Composition and application thereof in plant growth promotion

Abstract

The invention provides a composition and application thereof in plant growth promotion, and the composition is granular and is prepared from corn glume, polyvinyl alcohol, sodium bentonite and water. The composition can be directly applied through a fertilizer throwing machine or applied together with a chemical fertilizer and an organic fertilizer, after application, the plant yield and quality can be improved, the lodging resistance of plants can be improved, the composition especially has a remarkable effect on increasing the yield of crops in arid regions, materials are easy to obtain, the price is low, pollution is avoided, and the composition has important significance on development of the planting industry in China.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plant fertilizer, in particular to a composition and application thereof in plant growth promotion. BACKGROUND

[0002] Drought stress is a major constraint to agricultural production. According to the IPCC Sixth Assessment Report, atmospheric temperature rise, rainfall distribution pattern change and extreme drought will intensify, thus leading to more frequent and more severe drought events in many areas. Under the combined influence of global climate change and high-intensity human activities, drought disasters are showing a trend of frequent and repeated occurrence, and food security, water security and ecological security are facing greater pressure and challenges, which have become one of the important factors restricting economic and social development. In the economic and social development and ecological construction of arid areas, agriculture is the largest water user, and the irrigation water consumption accounts for more than 85% of the total water consumption. Crop yield reduction caused by water shortage has been affecting the development of rural areas at all times, and a technology or means for improving the growth and survival ability of plants in arid areas is urgently needed to solve the above problems. SUMMARY

[0003] The present application provides a composition and application thereof in plant growth promotion, which comprises corn husks, polyvinyl alcohol, sodium bentonite and water. Directly throwing in the soil or applying with fertilizer can effectively improve the growth ability of plants in the corresponding soil, including improving plant yield, enhancing plant stress resistance and increasing chlorophyll content.

[0004] In a first aspect, the present application provides a composition comprising corn husks of corn, polyvinyl alcohol, sodium bentonite and water.

[0005] The method for obtaining the corn husks is not particularly required, and one of the following methods is used: taking a complete corn cob, crushing it, and obtaining corn husks through air separation. The particle size of the corn husks is 2-3 mm.

[0006] The present application finds that corn husks have a strong water absorption capacity, and the tested water absorption amount can reach 1452.5% of the original weight, which is very suitable as a water retention material. The remaining corn cob pieces after crushing can be used as a chemical raw material, an industrial wastewater adsorbent and an edible fungus culture medium, etc., further reducing the cost of corn husks.

[0007] Preferably, the composition comprises, by mass: 16-22 parts of corn husks, 8.3-11.1 parts of polyvinyl alcohol, 8.3-22.2 parts of sodium bentonite, and 44-66 parts of water. The total parts of the composition by mass are preferably 100 parts.

[0008] In a third aspect, the present application provides a product comprising the above-mentioned composition, and the product is a plant growth promoter, a seedling strengthening agent, a fertilizer, a nutrient modifier or an anti-lodging agent.

[0009] In a fourth aspect, the present application provides use of the above-mentioned composition in preparing a plant growth promoter, a seedling strengthening agent, a fertilizer, a nutrition improving agent or an anti-lodging agent.

[0010] In a fifth aspect, the present application provides use of the above-mentioned composition or product in any of the following aspects: (1) plant cultivation.

[0011] (2) plant seedling raising.

[0012] (3) enhancing plant stress resistance, especially anti-lodging.

[0013] (4) increasing plant chlorophyll content.

[0014] (5) increasing plant fruit yield and quality.

[0015] (5) increasing plant fruit yield.

[0016] (6) increasing plant biomass.

[0017] (7) increasing plant flower diameter.

[0018] In an eighth aspect, the present application provides a method for promoting plant growth, comprising incorporating the above-mentioned composition or the composition prepared by the above-mentioned preparation method into the soil where the plant grows.

[0019] Preferably, the method for incorporating the composition or product into the soil comprises strip application, hole application, scattering application, layering application, and mixed application with fertilizer.

[0020] Preferably, the plant in the above-mentioned use is oat, strawberry, watermelon, ornamental flowers, etc.

