, the test result shows that early coloring of oranges can be promoted, acid regurgitation of the oranges after single ethychlozate is applied can be prevented, the average sugar content of the oranges can be increased, no negative influence is caused to the growth of the oranges, no pollution is caused to the environment, and the method can be widely applied to planting and production of different varieties of the oranges in different areas.

Description

Technical Field

[0001] The invention belongs to the field of citrus cultivation, and particularly relates to a citrus coloring and sweetening composition and application thereof. Background Art

[0002] Citrus is a plant of the Rutaceae family and the genus Citrus. It is a labor- and technology-intensive agricultural product with significant market competitive advantages, large domestic and foreign demand growth, and a large development space. Citrus is the world's largest fruit category and the third largest traded agricultural product, and occupies a very important position in the international agricultural product trade. There are about 140 countries and regions in the world that produce citrus, mainly distributed in warm and humid areas south of the northern latitude. Guangxi Zhuang Autonomous Region is the largest production area in my country. Citrus has high nutritional value and significant medicinal and health functions, and is very popular in the domestic and foreign fruit markets.

[0003] In recent years, China's citrus fruit has developed rapidly, with the cultivated area, production volume and per capita consumption increasing continuously. Some industrialized production bases for citrus fruit have been formed, and there is a good foundation for accelerated development. The scale of exports has also increased significantly. However, there are also problems such as variety degeneration, quality decline, and unreasonable varieties and maturity periods. Therefore, improving the quality of citrus fruit plays a vital role in the future development of citrus.

[0004] Research data shows that indole esters can promote the coloring of citrus, increase soluble solids, and improve the quality of fruit. The test results show that after spraying indole esters on citrus trees, citrus will color about seven days earlier, but citrus fruits will have acid regurgitation. How to ensure that citrus fruits color early while preventing acid regurgitation has become a research focus. Summary of the invention

[0005] The object of the present invention is to provide a citrus coloring and sweetening composition, so as to solve the problem that the use of indole esters to promote citrus coloring may cause acid regurgitation.

[0006] The second object of the present invention is to provide the application of the above-mentioned citrus coloring and sweetening composition in citrus cultivation, so as to solve the problem of how to promote citrus coloring and prevent citrus acid reflux.

[0007] In order to achieve the above first purpose, the technical solution adopted by the present invention is:

[0008] A citrus coloring and sweetening composition, the main components of which are indole ester and thiazolinone, wherein the mass ratio of the indole ester to the thiazolinone is 2:(1-4).

[0009] The present invention is a pioneering invention. By compounding indole ester and thiamethoxam, test results show that it can promote early coloring of citrus, prevent acid reflux of citrus after a single dose of indole ester is applied, and can also increase the average sugar content of citrus, and has no negative impact on the growth of citrus and no pollution to the environment. The present invention can be widely used in the planting and production of different citrus varieties in different regions.

[0010] Preferably, the mass ratio of the indole ester to the amine ester is 2:(1-2).

[0011] In order to achieve the above second purpose, the technical solution adopted by the present invention is:

[0012] The citrus coloring and sweetening composition is used in citrus cultivation. The citrus coloring and sweetening composition is sprayed on citrus trees to promote citrus coloring, prevent acid regurgitation, and increase sugar content.

[0013] Spraying citrus trees with the citrus coloring and sweetening composition does not affect the coloring of citrus, but can effectively prevent citrus acid regurgitation, increase the sugar content of citrus, significantly improve the quality of citrus, and enhance the competitiveness of citrus in the market.

[0014] Preferably, the spraying concentrations of indole ester and thiamethoxam in the citrus coloring and sweetening composition are both 50-200 mg / L.

[0015] More preferably, the spraying concentration of indole ester in the citrus coloring and sweetening composition is 100 mg / L, and the spraying concentration of amine ester is 50-100 mg / L.

[0016] Preferably, the spraying time is before the coloring stage.

[0017] Preferably, the citrus fruits include oranges and mandarin oranges. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The colored pictures of the orange before and 7 days after the medication in Example 4 of the present invention;

[0019] Figure 2 The colored pictures of the citrus fruit treated with medication for 14 days and 28 days in Example 4 of the present invention;

[0020] Figure 3 These are colored pictures of the mandarin oranges before and after 7 days of medication in Example 5 of the present invention;

[0021] Figure 4 These are colored pictures of mandarin oranges that were treated with medication for 14 days and 28 days in Example 5 of the present invention. DETAILED DESCRIPTION

[0022] The amine ester is diethylaminoethanol octanoate malate, which can be prepared according to the method recorded in the Chinese invention patent with authorization announcement date of March 22, 2024 and authorization announcement number CN 113754550 B.

