A composition for increasing sugar content and / or yield in sugar cane

Abstract

The present application relates to the technical field of sugarcane planting, in particular to a composition for increasing sugar content and / or yield of sugarcane. The composition obtained by compounding chitosan oligosaccharide, boric acid and potassium dihydrogen phosphate at a suitable concentration can promote sugar accumulation in the early and middle stages of the process maturation period of sugarcane, increase the sugar content of sugarcane stalks, promote the emergence of ratoon cane in the next year, and the emergence is 10-15 days earlier than the control without spraying the sugar-increasing and yield-increasing promoter, the effective stems are increased, the yield is increased, and the influence caused by drought and low temperature environment can be resisted, so that the yield increase and sugar accumulation increase are more significant. The effect of increasing sugar content and yield of sugarcane can be achieved by using only once, and the composition has the advantages of small dosage, good effect, no toxic and side effects on people, no toxic and side effects on sprayed plants, no problem of causing seedling burning and alcohol fermentation.

Description

Technical Field

[0001] This invention relates to the field of sugarcane cultivation technology, and in particular to a composition for increasing sugar content and / or increasing sugarcane yield. Background Technology

[0002] Sugarcane is a high-efficiency, low-carbon dioxide compensation point, and high-yield sugar crop, making it an important pillar industry of modern agriculture in Guangxi. Every part of sugarcane is valuable: its leaves are excellent feed for cattle and sheep; its stalks produce sugar and are a raw material for ethanol; its bagasse is an environmentally friendly raw material for paper production; and its molasses wastewater can be used to produce soy sauce and other food seasonings.

[0003] Sugarcane breeding and high-yield cultivation techniques are relatively mature, but a bottleneck restricting high yields and high sugar content remains. Generally, high-sugar varieties yield less sugarcane under the same cultivation conditions than other varieties, while high-yielding varieties tend to have lower sugar content, creating a conflict between sugar mills and sugarcane farmers. Even sugarcane varieties with high sugar content often struggle to reach their genetically determined sugar content due to factors such as low temperatures, drought, and inadequate fertilizer use. In particular, the low sugar content during the early to mid-stages of sugarcane's processing maturity leads to a delayed crushing season, coinciding with the Spring Festival. While farmers celebrate the holiday, sugar mills must shut down to await raw sugarcane supplies, resulting in significant losses for the mills. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a composition for increasing sugar content and / or yield in sugarcane. The composition provided by this invention not only solves the problem of low sugar content in the early and middle stages of sugarcane maturity but also promotes sugar content to reach the genetic level of the variety, facilitating timely start and stop of sugar mill operations. This benefits winter crop planting and early spring field management, achieving a win-win situation of high sugar content and high yield in sugarcane, benefiting both sugar mills and sugarcane farmers.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The present invention provides a composition for increasing sugar content and / or increasing sugarcane yield, the composition comprising the following components at the following concentrations: chitosan oligosaccharide 0.0588 g / L, boric acid 0.9677 g / L and potassium dihydrogen phosphate 1.2859 g / L.

[0007] Preferably, the molecular weight of the chitosan oligosaccharide is 1700-2000 Da.

[0008] The present invention also provides the use of the composition described in the above-described technical solutions in one or more of the following aspects, including:

[0009] 1) Increase sugar content in sugarcane; 2) Increase sugarcane yield; 3) Promote early germination of ratooned sugarcane; 4) Promote the growth and development of ratooned sugarcane.

[0010] Preferably, the method of application of the composition includes foliar spraying.

[0011] Preferably, the spraying includes one or more of manual spraying, spraying with other equipment, and spraying by drone.

[0012] Preferably, the spraying area is the area 1.5 to 2.5 m above the sugarcane canopy.

[0013] Preferably, the dosage of the composition is 200 mL / acre.

[0014] Preferably, the composition is applied at the sugarcane's processing maturity stage.

[0015] Preferably, the composition is applied during the middle stage of sugarcane processing maturity.

[0016] Preferably, after applying the composition, the timing of cultivation, weeding, and fertilization of ratoon sugarcane in the following year is 10 to 15 days earlier than the sugarcane management time in the local area where the composition was not applied.