[0021] Advantages of the present application: (1) The present application provides a composition with plant growth promoting function, which is prepared from corn husks, polyvinyl alcohol, sodium bentonite and water, and has a wide source of raw materials and low cost. The composition itself is easy to apply and environmentally friendly.

[0022] (2) The use of the above-mentioned composition can significantly improve the growth ability of plants. In oat growth experiments, the oat plants treated with the composition of the present application had a plant height and tiller number in the tillering stage that were 35.21% and 51.35% higher than the control, respectively, and the root system development was superior to the control. In the heading stage, the plant height and biomass were 7.6% and 10.8% higher than the control, respectively, and the leaf width and stem diameter were also increased by 11.4% and 3.5%, respectively.

[0023] (3) The application of the above composition can significantly improve the germination and seedling raising ability of plants. In the oat growth experiment, the oat seedlings applied with the composition of the present application had an average increase of 43.98% in plant height, 13.46% in stem diameter, 12.14% in leaf area, and 11.45% in seedling density.

[0024] (4) The application of the above composition can significantly improve the lodging resistance of plants. In the oat growth experiments conducted in two regions respectively, the oats applied with the above composition all showed obvious enhancement of lodging resistance.

[0025] (5) The application of the above composition can significantly improve the chlorophyll content of plants. In the oat growth experiment, the SPAD value of the chlorophyll of the oat leaves applied with the composition of the present application was 71.2, which was 36.9% higher than that of the blank control and 18.7% higher than that of the commercially available environmentally friendly plant growth promoter. This shows that the above composition can increase the chlorophyll content of the leaves and enhance photosynthesis, and the effect is better than that of the similar products on the market.

[0026] (6) The application of the above composition can significantly improve the yield and quality of fruits. In the strawberry and watermelon growth experiments, the number of reproductive branches per plant of the strawberries applied with the composition of the present application increased by 1.1, the length of the reproductive branches increased by 7.5 cm, the number of fruits per plant increased by 4, and the weight of single fruit increased by 7.4 g, which were 47.8%, 60.5%, 38.8% and 32.0% higher than those of the control respectively; the watermelon plants were more robust, the diameter of the main vine increased by 0.44 mm (8.80%), while the length of single node decreased by 0.04 cm (-0.36%), and the number of initial fruit nodes decreased by 2.00 (-16.39%). In terms of fruit development, the circumference of the fruit increased by 2.94 cm (5.39%). BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0028] Figure 1 Figure 1 is a schematic diagram of the growth status of oat seedlings in Example 2 (July 12).

[0029] Figure 2 Figure 2 is a schematic diagram of the growth status of oat tillering and jointing stage in Test Example 1 (August 17): Figure A is a schematic diagram of macro plant density; Figure B is a schematic diagram of individual plant size; and Figure C is a schematic diagram of single plant root system.

[0030] Figure 3Figure of growth state and lodging of oats in test example 1 (October 2).

[0031] Figure 4 Figure of aerial photograph contrast of lodging of oats in each group of test example 2.

[0032] Figure 5 Figure of aerial photograph and close-up of oats that have lodged in test example 2.

[0033] Figure 6 Figure of growth state of strawberries in test example 3. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0035] Example 1 The present example provides a method for preparing the composition.

[0036] The steps of the method for preparing the composition are as follows: The total amount of the first feeding of the granulator is 1000 g.

[0037] (1) The raw materials are weighed according to the mass ratio of corn hull: polyvinyl alcohol: sodium bentonite: water 2:1:3:4, and the total amount is 1000 g.

[0038] (2) The hull is added first, followed by the addition of polyvinyl alcohol and sodium bentonite, and stirring is performed until they are uniformly mixed.

[0039] (3) The water is added at one time, and stirring is performed until it is uniformly mixed.

[0040] (4) After the raw materials are uniformly mixed, they are poured into a disc granulator (manufacturer: Zhengzhou Huachuang Machinery Co., Ltd., product number HCYP-500) (the speed button is adjusted to 2.5, and the disc inclination angle is 45°), and rotary granulation is performed to obtain the product.