[0023] The present invention uses treatment tests of a single dose of indole ester, a single dose of thiazolinone, and a combination of indole ester and thiazolinone to prove that indole ester and thiazolinone are a group of high-efficiency agricultural compositions suitable for citrus cultivation, can enhance the coloring effect of indole ester, prevent acid regurgitation when a single dose of indole ester is used, and increase the sugar content of citrus products.

[0024] The following will be combined with the embodiments to clearly and completely describe the concept of the present invention and the technical effects produced, so as to fully understand the purpose, characteristics and effects of the present invention. The methods used in the embodiments are conventional methods unless otherwise specified; the materials, reagents, etc. used can be obtained from commercial channels unless otherwise specified. In the following embodiments, "%" is mass fraction unless otherwise specified.

[0025] 1. Specific embodiments of the citrus coloring and sweetening composition of the present invention

[0026] Example 1

[0027] The citrus coloring and sweetening composition of this embodiment is composed of indole ester and thiazolinone, and the mass ratio of indole ester to thiazolinone is 2:1.

[0028] Example 2

[0029] The citrus coloring and sweetening composition of this embodiment is composed of indole ester and thiazolinone, and the mass ratio of indole ester to thiazolinone is 1:1.

[0030] Example 3

[0031] The citrus coloring and sweetening composition of this embodiment is composed of indole ester and thiazolinone, and the mass ratio of indole ester to thiazolinone is 1:2.

[0032] When the citrus coloring and sweetening composition of the above embodiment is used, the indole ester and the amine ester can be applied to the citrus tree separately, or made into a multifunctional preparation in a conventional manner, so as to achieve multiple functions such as promoting citrus coloring, preventing acid regurgitation, and sweetening through one application. On the basis of the above main ingredients, conventional auxiliary materials (such as preservatives, etc.) can be further added to make agricultural preparations in a conventional manner.

[0033] 2. Specific examples of the application of the citrus coloring and sweetening composition in citrus cultivation

[0034] Example 4 Coloring and sweetening test of maogu tangerine in Chongzuo, Guangxi

[0035] The test period: the early stage of coloring of the orange. The early stage of coloring refers to the period when the orange just begins to turn yellow, and the coloring index is generally 3% to 12%.

[0036] Preparation of indole ester solution: dilute 15% indole ester emulsifiable concentrate with water to three concentrations of 50 mg / L, 100 mg / L, and 200 mg / L for use.

[0037] Preparation of amine ester solution: dilute 15% amine ester soluble solution with water to a concentration of 200 mg / L for use.

[0038] Indole ester + thiazolin compound treatment: Mix 15% indole ester emulsifiable concentrate and 15% thiazolin soluble concentrate in a certain proportion, calculate the dilution multiple according to the required concentration, and use after dilution according to the dilution multiple.

[0039] Water was used as a blank control for the above treatments.

[0040] The whole experiment is divided into the following steps:

[0041] Fruit determination: Select the mandarin orange trees whose growth meets the conditions for drug application, select 5 clusters of fruit on the sunny side and shady side of the same citrus tree, hang signs and take photos, randomly select 6 fruits from each tree to measure the initial sugar content data, and select 5 trees for each drug concentration as parallel treatment.

[0042] Use of medicine: Spray the diluted indole ester, thiamethoxam and their mixture evenly on the leaves and fruit surfaces of citrus trees, spraying 3L of solution on each tree.

[0043] Investigation: The first investigation was conducted 7 days after the application of the drug. The fruits of each tree were photographed, the coloring index was investigated, and 6 fruits were randomly selected to measure the sugar content data to observe the sweetening effect. The second and third investigations were conducted 14 and 28 days after the application of the drug, and the investigation indicators were the same as the first one.

[0044] Sugar content: Use a handheld sugar meter to measure the soluble solids content in citrus fruits and display it as a percentage.

[0045] Coloring index: An index or grade is used to express the percentage of the colored area of ​​the fruit to the surface area (the percentage of the colored area of ​​each tree with fixed-fruit citrus is calculated by averaging 5 trees for each treatment). It is an important indicator of the appearance quality of the fruit and one of the standards for measuring fruit maturity.

[0046] The results of the coloring index and sugar content of the orange at different stages after the application of the drug are shown in Table 1 and Table 2 respectively. Figure 1 , Figure 2 shown.

[0047] Table 1 Questionnaire for coloration index at different stages after application of pesticides to citrus aurantium

[0048]

[0049] As shown in Table 1, the coloring index of the orange treated with a single dose of indole ester was significantly higher than that of the CK blank control, and the effect of 100 mg / L concentration was better. The treatment of indole ester combined with amine ester had no adverse effect on the coloring effect of orange, and was slightly better than the coloring effect of the single dose treatment.