[0017] Beneficial effects:

[0018] This invention provides a composition for increasing sugar content and / or yield in sugarcane. The composition comprises the following components at concentrations: 0.0588 g / L chitosan oligosaccharide, 0.9677 g / L boric acid, and 1.2859 g / L potassium dihydrogen phosphate. This invention, through the compounding of chitosan oligosaccharide, boric acid, and potassium dihydrogen phosphate at appropriate concentrations, can promote sugar accumulation in the early to mid-stages of sugarcane maturity, increase the sugar content in sugarcane stalks, promote the emergence of ratooning plants the following year, resulting in earlier and faster growth. Plants emerge 10-15 days earlier than the control group without the application of sugar-increasing and yield-enhancing agents, increasing the number of effective stalks and yield. It can also resist the effects of drought and low temperatures, making the increase in yield and sugar accumulation more significant. A single application can increase sugar content and yield in sugarcane, with advantages such as low dosage, high effectiveness, no toxic side effects on humans or the sprayed plants, and no problems with seedling burn or alcoholic fermentation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0020] Figure 1 and Figure 2 All images show the effect of spraying the composition described in Comparative Example 2;

[0021] Figure 3 A diagram showing the effect of starting to spray the composition described in this invention;

[0022] Figure 4 The image shows the effect after 52 days of spraying the composition described in this invention;

[0023] Figure 5 A photograph of a drone spraying at a height of 2 meters above the sugarcane canopy.

[0024] Figure 6 A photograph of a drone spraying at a height of 1.5m above the sugarcane canopy. Detailed Implementation

[0025] The present invention provides a composition for increasing sugar content and / or increasing sugarcane yield, the composition comprising the following components at the following concentrations: chitosan oligosaccharide 0.0588 g / L, boric acid 0.9677 g / L and potassium dihydrogen phosphate 1.2859 g / L.

[0026] In this invention, the molecular weight of the chitosan oligosaccharide is preferably 1700-2000 Da. The chitosan oligosaccharide used in this invention is preferably purchased from Qingdao Honghai Biotechnology Co., Ltd., Shandong Province. The chitosan oligosaccharide with the appropriate molecular weight provided by this invention can promote the photosynthesis of sucrose in plant leaves. Boric acid facilitates the transport of sucrose from leaves to the stalks and roots. Potassium dihydrogen phosphate contains phosphorus and potassium, which are essential macronutrients for plant growth and development. Foliar spraying results in a leaf absorption and utilization rate of over 80%. By combining chitosan oligosaccharide, boric acid, and potassium dihydrogen phosphate at appropriate concentrations, sugarcane sugar production and yield can be increased.

[0027] The present invention also provides the use of the composition described in the above-described technical solutions in one or more of the following aspects, including:

[0028] 1) Increase sugar content in sugarcane; 2) Increase sugarcane yield; 3) Promote early germination of ratooned sugarcane; 4) Promote the growth and development of ratooned sugarcane.

[0029] In this invention, the application method of the composition preferably includes foliar spraying; the spraying preferably includes manual spraying and / or drone spraying, more preferably drone spraying; the application amount of the composition is preferably 200 mL / acre; when spraying with a drone, it is preferable to dilute 200 mL of the composition to 800 mL before spraying; when spraying manually, it is preferable to dilute 200 mL of the composition with 45 kg of water before spraying; the spraying area is preferably an area 1.5 to 2.5 m above the sugarcane canopy, more preferably an area of ​​2 m.

[0030] This invention selects drones to spray at an appropriate height, which has the advantages of uniform, precise and safe spraying. Selecting an appropriate spraying height can avoid drift caused by factors such as airflow and wind speed, which could affect other crops.

[0031] In this invention, the preferred application time for the composition is during the sugarcane's mature stage, more preferably during the mid-mature stage; the preferred number of applications is once a year. The composition of this invention, used only once a year, can increase sugarcane sugar content and yield, and features low dosage, high effectiveness, no toxic side effects on humans or sprayed plants, and does not cause seedling burn or alcoholic fermentation.

[0032] In this invention, after applying the composition, the timing of tilling, weeding, and fertilization is preferably 10 to 15 days earlier than the local time.

[0033] The composition described in this invention allows sugarcane to be harvested and sent to the sugar factory 25-50 days after foliar spraying, significantly increasing sugar content. The following year, ratoon sugarcane grows earlier and faster, requiring 10-15 days of inter-row cultivation, fertilization, and weeding to suppress excessive tillering, increase stem formation rate, and reduce the occurrence of diseases and pests, thereby increasing sugarcane yield.

[0034] To further illustrate the present invention, the following detailed description, in conjunction with the accompanying drawings and embodiments, describes a composition for increasing sugar content and / or increasing sugarcane yield provided by the present invention, but these descriptions should not be construed as limiting the scope of protection of the present invention.

[0035] Example 1

[0036] A composition for increasing sugar content and / or increasing sugarcane yield, the composition comprising the following components at concentrations: 0.0588 g / L chitosan oligosaccharide, 0.9677 g / L boric acid and 1.2859 g / L potassium dihydrogen phosphate; the solvent of the composition is water.