[0041] Test Example 1 This example was tested in the oat planting base of the Jiaofu Aipu Farming Co., Ltd. in Chengde, and the oat variety was the domestic Mawang. The fertilizer amount was 30 kg / mu, and the control group did not use the composition. The amount of the composition used in the experimental group was 70 kg per mu. The sowing of oats was carried out on June 23, 2024. The plant growth of the planted oats was recorded and tested at the oat seedling stage on July 12, the oat tillering and jointing stage on August 17, and the heading stage on October 2. The results are shown in Tables 1-3 and Figures 1-3as shown.

[0042] The results are shown in Table 1 and Table 2. Figure 1 It can be seen that the oat seedlings treated with the composition of the present application have better growth conditions and germination rate than the control group, with an average increase of 43.98% in plant height, 13.46% in stem diameter, 12.14% in leaf area, and 11.45% in seedling density, indicating that the composition has the functions of increasing the germination success rate and promoting the growth of seedlings.

[0043] The results are shown in Table 1 and Table 2. Figure 2 It can be seen that the oat seedlings treated with the composition of the present application have better growth conditions and germination rate than the control group, with an average increase of 43.98% in plant height, 13.46% in stem diameter, 12.14% in leaf area, and 11.45% in seedling density, indicating that the composition has the functions of increasing the germination success rate and promoting the growth of seedlings.

[0044] The results are shown in Table 1 and Table 2. Figure 3 It can be seen that the oat seedlings treated with the composition of the present application have better growth conditions and germination rate than the control group, with an average increase of 43.98% in plant height, 13.46% in stem diameter, 12.14% in leaf area, and 11.45% in seedling density, indicating that the composition has the functions of increasing the germination success rate and promoting the growth of seedlings.

[0045] Test Example 2 This example was tested in the oat planting base of Hebei Sebei Land Reclamation Agricultural Development Group Co., Ltd. The test area was 35 mu, the oat variety was Bayan No. 4, the fertilizer amount was 30 kg, the control group did not use plant growth regulator, and the experimental group used plant growth regulator at a dosage of 70 kg per mu. The composition prepared by the present application and the commercially available environmentally friendly plant growth regulator Shikun (Chengdu Xinfa Technology Co., Ltd., Fertilizer Registration No. NY886-2010) were used, and the oat seeds were sown on May 30, 2024. The plant height and chlorophyll content were tested on July 12, the growth state and chlorophyll content were tested on August 6, and the dry weight biomass was tested on August 17. The chlorophyll content was detected by a portable chlorophyll meter (SPAD-502), and the results are shown in Tables 4-6. At the same time, the lodging conditions of the three groups of oat planting were taken by aerial photography, and the results are shown in Figure 4 5

[0046] Result analysis: ​​From Table 4, 5, it can be seen that in the oat growth experiment, the oat plant height, stem diameter and leaf width of the oat applying the composition of the present application are significantly higher than the blank control and the commercially available environment-friendly plant growth regulator, wherein the plant height is 15.5% higher than the control group on average, the stem diameter is 26.6% higher than the control group on average, and the leaf width is 10.8% higher than the control group on average; the leaf chlorophyll SPAD value is the highest, which is 71.2, 36.9% higher than the blank control and 18.7% higher than the commercially available environment-friendly plant growth regulator. It shows that the above composition can promote plant growth, increase leaf chlorophyll content and enhance photosynthesis.

[0047] From Table 6, it can be seen that the oat biomass dry weight applying the composition of the present application reaches 683.1 kg / acre, which is 22.7% higher than the blank control and 10.7% higher than the commercially available environment-friendly plant growth regulator.

[0048] From Figure 4 it can be seen that the oat applying the composition of the present application does not lodge throughout the growth season, while the oat applying the commercially available environment-friendly plant growth regulator and not applying the composition lodges to different degrees, and the lodging state is shown as Figure 5 .

[0049] Test Example 3 This example is tested in the strawberry planting base of Mancheng, Baoding, Hebei, and the test object is strawberry. The control group does not use plant growth regulator, and the experimental group uses plant growth regulator at a dosage of 70 kg per mu. The sowing of strawberry is carried out on September 15, 2025, and the composition is applied before sowing. On January 19, 2025, the plant height, leaf thickness, chlorophyll content and soil moisture are tested, and the results are shown in Table 7; on January 25, 2025, the number of reproductive branches per plant, reproductive branch length, fruit number per plant and single fruit weight are tested, and the results are shown in Table 8, and the growth state is shown in Figure 6 .

