A pesticide composition for inhibiting sprouting of a spike, a preparation thereof, and use thereof

Abstract

The present application relates to the technical field of pesticides, in particular to a pesticide composition for inhibiting spike germination, a preparation and application thereof.The components of the composition comprise, by weight fraction, 2-8 parts of p-chlorophenoxyacetic acid or an agronomically acceptable salt thereof, 10-50 parts of an enzyme preparation, 10-50 parts of a copper preparation, wherein the enzyme preparation is a mixture of lysozyme and chitinase at a weight ratio of 1:1.The present application can inhibit spike germination by scientific compounding of the components, and is safe in use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pesticides, in particular to a pesticide composition for inhibiting spike germination, a preparation and application thereof. BACKGROUND

[0002] In recent years, global warming has led to an increase in extreme weather, and the probability of encountering rainy weather during the maturation and harvesting season in major production areas of field crops such as rice and wheat (such as the Huanghuai wheat region and the middle and lower reaches of the Yangtze River rice region in China) has significantly increased. However, the large-scale planting and mechanized harvesting mode requires a relatively short harvesting window, making it difficult to avoid continuous rain, and in addition, in order to pursue high yield and high seed germination rate, the seed dormancy period is often shortened during the breeding process, resulting in a decrease in the crop's own resistance to spike germination. Under the combined action of the above factors, the phenomenon of spike germination of field crops occurs frequently. Spike germination not only causes grain yield loss, but also seriously damages processing quality (such as flour stickiness, head rice rate) and eating quality, reducing commodity value; at the same time, germinated grains are prone to mold growth, increasing the risk of mycotoxin (such as vomitoxin) contamination, posing a threat to food safety. Therefore, exploring effective products to inhibit spike germination is of great importance to global food security and agricultural product quality.

[0003] For the problem of spike germination of rice, wheat and other field crops, chemical regulation means is currently mainly used, relying on plant growth regulators to inhibit spike germination, the most commonly used agents are S-antagonist which delays grain germination by exogenous ABA signal supplementing, and ethylene release which induces ethylene production to inhibit radicle elongation. However, both types of agents have obvious shortcomings: the synthesis process of S-antagonist is complex, resulting in high use cost, lack of economic feasibility, and difficulty in being accepted by farmers, and S-antagonist is prone to photolysis, resulting in unstable effect, in addition, its optimal application time window is very narrow, early application may excessively inhibit grain filling, affecting yield, and late application may be difficult to adhere to the spike due to rain washing or crop canopy closure, resulting in decreased effect, increasing the difficulty and risk of use. The most commonly used ethylene release is ethephon, but its phytotoxicity risk is prominent, and its safety is low, not only affecting the final stage of grain filling (resulting in a decrease in thousand-grain weight), but also seriously weakening the plant's stress resistance, easily causing substantial yield reduction, and ethylene is a volatile gas, absorption is unstable, and in long-term rainy weather, it is difficult to absorb, resulting in unstable effect. Both of them mainly act through a single endogenous hormone pathway, and their effect is easily affected by complex factors such as crop variety, planting site climate, water and fertilizer management, and their effect stability and reliability are insufficient. SUMMARY

[0004] The present application provides a pesticide composition for inhibiting spike germination, a preparation and application thereof in order to solve the defects in the prior art. The present application can inhibit spike germination by scientific compounding of various components, and the use is safe.

[0005] To achieve the above object, the present application adopts the following technical solutions.

[0006] In a first aspect, the present application provides a pesticide composition for inhibiting sprouting of spikes, which comprises, in parts by weight, 2-8 parts of p-chlorophenoxyacetic acid or an agronomically acceptable salt thereof, 10-50 parts of an enzyme preparation, and 10-50 parts of a copper preparation, wherein the enzyme preparation is a mixture of lysozyme and chitinase at a weight ratio of 1:1.

[0007] Preferably, the p-chlorophenoxyacetic acid or the agronomically acceptable salt thereof is selected from any one or more of sodium p-chlorophenoxyacetate and potassium p-chlorophenoxyacetate.

[0008] Preferably, the copper preparation is selected from one or more of copper sulfate, copper acetate, EDTA-Cu, and copper ammonium citrate.