[0037] Application Example 1

[0038] On December 4, 2021, in a 400-mu sugarcane field in Wuming District, Nanning City, Guangxi Province, using the Guitang 49 sugarcane variety, the composition described in Example 1 was sprayed using a drone. The spraying dosage was 200 mL of the composition described in Example 1 diluted to 800 mL per mu. The sprayed area was 2 meters above the sugarcane canopy (see Example 1). Figure 5 The spraying was done once a year. After spraying, the timing of cultivation, weeding and fertilization in the second year was 10 days earlier than the local traditional time. The above treatment was recorded as the treatment group. At the same time, a control group was set up. The area sprayed with only water was the control group. The spraying amount was 800 mL / mu.

[0039] Thirty days after spraying, samples were taken at three points and the sugarcane breeding and quality analysis laboratory of the Sugarcane Research Institute of Guangxi Academy of Agricultural Sciences was commissioned to determine the sugarcane sucrose content, sugarcane calorie content, reducing sugar content and gravity purity. The average value of the results was taken and the test results are shown in Table 1.

[0040] Table 1. Quality determination results (%) of the treatment group and the control group (sugarcane variety: Guitang 49 early maturing variety)

[0041] Group Sugarcane sucrose Sugarcane hammer weight Reducing sugars Gravitational purity deal with 14.46 19.23 0.10 89.33 Comparison 14.01 18.52 0.12 89.87

[0042] Table 1 shows that the sugar content in the treated group increased by 3.2% compared to the control group. Both the sugar content and sucrose content in the treated group were higher than the control, indicating a higher sugar content (sugarcane sucrose is also an indicator of sugar content). The reducing sugar content showed that the treated group had a higher maturity than the control. These data suggest that spraying with the chitosan oligosaccharide combination solution is beneficial for sugar accumulation in sugarcane and promotes sugarcane ripening.

[0043] In May 2022, the number of tillers in the ratooned sugarcane plants was 67% higher than that in the control. Yield was measured on November 25, 2022. The measured indicators and results are shown in Table 2. At the same time, the sugarcane research group of the College of Agriculture of Guangxi University was commissioned to use an infrared detector to measure the sugar content and fiber content of sugarcane. The results are shown in Table 3.

[0044] Table 2. Yield index measurement results of treatment group and control group (sugarcane variety: Guitang 49 early maturing variety)

[0045] Group Process 1 Process 2 Process 3 Processing the mean Comparison 1 Comparison 2 Comparison 3 Comparison with mean <![CDATA[Effective stems (stems / 58 m 2 )]]> 298 337 308 314 218 236 206 220 Weight of a single stem (kg) 1.19 1.14 1.19 1.17 1.14 1.27 1.04 1.15 Plant height (cm) 258.9 240.9 254.7 251.3 195.3 209.4 200.8 201.7 Yield per mu (tons) 4.10 4.40 4.20 4.23 4.284 3.45 2.51 2.94

[0046] As shown in Table 2, the sugarcane yield increased by 1.29 tons per 667 square meters (mu). Based on a raw sugarcane price of 500 yuan, farmers' income increased by about 650 yuan per mu.

[0047] Table 3. Results of quality index determination (%) for the treatment and control groups.

[0048] Measurement indicators Group 1 2 3 4 5 average Sugarcane sucrose deal with 17.19 17.16 17.29 15.17 15.62 16.49 Sugarcane sucrose Comparison 16.71 17.31 15.12 15.88 15.94 16.19 Sugarcane fiber deal with 9.47 10.03 10.31 10.49 10.32 10.12 Sugarcane fiber Comparison 10.32 9.99 10.63 10.97 10.53 10.49

[0049] As shown in Table 3, even in the second year after spraying (for ratoon sugarcane), the sugar content of ratoon sugarcane increases while the fiber content of the sugarcane stalk decreases, which is beneficial for pressing and reduces mechanical wear. Not only do farmers benefit, but sugar mills also reap the benefits of increased sugar content in the second year.

[0050] Application Example 2

[0051] On November 1, 2021, in a sugarcane field in Fusui County, Chongzuo City, Guangxi Province, the sugarcane variety was Liucheng 05 / 136. The composition described in Example 1 was sprayed using a drone. The spraying amount was 200 mL of the composition described in Example 1 diluted to 800 mL per mu (approximately 0.067 hectares). The spraying area was 2 m above the sugarcane canopy. The spraying was carried out once a year. After spraying, the timing of cultivation, weeding, and fertilization in the second year was 15 days earlier than the local traditional timing. The above treatment was recorded as the treatment group. At the same time, a control group was set up, with the area sprayed with only water as the control group. The spraying amount was 800 mL / mu.