[0050] From Table 7, it can be seen that the composition significantly improves the chlorophyll content of strawberry seedlings, which is increased by more than 100%, the leaf thickness is increased by 68.7%, the plant height is increased by 61%, and the soil moisture is increased by 47.9%, which shows that the water-retaining composition has excellent promoting effect on the growth of strawberry.

[0051] From Table 8, it can be seen that the composition treatment significantly improves the number of reproductive branches per plant, reproductive branch length, fruit number per plant and single fruit weight, wherein the number of reproductive branches per plant is increased by 1.1, the reproductive branch length is increased by 7.5 cm, the fruit number per plant is increased by 4, and the single fruit weight is increased by 7.4 g, which are increased by 47.8%, 60.5%, 38.8% and 32.0% respectively compared with the control.

[0052] FromFigure 6 It can be seen that the strawberry applied with the composition grows more densely, the plant is more robust, the green is darker, and has a better growth state.

[0053] Test Example 4 This example was tested in a greenhouse in the Mancheng planting base of Baoding, Hebei Province. The test species was watermelon. The control group did not use plant growth promoters, and the experimental group used 70 kg of plant growth promoters per mu. The watermelon was sown on April 20, 2025, and the leaf area, leaf thickness, chlorophyll content, main vine diameter, fruit circumference, main vine single node length, and initial fruit node number were tested on May 17, 2025. The results are shown in Table 9. The flower morphology and soil moisture and conductivity information were also tested during the flowering period on May 20. The results are shown in Table 10.

[0054] As shown in Table 9, in terms of leaf characteristics, the leaf area of the treated group increased by 94.95 cm² (61.65%) compared to the control group, the leaf thickness increased by 0.10 mm (23.81%), and the chlorophyll content increased by 19.40 units (21.83%). The stem characteristics showed that the main vine diameter increased by 0.44 mm (8.80%), while the single node length decreased by 0.04 cm (-0.36%), and the initial fruit node number decreased by 2.00 nodes (-16.39%). In terms of fruit development, the fruit circumference increased by 2.94 cm (5.39%).

[0055] As shown in Table 10, among the flower morphology indicators, the female flower diameter increased the most, by 7.01 mm (21.38%), the male flower diameter increased by 0.25 mm (0.62%), and the ovary diameter increased by 0.93 mm (7.26%).

[0056] In terms of soil characteristics, the water content increased by 3.66 percentage points (16.28%), and the conductivity decreased by 0.40 mS / cm (-23.26%).

[0057] The above results show that the use of the water-retaining composition provided by the present application can significantly improve the growth ability of the plant body and the size and quality of the fruit.

[0058] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not limiting. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can modify the technical solutions described in the foregoing examples, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A composition characterized in that, The composition comprises corn hull, polyvinyl alcohol, sodium bentonite and water.

2. The composition of claim 1, wherein, The composition comprises corn hull 16-22 parts by mass, polyvinyl alcohol 8.3-11.1 parts, sodium bentonite 8.3-22.2 parts, and water 44-66 parts.

3. A product characterized by, The product is a plant growth promoter, seedling strengthening agent, fertilizer, nutrient modifier or anti-lodging agent.

4. Use of the composition of any one of claims 1 or 2 in the preparation of a plant growth promoter, seedling strengthening agent, fertilizer, nutrient modifier or anti-lodging agent.

5. Use of the composition of any one of claims 1 or 2 or the product of claim 3 for any one of the following purposes: (1) plant cultivation; (2) plant seedling raising; (3) enhancing plant stress resistance, especially anti-lodging; (4) increasing plant chlorophyll content; (5) increasing plant fruit yield and quality; (6) increasing plant biomass; (7) increasing plant flower diameter.

6. A method for promoting plant growth, comprising incorporating the composition of any one of claims 1-3 or the composition prepared by the preparation method into soil where plants grow.

7. The method of claim 6, wherein, The incorporation of the composition or product into soil can be by strip application, hole application, scattering, layering, or mixing with fertilizer.

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