Water-soluble foliar fertilizer for improving fertilizer efficiency by inducing opening of plant leaf pores and application of water-soluble foliar fertilizer

Abstract

The invention provides a water-soluble foliar fertilizer for improving fertilizer efficiency by inducing opening of plant leaf pores and application of the water-soluble foliar fertilizer, and belongs to the technical field of fertilizers. The water-soluble foliar fertilizer comprises the following components in percentage by mass: 0.2-0.5% of an abscisic acid synthesis inhibitor, 1-2% of a chelating agent, 1-2% of a surfactant, 47-58% of urea, 23-35% of triple superphosphate and 16-20% of potassium sulfate. The water-soluble foliar fertilizer disclosed by the invention can induce plant leaf stomata to open and accelerate the foliar water-soluble fertilizer to enter the leaves through the stomata, so that the fertilizer efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilizers, and in particular relates to a water-soluble foliar fertilizer capable of improving fertilizer efficiency by inducing the opening of stomata in plant leaves and an application thereof. Background Art

[0002] Foliar-applied water-soluble fertilizers can be directly absorbed and utilized by crop leaves, providing a rapid nutritional boost. Plant leaves absorb nutrients from water-soluble fertilizers through two primary pathways: Nutrients slowly penetrate the leaf wax layer and enter the leaf interior. Foliar-applied water-soluble fertilizers can also enter the leaf directly through open stomata. Therefore, closed stomata restrict the entry of water-soluble fertilizers into the leaf interior, reducing the effectiveness of foliar-applied water-soluble fertilizers. Currently, no foliar-applied water-soluble fertilizers have been developed that can enhance plant absorption and enhance fertilizer efficiency by inducing the opening of plant leaf stomata. Summary of the Invention

[0003] Purpose of the Invention: To address the shortcomings of the prior art, the present invention provides a water-soluble foliar fertilizer that enhances fertilizer efficiency by inducing the opening of plant stomata. Abscisic acid is a key hormone that causes stomata to close on plant leaves. The water-soluble foliar fertilizer provided by the present invention inhibits abscisic acid synthesis by adding an inhibitor, prompting stomata to open and absorb the water-soluble fertilizer. The addition of a surfactant also enhances the spread of the water-soluble fertilizer and accelerates its penetration through the wax layer. Furthermore, the addition of a chelate enhances nutrient penetration efficiency and achieves a slow-release effect, thereby improving the fertilizer's effectiveness.

[0004] To solve the above technical problems, the present invention proposes a water-soluble foliar fertilizer that improves fertilizer efficiency by inducing the opening of plant leaves' stomata and its application. The specific technical solution is as follows:

[0005] In a first aspect, the present invention provides a water-soluble foliar fertilizer comprising the following components by weight: 0.2-0.5% of an abscisic acid synthesis inhibitor, 1-2% of a chelating agent, 1-2% of a surfactant, 47-58% of urea, 23-35% of triple superphosphate, and 16-20% of potassium sulfate. Preferably, the water-soluble foliar fertilizer comprises the following components by weight: 0.2% of an abscisic acid synthesis inhibitor, 1.2% of a chelating agent, 1.1% of a surfactant, 53.3% of urea, 26.1% of triple superphosphate, and 18.1% of potassium sulfate.

[0006] The abscisic acid synthesis inhibitor is fluridone. Abscisic acid closes the stomata of leaves, and fluridone can inhibit abscisic acid synthesis, resulting in a decrease in the abscisic acid content in leaves, ultimately causing the stomata to open and allowing water-soluble fertilizers to enter the leaves.

[0007] The chelating agent is γ-polyglutamic acid with a molecular weight of 1000 KDa, which can chelate and slowly release nutrients, thereby improving nutrient penetration efficiency and slowly releasing nutrients.

[0008] The surfactant is 3-[methoxypoly(ethoxy)]propyl-methyl-bis(trimethylsiloxy)silane (MT for short), which can make the water-soluble fertilizer spread better and accelerate the nutrients to penetrate the wax layer.