[0009] Illustratively, the p-chlorophenoxyacetic acid or the agronomically acceptable salt thereof is any one of 2 parts, 4 parts, and 8 parts, or a value between any two of them.

[0010] Illustratively, the enzyme preparation is any one of 10 parts, 20 parts, 30 parts, 40 parts, and 50 parts, or a value between any two of them.

[0011] Illustratively, the copper preparation is any one of 10 parts, 20 parts, 30 parts, 40 parts, and 50 parts, or a value between any two of them.

[0012] In a second aspect, the present application provides a pesticide preparation for inhibiting sprouting of spikes, which comprises the pesticide composition and a pharmaceutically acceptable adjuvant.

[0013] Preferably, the adjuvant comprises any one or more of a solvent, a wetting agent, a dispersing agent, an antifreezing agent, a thickening agent, a disintegrating agent, a filler, and a nutrient element.

[0014] Preferably, the dosage form of the pesticide preparation comprises any one of a soluble liquid, a suspension, a soluble powder, and a water-dispersible granule.

[0015] In a third aspect, the present application provides use of the pesticide composition or the pesticide preparation as described above in inhibiting sprouting of spikes of a plant.

[0016] Preferably, the effective components of the pesticide composition are used in an amount such that the concentration of the p-chlorophenoxyacetic acid or the agronomically acceptable salt thereof is 10-40 ppm, the concentration of the enzyme preparation is 50-250 ppm, and the concentration of the copper preparation is 50-250 ppm.

[0017] Illustratively, the concentration of the p-chlorophenoxyacetic acid or the agronomically acceptable salt thereof is any one of 10 ppm, 20 ppm, and 40 ppm, or a value between any two of them.

[0018] Exemplarily, the concentration of the enzyme preparation is any one of 50 ppm, 100 ppm, 150 ppm, 200 ppm, 250 ppm or a value between any two of them.

[0019] Exemplarily, the concentration of the copper preparation is any one of 50 ppm, 100 ppm, 150 ppm, 200 ppm, 250 ppm or a value between any two of them.

[0020] Preferably, the application further comprises promoting crop yield.

[0021] Preferably, the crop is rice or wheat.

[0022] Preferably, the application site of the pesticide composition or pesticide preparation is the ear.

[0023] Preferably, the application period of the pesticide composition or pesticide preparation is the late filling stage (wax maturity stage).

[0024] The beneficial effects of the present application are:

[0025] The pesticide composition for inhibiting spike sprouting provided by the application has a significant effect on inhibiting spike sprouting and promoting crop yield by scientific compounding of each component. The 2-dual nature of chlorophenoxyacetic acid or its agriculturally acceptable salt has the effect of auxin, can stimulate cell division and tissue differentiation at a low concentration, stimulate ovary swelling, induce parthenocarpy, form seedless fruit, promote fruit setting and fruit swelling, and inhibit growth at a high concentration, destroy acid growth mechanism (cell wall hardening) and induce endogenous ethylene synthesis, and grain germination can be inhibited by spraying a suitable concentration. The application reasonably regulates the amount of chlorophenoxyacetic acid or its agriculturally acceptable salt, effectively inhibits the germination and growth process of the embryo by interfering with and breaking the balance of endogenous hormones in the seed, has a negative regulation effect on the biosynthesis of key hydrolytic enzymes such as alpha-amylase and beta-amylase, thereby blocking the nutrient substance decomposition and metabolism pathway of the seed for germination, depriving the energy source required for spike sprouting from the source, and keeping the seed in a dormant state. At the same time, it has physiological activity similar to natural auxin, can regulate the nutrient distribution and transport of crops, promote the directional enrichment of photosynthetic products to economic organs such as spikes, reduce invalid consumption, thereby increasing the thousand-grain weight and achieving the effect of yield increase and quality improvement. The enzyme preparation is lysozyme and chitinase, and the specific ratio of the composite enzyme preparation constitutes the biological protection and elicitor system of the composition. The main component of the cell wall of bacteria is peptidoglycan, and lysozyme can dissolve the cell wall of bacteria, leading to the death of bacteria. The main component of the cell wall of fungi is chitin, and chitinase can decompose the cell wall of fungi, leading to the death of fungi. Long-term rainy weather can promote the growth of mold, leading to the rotting of spike grains and affecting the quality of grains. The synergistic effect of lysozyme and chitinase in the application can efficiently degrade the cell walls of pathogenic bacteria that induce spike diseases, and a dry and healthy microenvironment is provided by preventing and reducing spike diseases, directly eliminating the conditions for spike sprouting caused by mold growth and increased humidity. In addition, the oligosaccharide fragments produced by chitinase degrading the cell walls of pathogenic bacteria, and the slight damage of the cell walls of crops under the action of enzymes, can all act as elicitors to activate the systemic resistance of crops, enhance the overall stress resistance and health level of plants, and healthy plants can maintain higher photosynthesis and later plasmolysis intensity, laying a foundation for yield increase. The copper preparation is a necessary nutrient element for crops and a broad-spectrum fungicide. On the one hand, copper ions have strong bactericidal effect and can form a protective layer on the surface of spikes to directly kill or inhibit various fungi and bacteria attached to the spikes, effectively preventing the rotting of spikes in rainy or humid environments, which is complementary to the effect of the enzyme preparation and provides double protection for blocking the pathological causes of spike sprouting. On the other hand, copper ions participate in biochemical reactions of plant growth, and higher than the normal demand of copper can induce the synthesis of a large amount of endogenous ethylene, thereby inhibiting grain germination.And copper is an essential cofactor for a variety of important enzymes in plants, supplementing copper nutrition can help to enhance the antioxidant capacity of crops, reduce active oxygen damage, maintain normal metabolic function, especially promote protein synthesis and photosynthetic electron transfer, so as to support the full filling and maturation of grains, thereby synergistically promoting crop yield increase. DETAILED DESCRIPTION

[0026] In order for those skilled in the art to better understand the technical solutions of the application, the application will be further described in detail below in conjunction with specific embodiments.

[0027] The lysozyme in the embodiment of the application is purchased from Cangzhou Xiasheng Enzyme Biotechnology Co., Ltd., and the chitinase is purchased from Guangdong Shengke Biochemical Technology Co., Ltd.

[0028] Embodiment 1

[0029] The embodiment provides a pesticide soluble powder for inhibiting spike germination, and components of the pesticide soluble powder are as follows in terms of weight parts: 8 parts of sodium p-chlorophenoxyacetate, 20 parts of lysozyme, 20 parts of chitinase, 40 parts of copper sulfate, and 12 parts of anhydrous magnesium sulfate.

[0030] Preparation method: according to the above ratio, sodium p-chlorophenoxyacetate, lysozyme, chitinase, copper sulfate and anhydrous magnesium sulfate are sequentially added to a mixing machine, and then uniformly mixed to obtain the pesticide soluble powder.

[0031] Embodiment 2

[0032] The embodiment provides a pesticide soluble powder for inhibiting spike germination, and components of the pesticide soluble powder are as follows in terms of weight parts: 8 parts of sodium p-chlorophenoxyacetate, 20 parts of lysozyme, 20 parts of chitinase, 40 parts of copper sulfate, and 12 parts of anhydrous magnesium sulfate.

[0033] Preparation method: according to the above ratio, sodium p-chlorophenoxyacetate, lysozyme, chitinase, copper sulfate and anhydrous magnesium sulfate are sequentially added to a mixing machine, and then uniformly mixed to obtain the pesticide soluble powder.

[0034] Embodiment 3 Investigation of the influence of the amount of sodium p-chlorophenoxyacetate on the inhibition of rice buds

[0035] 3.1 Purpose of the test: to investigate the influence of different amounts of sodium p-chlorophenoxyacetate on the inhibition of rice spike germination.

[0036] 3.2 Test time: from September 20, 2023 to September 27, 2023, during the rice ripening period (before continuous rainfall).

[0037] 3.3 Test site: Fengezhen, Taixing City, Jiangsu Province.

[0038] 3.4 Test object: Nangeng 5055, 158 days of growth period, early-maturing late indica type.

