Growth regulator for stagnation breeding type carbonaceous muddy field and application of growth regulator

Abstract

The invention relates to the technical field of plant growth regulators, and discloses a growth regulator for a stagnation type carbonaceous mud field and application of the growth regulator, the growth regulator for the stagnation type carbonaceous mud field provided by the invention comprises the following components: KNO3, nano SiO2 and graphene oxide. According to the growth regulator, KNO3, nano SiO2 and graphene oxide are compounded for use, so that the problem that nutrient absorption of rice grains is affected by high C / N ratio of a southern stagnation breeding type carbonaceous mud field is solved, the yield of rice is increased, and the quality of the rice is improved.

Description

Technical Field

[0001] This invention relates to the field of plant growth regulator technology, specifically to a growth regulator for stagnant carbonaceous mud fields and its applications. Background Technology

[0002] Glandile carbonaceous mud paddy fields refer to paddy soils formed from weathered carbonaceous mudstone and shale. In Jiangxi Province, they are mainly distributed in four regions: Ganzhou, Shangrao Fuzhou, and Ji'an.

[0003] Gleyed peat fields, due to the high organic carbon content in their parent material, exhibit a darker, grayish-black color across all layers of the soil profile. They generally have a sticky texture and contain a small amount of gravel. The soil organic matter content of gleyed peat fields is 6.1% ± 0.7%, and the soil carbon-to-nitrogen ratio (C / N) is 15–30. The high C / N ratio in gleyed peat fields affects soil nitrogen supply dynamics and the soil physicochemical environment, leading to insufficient or delayed nitrogen supply during key rice growth stages (especially panicle differentiation and grain filling), resulting in a decline in the nutritional quality and milling quality of rice.

[0004] Currently, there are many methods and products on the market to improve rice yield and quality, but the main approach is to increase soil organic matter and nutrient content. There is still very little research on the impact of high C / N ratio in peat moss soil on rice quality. Summary of the Invention

[0005] This invention provides a growth regulator for stagnant carbonaceous mud fields and its application, in order to solve the problem that the high C / N ratio of stagnant carbonaceous mud field soil has a significant impact on rice quality.

[0006] In a first aspect, the present invention provides a growth regulator for stagnant carbonaceous mudflats, comprising the following components:

[0007] KNO3, nano-SiO2 and graphene oxide.

[0008] In one optional embodiment, the components include the following parts by weight: 400~3500 parts by weight of KNO3, 5~40 parts by weight of nano-SiO2 and 10~70 parts by weight of graphene oxide; Preferably, the composition is 800-1600 parts by weight of KNO3, 10-25 parts by weight of nano-SiO2, and 20-50 parts by weight of graphene oxide.

[0009] In one optional embodiment, the growth regulator further includes a solvent; In one alternative embodiment, the solvent comprises water.

[0010] In one optional embodiment, the ratio of KNO3 to water in the growth regulator is 8-16 g: 1000 mL.

[0011] In one optional embodiment, the method for preparing the rice growth regulator includes the following steps: Take the specified weight parts of KNO3, nano-SiO2, and graphene oxide and mix them evenly with the solvent.

[0012] Secondly, the present invention also provides the use of the above-mentioned growth regulator for pristine carbonaceous mud fields in improving rice yield and quality.

[0013] In one alternative embodiment, the growth regulator is applied to the rice.

[0014] In one optional embodiment, the growth regulator is applied during both the rice flowering and grain-filling stages.

[0015] In one alternative embodiment, the growth regulator is applied via foliar spraying.

[0016] In one optional embodiment, the application rate of the growth regulator is 30-60 L / mu.

[0017] The technical solution of this invention has the following advantages: 1. This invention provides a growth regulator for paddy fields with stagnant carbonaceous soil, comprising the following components: KNO3, nano-SiO2, and graphene oxide. The growth regulator of this invention utilizes graphene oxide as a dispersant to uniformly disperse nano-SiO2 in an aqueous solution, thereby utilizing the porous network structure of SiO2 to form a protective film on the leaf surface, exhibiting antibacterial, water-permeable, and light-transmitting properties, thus improving the photosynthetic capacity of rice. The N and K contained in growth regulators are essential macronutrients for plants. Foliar spraying during the flowering and grain-filling stages of rice can promote the increase of nitrogen content in grains, improve the grain-filling ability and photosynthesis of rice, and effectively improve the quality of rice.