[0052] Samples were taken at three points 20, 30, 40 and 53 days after spraying. The sugarcane quality analysis laboratory of Guangxi Funan Dongya Co., Ltd. was commissioned to determine the sugarcane sucrose content, commercial sugar content, reducing sugar content and sugarcane fiber content. The average value of the results was taken. The test results are shown in Table 4.

[0053] Table 4. Quality determination results (%) of the treatment group and the control group (sugarcane variety Guiliu 05 / 136)

[0054]

[0055] As shown in Table 4, the commercial sugar content of the sugarcane treated was higher than that of the control, while the reducing sugar and sugarcane fiber content were lower in the treatment than in the control. This indicates that the sugarcane quality was improved compared to the control group that was not sprayed with the composition.

[0056] Comparative Example 1

[0057] A composition similar to that of Example 1, except that the chitosan oligosaccharide is replaced with chitosan with a molecular weight of more than 2700 Da (purchased from Qingdao Honghai Biotechnology Co., Ltd., Shandong).

[0058] Comparative Example 2

[0059] A composition similar to that of Example 1, except that chitosan oligosaccharide is replaced with ethephon.

[0060] Comparative Application Example 1

[0061] On November 10, 2019, in a sugarcane field at the Guangxi University Agricultural Science Base in Fusui, Guangxi, the sugarcane variety was Zhongzhe No. 9. The sugarcane was divided into three treatment groups, and the compositions described in Example 1, Comparative Example 1, and Comparative Example 2 were sprayed using a drone. The spraying dosage was 200 mL of the composition diluted to 800 mL per acre. The spraying area was 1.5 m above the sugarcane canopy (see...). Figure 6 The spraying frequency is once a year. After spraying, the timing of cultivation, weeding and fertilization in the second year is 10 days earlier than the local traditional time. At the same time, a control group is set up, with the area sprayed with only water as the control group. The spraying amount is 800 mL / mu.

[0062] Samples were taken at three points 30 and 70 days after spraying, and the sugarcane sucrose content was measured by the sugarcane research group of the College of Agriculture of Guangxi University. The average value of the results was taken and the results are shown in Table 5.

[0063] Table 5 Comparison of sugarcane sucrose content in sugarcane stalks after spraying with different compositions (Zhongzhe No. 9)

[0064] Measurement content Example 1 Comparative Example 1 Comparative Example 2 Spray with clean water Sugarcane sucrose content (30 days) 16.23％ 15.99％ 15.86％ 15.36％ Sugarcane sucrose content (70 days) 16.55％ 15.54％ 16.67％ 15.94％

[0065] As shown in Table 5, the sugar-increasing effect of the compositions provided by the present invention is higher than that of Comparative Example 1, Comparative Example 2 and water spraying treatment.

[0066] In addition, the use of ethephon compositions (Comparative Example 2) easily leads to yellowing of leaves, delayed sugar accumulation, and even sugarcane alcoholic fermentation (see...). Figure 1 Furthermore, ethephon compositions are prone to causing yellowing of leaves (see...). Figure 2 When the chitosan oligosaccharide composition provided by this invention is sprayed, the sugarcane leaves remain green (see...). Figure 3 ), 52 days after spraying the chitosan oligosaccharide composition, the sugarcane leaves were still green during mechanical harvesting (see Figure 4 ).

[0067] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, and not all embodiments. People can obtain other embodiments based on these embodiments without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. The use of a composition for increasing sugar content and yield in various aspects, including: 1) Increase the sucrose content of sugarcane; 2) Increase sugarcane yield; 3) Promotes earlier sapling development in ratoon sugarcane; 4) Promotes the growth and development of ratoon sugarcane; The composition comprises the following components at the following concentrations: chitosan oligosaccharide 0.0588 g / L, boric acid 0.9677 g / L, and potassium dihydrogen phosphate 1.2859 g / L; The molecular weight of the chitosan oligosaccharide is 1700~2000 Da; The application rate of the composition is 200 mL / mu; the application time of the composition is during the sugarcane's processing maturity period; After applying the composition, the timing of cultivation, weeding, and fertilization of ratoon sugarcane in the following year was 10-15 days earlier than that of sugarcane in the local area where the composition was not applied. The composition is applied by foliar spraying.

2. Use according to claim 1, characterized in that, The spraying includes one or more of manual spraying, spraying with other equipment, and spraying by drone.

3. Use according to claim 1, characterized in that, The area to be sprayed is the region 1.5 to 2.5 meters above the sugarcane canopy.

4. Use according to claim 1, characterized in that, The composition is applied during the middle stage of sugarcane processing maturity.

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