[0039] 3.5 Test design:

[0040] Table 1

[0041]

[0042] 3.6 Test method: The test agent is diluted according to the designed concentration, and then artificial spraying is carried out, focusing on the inflorescence part.

[0043] Evaluation index:

[0044] (1) Safety: Investigate whether there are dry tips, yellow leaves, leaf burns, dryness, etc. after 3, 7 days of application, and collect related materials.

[0045] Phytotoxicity grading method

[0046] -: no phytotoxicity;

[0047] +: very slight, no effect on crop growth;

[0048] ++: moderate, no effect on crop yield, can recover;

[0049] +++ : serious impact on normal growth, certain impact on yield;

[0050] ++++: very serious, causing loss, severe yield reduction.

[0051] (2) Index measurement: In the mature harvest period of rice, the following indexes are measured: effective panicle number per mu (panicle real grain number >5), panicle grain number, germination number, panicle germination rate, bud inhibition rate, thousand grain weight, yield, amylose content.

[0052] Effective panicle number per mu (panicle real grain number >5): 1m 2 Rice, count the effective panicle number, and convert the effective panicle number per mu. 2

[0053] Panicle grain number: five-point sampling is adopted, 10 panicles per point, and single panicle grain number (excluding small panicles with less than 5 grains) is investigated, and the average value is obtained.

[0054] Panicle germination rate measurement: After 5 days of rain, panicle germination is measured. In each plot, 5 points are sampled, 10 panicles per point, and the panicle germination rate of each treatment is investigated.

[0055] Bud inhibition rate: Bud inhibition rate (%) = (control germination rate - treatment germination rate) / control germination rate.

[0056] Thousand grain weight: After water floating, 100 grains are counted and weighed, repeated 3 times, and the average value of the similar 2 times is the hundred grain weight, multiplied by 10 as the thousand grain weight.

[0057] ​Theoretical yield per mu (kg / mu) = effective panicle number per mu (panicle) x grain number per panicle (grain) x 1000 grain weight (g) x 10 -6 .

[0058] Increase or yield increase rate calculation method: yield increase rate (%) = (treatment group yield-control group yield) / control group yield x 100%.

[0059] 3.7 Experimental results:

[0060] Table 2. Safety evaluation

[0061]

[0062] As can be seen from Table 2, in the safety test of the effect of the amount of sodium p-chlorophenoxyacetic acid on rice, the leaf and ear parts were safe when the weight of sodium p-chlorophenoxyacetic acid in treatments 1-4 was 1-8 parts (concentration 5-40 ppm). When the weight of sodium p-chlorophenoxyacetic acid reached 16 parts (concentration 80 ppm), it caused very slight phytotoxicity to the leaves.

[0063] Table 3. Results of rice bud inhibition test

[0064]

[0065] As can be seen from the experimental data in Table 3, sodium p-chlorophenoxyacetic acid has a very obvious effect on rice bud inhibition, and the inhibition rate gradually increases with the increase of the amount of sodium p-chlorophenoxyacetic acid, while the yield first increases and then decreases with the increase of the concentration of sodium p-chlorophenoxyacetic acid. Among them, the inhibition rate and yield increase rate of treatment group 1 are both low; although treatment group 5 has the highest inhibition rate, high concentration can inhibit growth, leading to insufficient filling, reduced 1000-grain weight, and ultimately reduced yield; the amount of sodium p-chlorophenoxyacetic acid in treatment groups 2-4 can ensure bud inhibition while improving yield, and does not affect filling, with the best overall effect.

[0066] Example 4: Investigation of the effect of enzyme preparation amount on rice bud inhibition

[0067] 4.1 Purpose of the test: To investigate the effect of different amounts of enzyme preparation on the inhibition of rice bud germination.

[0068] 4.2 Test time: September 20, 2023 to September 27, 2023, rice ripening period (before continuous rainfall).

[0069] 4.3 Test site: Fengezhen, Taixing City, Jiangsu Province.

[0070] 4.4 Test object: Nangeng 5055, 158 days of growth, early-maturing late indica type.

[0071] 4.5 Test design:

[0072] Table 4

[0073]

[0074] 4.6 Test method: same as 3.6 of Example 3.