[0009] Wherein, the urea is slow-release urea.

[0010] The nitrogen content of the urea is 43%; the P2O5 content of the triple superphosphate is 44%; and the K2O content of the potassium sulfate is 50%.

[0011] In a second aspect, the present invention provides a method for preparing the water-soluble foliar fertilizer described in the first aspect, which is prepared by uniformly mixing and stirring a formulated amount of an abscisic acid synthesis inhibitor, a chelating agent, a surfactant, urea, triple superphosphate, and potassium sulfate.

[0012] In a third aspect, the present invention provides the use of the water-soluble foliar fertilizer described in the first aspect in inducing the opening of stomata in plant leaves.

[0013] Specifically, the water-soluble foliar fertilizer is mixed with water in a mass ratio of 1:1000 to obtain a foliar fertilizer aqueous solution, and the foliar fertilizer aqueous solution is evenly sprayed onto plant leaves by spraying, which can significantly induce the opening of plant leaf stomata and thus improve fertilizer efficiency.

[0014] Wherein, the plants include rice.

[0015] Beneficial effects:

[0016] The present invention provides a water-soluble foliar fertilizer that improves fertilizer efficiency by inducing the opening of stomata in plant leaves. The water-soluble foliar fertilizer of the present invention can induce the opening of stomata in plant leaves, accelerate the entry of foliar water-soluble fertilizer into the interior of the leaves through the stomata, and improve fertilizer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more apparent.

[0018] Figure 1 This is a scanning electron micrograph of closed rice stomata obtained after application of the foliar fertilizer described in Example 1.

[0019] Figure 2 This is a scanning electron micrograph of rice stomata opened after application of the foliar fertilizer described in Example 8. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Any simple improvement to the preparation method of the present invention under the premise of the concept of the present invention falls within the scope of protection of the present invention.

[0021] Example 1-8 Preparation and Use of Water-Soluble Foliar Fertilizer

[0022] The following components were mixed and stirred evenly according to the formula in Table 1 to prepare a water-soluble foliar fertilizer, wherein the mass content of each component in the formula in Table 1 is as follows:

[0023] Abscisic acid synthesis inhibitor: fluridone 0.2wt%;

[0024] Chelating agent: polyglutamic acid 1.2 wt% (the polyglutamic acid is γ-polyglutamic acid with a molecular weight of 1000 KDa);

[0025] Surfactant: 3-[methoxypoly(ethoxy)]propyl-methyl-bis(trimethylsiloxy)silane (MT) 1.1 wt%;

[0026] 53.3 wt% of slow-release urea (the slow-release urea has a nitrogen content of 43%);

[0027] 26.1 wt% of triple superphosphate (the P2O5 content in the triple superphosphate is 44%);

[0028] Potassium sulfate 18.1 wt% (the K2O content in the potassium sulfate is 50%).

[0029] The water-soluble foliar fertilizer is mixed with water in a mass ratio of 1:1000 to obtain a foliar fertilizer aqueous solution, and then the foliar fertilizer aqueous solution is evenly sprayed onto leaves of potted rice.

[0030] Table 1 Water-soluble foliar fertilizer formula

[0031]

[0032] Comparative Example

[0033] The commercially available straw organic fertilizer composting agent (German Comp Gold macro-element water-soluble fertilizer) was used as a comparative example, and the dosage and usage were in accordance with the product instructions.