[0050] Table 2 Survey of sugar content in different periods after medication of citrus aurantium

[0051]

[0052] The test results are shown in Table 2. The sugar content of the oranges treated with a single dose of indole ester was significantly higher than that of the CK blank control treatment 7 days after treatment. The three single-dose treatments were significantly better than the blank control treatment, among which the 100 mg / L treatment showed the best effect. The sugar content after 14 days of treatment did not increase but decreased compared with that after 7 days of treatment, indicating that spraying indole ester in the short term can increase the sugar content of oranges. Oranges will experience acid reflux 7-14 days after treatment, and the acid reflux situation will improve when investigated on the 28th day, but the sugar content has no advantage over the blank control.

[0053] The sugar content of mandarin oranges treated with blank control, single dose of thiamethoxam and combination of indole ester and thiamethoxam increased steadily over time. Compared with the blank control, single dose of thiamethoxam also had a certain sweetening effect but it was not significant.

[0054] According to the data in Table 2, the sugar content in the treatment of indole ester combined with amine ester increased steadily over time, which was significantly better than the CK blank control treatment and each single-dose treatment. Among them, the (100+100) mg / L compound treatment had the best effect, indicating that the indole ester combined with amine ester can not only solve the problem of acid reflux in mandarin oranges that occurs in the later stage of indole ester single-dose medication, but also further increase the sugar content. Compared with the blank control, the sugar content is 1-2 points higher on average.

[0055] Example 5: Coloring and sweetening test of mandarin oranges in Wuming County, Nanning, Guangxi

[0056] The test was carried out and the dosage was the same as in Example 5.

[0057] The results of the coloring index and sugar content of Wogan at different stages after drug treatment are shown in Table 3 and Table 4 respectively. Figure 3 , Figure 4 shown.

[0058] Table 3 Questionnaire on coloration index at different stages after treatment of Wogan

[0059]

[0060] As shown in Table 3, the coloring index of Wogan treated with a single dose of indole ester was significantly higher than that of the CK blank control, and the effect of 100 mg / L concentration was better. The treatment of indole ester combined with amine ester had no adverse effect on the coloring effect of Wogan.

[0061] Table 4 Survey of sugar content in Wogan at different stages after medication

[0062]

[0063]

[0064] The test results are shown in Table 4. The sugar content of the oranges treated with a single dose of indole ester was about 1 point higher on average than the CK blank control 7 days after the drug was applied. The treatment with a higher concentration was better, among which the 100 mg / L treatment showed the best effect. The sugar content after 14 days of drug application was lower than that after 7 days of drug application, indicating that acid reflux will occur 7-14 days after spraying indole ester on oranges. The acid reflux situation will improve when investigated on the 28th day, but the sugar content has no advantage over the blank control.

[0065] The sugar content of mandarin oranges treated with blank control, single-dose thiamethoxam and combination of indole ester and thiamethoxam gradually increased over time, and no acid reflux occurred.

[0066] According to the data in Table 4, the sugar content of the treatment with indole ester combined with amine ester increased steadily over time, which was significantly better than the CK blank control treatment and each single-dose treatment. Among them, the (100+100) mg / L compound treatment had the best effect, indicating that the indole ester combined with amine ester can solve the problem of citrus acid reflux that occurs in the later stage of indole ester single-dose medication, and the sugar content is about 1 point higher than the blank control on average.

[0067] The above experiments show that the combination of indole ester and amine ester can effectively prevent citrus acid regurgitation, increase the sugar content of citrus, significantly improve the quality of citrus, and enhance the competitiveness of citrus in the market. This compounding technology is safe to use and has no side effects. It can be widely used in citrus planting of different regions and varieties. It can play an important role in the production and application of citrus and is of great significance to the production of agricultural products.

[0068] The present invention is further described above in conjunction with the embodiments. Those skilled in the art should be able to understand that, without departing from the concept of the present invention, the specific parameters in the above embodiments may be changed or modified to form multiple specific embodiments, which are all within the common variation range of the present invention and will not be described one by one here.

Claims

1. A citrus coloring and sweetening composition, characterized in that: The main components are indole ester and thiazolinone, and the mass ratio of the indole ester to the thiazolinone is 2:(1-4).

2. The citrus coloring and sweetening composition according to claim 1, characterized in that The mass ratio of the indole ester to the amine ester is 2:(1-2).

3. Use of the citrus coloring and sweetening composition according to claim 1 or 2 in citrus cultivation, characterized in that: Spraying the citrus coloring and sweetening composition on citrus trees can promote citrus coloring, prevent acid regurgitation and increase sugar content.

4. The use according to claim 3, characterized in that The spraying concentrations of indole ester and amine ester in the citrus coloring and sweetening composition are both 50-200 mg / L.

5. The use according to claim 4, characterized in that The spraying concentration of indole ester in the citrus coloring and sweetening composition is 100 mg / L, and the spraying concentration of amine ester is 50-100 mg / L.

6. The use according to claim 3, 4 or 5, characterized in that: The spraying time is before coloring.

7. The use according to claim 6, characterized in that The citrus fruits include oranges and mandarin oranges.

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