[0075] 4.7 Experimental results:

[0076] Table 5. Safety evaluation

[0077]

[0078] As can be seen from Table 5, the drug dosage of treatments 1-7 has no effect on the safety of rice crops, and no phytotoxicity is shown.

[0079] Table 6. Rice bud sprouting inhibition test results

[0080]

[0081] As can be seen from Table 6, the dosage of enzyme preparation has a certain effect on the bud inhibition of rice. The enzyme preparation has an inhibitory effect on the reproduction of bacteria and fungi, on the one hand, reducing the influence of humid environment on seed germination, and on the other hand, ensuring the quality of rice is not affected by inhibiting the reproduction of pathogenic bacteria. The bud inhibition rate, yield increase rate and amylose content of treatments 1-7 are all improved with the increase of enzyme preparation.

[0082] Example 5 Investigation of the effect of copper preparation dosage on rice bud inhibition

[0083] 5.1 Purpose of the test: to investigate the effect of copper preparation dosage on the inhibition of rice bud sprouting.

[0084] 5.2 Test time: September 20, 2023 to September 27, 2023, rice ripening period (before continuous rainfall).

[0085] 5.3 Test site: Fengezhen, Taixing City, Jiangsu Province.

[0086] 5.4 Test object: Nangeng 5055, 158 days of growth period, early-maturing late indica type.

[0087] 5.5 Test design:

[0088] Table 7

[0089]

[0090] 5.6 Test method: same as 3.6 of Example 3.

[0091] 5.7 Experimental results:

[0092] Table 8. Safety evaluation

[0093]

[0094] As can be seen from Table 8, the drug use amount of treatments 1 to 7 has no effect on the safety of rice crops, and no phytotoxicity phenomenon is shown.

[0095] Table 9. Results of rice bud sprouting inhibition test

[0096]

[0097] As can be seen from the experimental data in Table 9, the concentration of copper preparation has a certain effect on the bud inhibition of rice, and the trend is similar to that of enzyme preparation. The bud inhibition rate, yield increase rate and amylose content of treatments 1 to 7 are all improved with the increase of copper preparation.

[0098] Example 6 Wheat Bud Sprouting Inhibition Test of Different Agents

[0099] 6.1 Purpose of the test: to investigate the effect of different agents and drug use amount on wheat bud sprouting.

[0100] 6.2 Test time: June 3, 2024 to June 11, 2024, wheat ripening period (before continuous rainfall).

[0101] 6.3 Test site: Li County, Baoding City, Hebei Province.

[0102] 6.4 Test object: Qimin 17, growth period 232 days, plant height 76.6 cm.

[0103] 6.5 Test agents: 8% p-chlorophenoxyacetic acid sodium soluble powder (Example 1), 10% S-antibiotic soluble solution, provided by Sichuan Runer Technology Co., Ltd.; 40% ethylene soluble solution, provided by Sichuan Runer Technology Co., Ltd.

[0104] 6.6 Test design:

[0105] Table 10

[0106]

[0107] 6.7 Test method: refer to 3.6 of Example 3.

[0108] 6.8 Experimental results:

[0109] Table 11. Safety evaluation of wheat test

[0110]

[0111] The use of 8% sodium p-chlorophenoxyacetic acid soluble powder at the wheat ripening stage is safe. The use of 40% ethylene soluble solution at 2000 ppm has slight leaf and earlet scorching, and no obvious grain shedding. The use of 40% ethylene soluble solution at 4000 ppm has obvious leaf and earlet scorching, and slight grain shedding. The use of 10% S-antibiotic soluble solution at 400 ppm has slight leaf and earlet scorching, and no obvious grain shedding.

[0112] Table 12. Wheat bud sprouting inhibition test results

[0113]

[0114] As can be seen from the table, the use of 8% sodium p-chlorophenoxyacetic acid soluble powder, 40% ethylene soluble solution, and 10% S-antibiotic soluble solution on wheat has a better effect on inhibiting the sprouting of wheat buds, and the overall trend is that the higher the concentration of the agent, the more obvious the bud inhibition effect. In terms of yield, 40% ethylene soluble solution and 10% S-antibiotic soluble solution have no obvious promoting effect on yield increase, and 8% sodium p-chlorophenoxyacetic acid soluble powder 20 ppm and 40 ppm have obvious promoting effect on wheat yield. All agents at high concentrations have a negative impact on wheat yield, causing a certain degree of yield reduction. Among all treatments, 8% sodium p-chlorophenoxyacetic acid soluble powder has the most significant bud inhibition effect and yield increase effect on wheat.