[0034] Rice seeds were surface-sterilized with 2.5% sodium hypochlorite for 10 minutes and germinated in the dark at 25°C for 3 days. The germinated seeds were then sown in a seedling-raising medium and cultured for 10 days. The seeds were then transplanted into a hydroponic box containing 2 kg of soil and 1.2 L of water. Three rice plants were transplanted into each hydroponic box. Three replicate hydroponic boxes were set up for each of the clear water example, comparative example, and embodiment. When rice grew to the 2-leaf 1-heart stage, the foliar fertilizer aqueous solution prepared in Examples 1-8 was evenly sprayed onto the leaves of the potted rice. The organic fertilizer compost described in the comparative example was used as a positive control according to the instructions. Clear water spraying (clear water example) was used as a negative control. All rice plants were destructively harvested 7 days after spraying. The rice plants were sterilized at 105°C for 15 minutes, dried at 65°C to constant weight, and the dried plant samples were ground for determination of nitrogen, phosphorus, and potassium content in the rice plants. The rice plants were digested using H2SO4-H2O2. The nitrogen content was determined by the Kjeldahl method, the phosphorus content was determined by the molybdenum antimony colorimetric method, and the potassium content was determined by the flame photometer method. The results are shown in Table 2 below:

[0035] Table 2 Nitrogen, phosphorus and potassium contents in rice plants

[0036]

[0037] As shown in Table 2, compared with pure water, the comparative example and each embodiment can increase the nitrogen, phosphorus and potassium content of rice plants, but the nitrogen, phosphorus and potassium content of rice plants in Examples 6, 7 and 8 are all higher than those in the comparative example, among which Example 8 has the best effect in increasing the nitrogen, phosphorus and potassium content of rice plants.

[0038] The present invention also performed electron microscope scanning on the rice plants after fertilization. Figure 1 and Figure 2 As shown by Figure 2 It can be seen that after applying the foliar fertilizer aqueous solution described in Example 8, the stomata of the rice leaves can be clearly seen to be open.

[0039] The present invention provides a water-soluble foliar fertilizer for improving fertilizer efficiency by inducing stomatal opening in plant leaves, and its application concept and method. There are many methods and approaches to implement this technical solution. The above is only a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A water-soluble foliar fertilizer that improves fertilizer efficiency by inducing the opening of stomata in plant leaves, characterized in that: The invention comprises the following components in amounts by mass: 0.2-0.5% of an abscisic acid synthesis inhibitor, 1-2% of a chelating agent, 1-2% of a surfactant, 47-58% of urea, 23-35% of triple superphosphate and 16-20% of potassium sulfate.

2. water-soluble foliage fertilizer according to claim 1, is characterized in that, The water-soluble foliar fertilizer contains the following components by mass: 0.2% of an abscisic acid synthesis inhibitor, 1.2% of a chelating agent, 1.1% of a surfactant, 53.3% of urea, 26.1% of triple superphosphate and 18.1% of potassium sulfate.

3. The water-soluble foliage fertilizer according to claim 1, wherein The abscisic acid synthesis inhibitor is fluridone; and the chelating agent is gamma-polyglutamic acid with a molecular weight of 1000KDa.

4. The water-soluble foliage fertilizer according to claim 1, wherein The surfactant is 3-[methoxypoly(ethoxy)]propyl-methyl-bis(trimethylsiloxy)silane.

5. The water-soluble foliage fertilizer according to claim 1, wherein The urea is slow-release urea.

6. The water-soluble foliage fertilizer according to claim 1, wherein The nitrogen content of the urea is 43%; the P2O5 content of the triple superphosphate is 44%; and the K2O content of the potassium sulfate is 50%.

7. The method for preparing the water-soluble foliar fertilizer according to any one of claims 1 to 6, characterized in that: The preparation method is prepared by uniformly mixing and stirring the abscisic acid synthesis inhibitor, chelating agent, surfactant, urea, triple superphosphate and potassium sulfate in the formulated amounts.

8. Use of the water-soluble foliar fertilizer according to any one of claims 1 to 6 in inducing stomatal opening in plant leaves.

9. The use according to claim 8, characterized in that The water-soluble foliar fertilizer and water are mixed at a mass ratio of 1:1000 to obtain a foliar fertilizer aqueous solution, and the foliar fertilizer aqueous solution is evenly sprayed onto plant leaves through spraying.

10. The use according to claim 8, characterized in that The plants include rice.

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