[0018] 2. The growth regulator for peat moss fields provided by this invention, by combining KNO3, nano-SiO2 and graphene oxide, not only solves the problem of high C / N ratio affecting nutrient absorption of rice grains in peat moss fields in southern China, but also increases rice yield and improves rice quality. Detailed Implementation

[0019] The following embodiments are provided to better understand the present invention, but the following embodiments do not constitute a limitation on the content and scope of protection of the present invention. Any product that is the same as or similar to the present invention, derived by any person under the guidance of the present invention or by combining the features of the present invention with other prior art, falls within the scope of protection of the present invention.

[0020] Unless otherwise specified, all experimental steps or conditions in the examples were performed according to conventional experimental procedures and conditions in the art. Reagents or instruments whose manufacturers are not specified are all commercially available products.

[0021] KNO3 was purchased from Tianji Group Potash Co., Ltd., and it is agricultural potassium nitrate, conforming to GB / T 20784—2018 "Agricultural Potassium Nitrate"; nano SiO2 (particle size 30nm) was purchased from Shanghai Maclean Biochemical Technology Co., Ltd.; graphene oxide was purchased from Suzhou Hengqiu Graphene Technology Co., Ltd.

[0022] Examples 1-9 Example 1-Example 9 provides a growth regulator for stagnant carbonaceous mud fields, the formulation of which is shown in Table 1. According to Table 1, weigh the corresponding mass of KNO3, nano-SiO2 and graphene oxide, add them to water, stir and mix evenly to prepare the concentration shown in Table 1.

[0023] Comparative Example 1 This comparative example provides a growth regulator whose formulation and preparation method are the same as in Example 1, except that KNO3 and graphene oxide are omitted.

[0024] Comparative Example 2 This comparative example provides a growth regulator whose formulation and preparation method are the same as in Example 1, except that KNO3 and nano-SiO2 are omitted.

[0025] Comparative Example 3 This comparative example provides a growth regulator whose formulation and preparation method are the same as in Example 1, except that nano-SiO2 and graphene oxide are omitted.

[0026] Comparative Example 4 This comparative example provides a growth regulator whose formulation and preparation method are the same as in Example 1, except that KNO3 is omitted.

[0027] Comparative Example 5 This comparative example provides a growth regulator whose formulation and preparation method are the same as in Example 1, except that nano-SiO2 is omitted.

[0028] Comparative Example 6 This comparative example provides a growth regulator whose formulation and preparation method are the same as in Example 1, except that graphene oxide is omitted.

[0029] The formulations of Comparative Examples 1-6 are shown in Table 1.

[0030] Table 1. Concentration of each component in the growth regulators of the examples and comparative examples.

[0031] Experimental Example 1 The rice-growing peatland in this experiment was located in the experimental base in Puqian Township, Hengfeng County, Jiangxi Province. The area has a subtropical monsoon climate with an average annual rainfall of 1562 mm, an average temperature of 17.5℃, and a frost-free period of 273 days.

[0032] The nutrient status of the experimental field was as follows: pH 5.62, organic matter 51.3 g / kg, total nitrogen 1.2 g / kg, C / N ratio 24.8, available nitrogen 38.3 mg / kg, available phosphorus 10.5 mg / kg, and available potassium 73.9 mg / kg.

[0033] The experiment consisted of 16 treatments, each with 3 replicates, arranged in a randomized block design, with a plot size of 12m². 2 Each area is separated by field ridges covered with agricultural film, allowing for independent irrigation and drainage.

[0034] The fertilizers applied uniformly to all experimental groups were urea (nitrogen fertilizer), superphosphate (phosphate fertilizer), and potassium chloride (potassium fertilizer), with application rates of 150 kg / hm² for each fertilizer. 2 75 kg / hm 2 150 kg / hm 2 .

[0035] Rice was transplanted at a density of 14cm × 26cm on April 23, 2023. The growth regulators shown in Table 1 were sprayed onto the rice leaves during the flowering stage (June 12-17) and the grain-filling stage (June 15-July 10). Examples 1-7 and Comparative Examples 1-6 were sprayed at 30L / mu each time, while Examples 8-9 were sprayed at 60L / mu each time. A water control group was set up, where water was sprayed onto the leaves during the flowering stage (June 12-17) and the grain-filling stage (June 15-July 10), at a rate of 30L / mu each time. The rice was harvested on July 15.

[0036] Rice yield was measured separately for each experimental plot.

[0037] Rice quality was tested according to national standards. Among them, chalky grain rate and chalkiness were determined according to GB / T 17891—1999 "High-quality Rice", hulling rate was determined according to GB / T 5495—2008 "Grain and Oil Inspection: Test of Hulling Rate of Rice", milled rice rate and head rice rate were determined according to GB 1350—2009 "Rice", protein content was determined according to NY / T 3—1982 "Determination of Crude Protein in Cereal and Legume Seeds (Semi-micro Kjeldahl Method)", and rice yield was determined according to the direct gravimetric method.

[0038] Nutrient determination of grains was carried out in accordance with the "Methods for Soil Agricultural Chemical Analysis". After digestion and decomposition of grains with H2SO4-H2O2, total phosphorus was determined by molybdenum antimony colorimetric method; total potassium was determined by flame photometry; calcium and magnesium were determined by atomic absorption spectrophotometry after digestion of plants with HNO3-HClO4; and silicon was determined by gravimetric method.

[0039] The measurement results are shown in Tables 2 and 3.

[0040] Table 2 Effects of growth regulators on rice quality

[0041] Note: Different lowercase letters indicate significant differences between different treatments. p <0.05).

[0042] Table 2 shows that Examples 1 to 9 all improved rice quality, with Examples 1, 8, and 9 showing the best effects. The milled rice rate of Examples 1, 6, and 9 was significantly higher than that of the water control group and Comparative Examples 1 to 3. The head rice rate of Examples 1 and 8 was significantly higher than that of the water control group and most of the comparative examples. The chalkiness of Examples 1 and 9 was significantly lower than that of the water control group, indicating a significant improvement in appearance quality. Comparative Examples 1 to 6 showed no significant difference from the water control group, indicating that the growth regulator lacked at least one component, limiting its effect on improving appearance quality. The chalky grain rate in Examples 1, 7, 8, and 9 was significantly lower than that of the control, indicating that these treatments could effectively reduce chalkiness. The protein content of Examples 1, 3, and 8 was significantly higher than that of the control group, and the yield of Examples 1 to 9 was significantly higher than that of the water control.

[0043] Table 3. Effects of growth regulators on grain nutrient content

[0044] Note: Different lowercase letters indicate significant differences between different treatments. p <0.05).

[0045] Table 3 shows that Examples 1 through 9 all improved the nutrient content of the grains. The phosphorus (P) and magnesium (Mg) contents of all treatment groups were not significantly different from the water control, indicating that the growth regulators had no significant effect on the absorption and accumulation of P and Mg in rice. Compared to the water control, Example 1 significantly increased the potassium (K) content by 26.9%, the calcium (Ca) content by 20.5%, and the silicon (Si) content by 26.9%. Furthermore, the Si content of most examples was significantly higher than that of the water control group, while Comparative Examples 1 through 6 showed no significant difference from the control group.

[0046] In summary, as shown in Tables 2 and 3, the treatment groups in the examples (especially Examples 1, 8, and 9) have excellent effects in improving rice quality and nutrient content. They can significantly improve the appearance, processing, and nutritional quality of rice, and strongly promote the absorption of stress-resistant elements such as Si. In contrast, the effects of the comparative treatment groups are limited, with most showing no significant difference from the control in terms of quality and mineral absorption. This indicates that the components of the growth regulators of the present invention have a synergistic effect.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A growth regulator for stagnant carbonaceous mudflats, characterized in that, It includes the following components: KNO3, nano-SiO2 and graphene oxide.

2. The growth regulator for stagnant carbonaceous mudflats according to claim 1, characterized in that, The components include the following parts by weight: 400~3500 parts by weight of KNO3, 5~40 parts by weight of nano SiO2 and 10~70 parts by weight of graphene oxide; Preferably, the composition is 800-1600 parts by weight of KNO3, 10-25 parts by weight of nano-SiO2, and 20-50 parts by weight of graphene oxide.

3. The growth regulator for stagnant carbonaceous mudflats according to claim 1 or 2, characterized in that, The growth regulator also includes a solvent; Optionally, the solvent may include water.

4. The growth regulator for stagnant carbonaceous mudflats according to claim 3, characterized in that, In the growth regulator, the ratio of KNO3 to water is 8~16g:1000mL.

5. The growth regulator for stagnant carbonaceous mudflats according to any one of claims 1-4, characterized in that, The preparation method of the growth regulator includes the following steps: Take the specified weight parts of KNO3, nano-SiO2, and graphene oxide and mix them evenly with the solvent.

6. The use of a growth regulator for stagnant carbonaceous mudflats as described in any one of claims 1-5 in improving rice yield and quality.

7. The use according to claim 6, characterized in that, The growth regulator is applied to the rice.

8. The use according to claim 7, characterized in that, The application time of the growth regulator includes the rice flowering stage and the rice grain filling stage.

9. The use according to claim 8, characterized in that, The application method of the growth regulator includes foliar spraying.

10. The use according to claim 9, characterized in that, The application rate of the growth regulator is 30-60 L / mu.

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