[0115] Example 7 Different agents for inhibiting rice bud sprouting test

[0116] 7.1 Purpose of the test: To investigate the effect of different agents and drug dosages on rice bud sprouting.

[0117] 7.2 Test time: September 25, 2024, late grain filling stage (ripening stage).

[0118] 7.3 Test site: Fengezhen, Taixing City, Jiangsu Province.

[0119] 7.4 Test object: Nangeng 5055, 158 days of growth, early-maturing late indica type.

[0120] 7.5 Test agents: 8% sodium p-chlorophenoxyacetic acid soluble powder (Example 1), 10% S-antibiotic soluble solution, provided by Sichuan Runer Technology Co., Ltd.; 40% ethylene soluble solution, provided by Sichuan Runer Technology Co., Ltd.

[0121] 7.6 Test design:

[0122] Table 13

[0123]

[0124] 7.7 Test Method: Same as 3.6 of Example 3.

[0125] 7.8 Test Results:

[0126] Table 14. Safety Evaluation of Rice Test

[0127]

[0128] Using 8% sodium p-chlorophenoxyacetic acid soluble powder on rice at 80 ppm, the leaves and ears had slight scorching, and the rice grains did not have obvious shedding. Using 40% ethephon soluble solution at 2000 ppm, the leaves and ears had slight scorching, and the rice grains did not have obvious shedding. Using 40% ethephon soluble solution at 4000 ppm, the leaves and ears had obvious scorching, and the rice grains had slight shedding. Using 10% S-antibiotic soluble solution at 400 ppm, the leaves and ears had slight scorching, and the rice grains did not have obvious shedding.

[0129] Table 15. Inhibition of Ear Germination Test Results of Rice

[0130]

[0131] Using 8% sodium p-chlorophenoxyacetic acid soluble powder, 40% ethephon soluble solution, and 10% S-antibiotic soluble solution on rice had certain effect on inhibiting the germination of rice ears, and the overall trend showed that the higher the concentration, the more obvious the effect. In terms of yield, 40% ethephon soluble solution and 10% S-antibiotic soluble solution had no obvious promoting effect on yield, 8% sodium p-chlorophenoxyacetic acid soluble powder 40 ppm had obvious promoting effect on rice yield, and all agents had negative impact on rice yield at high concentration, causing a certain degree of yield reduction. Among all treatments, 8% sodium p-chlorophenoxyacetic acid soluble powder had the most significant effect on inhibiting the germination of rice ears and increasing yield.

[0132] Example 8 Residual Experiment of Soluble Powder Inhibiting Wheat and Rice Ear Germination

[0133] According to the results of Example 6 and Example 7, the optimal effective concentration of sodium p-chlorophenoxyacetate for inhibiting ear germination was 40 ppm, which had good effect on inhibiting ear germination and also had obvious effect on increasing yield. Residual detection was carried out on the seeds after air-drying and harvesting.

[0134] According to the provisions of "GB2763.1-2022 Food Safety National Standard Maximum Residue Limits of 112 Pesticides in Food", the maximum residue limit of sodium p-chlorophenoxyacetate is 0.05 mg / kg.

[0135] Therefore, the maximum residue limit of sodium p-chlorophenoxyacetate in rice and wheat is set to 0.05 mg / kg.

[0136] Detection method: refer to the detection method of SNT 3725-2013 grain, beans, tea detection.

[0137] Detection results:

[0138] Table 16

[0139]

[0140] The above are only preferred embodiments of the present application, it should be noted that the above preferred embodiments should not be considered as limiting the present application, the protection scope of the present application should be limited by the scope defined by the claims. For ordinary skilled in the art, without departing from the spirit and scope of the present application, can also make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A pesticide composition for inhibiting ear sprouting, characterized in that, The composition comprises, by weight, 2-8 parts of sodium p-chlorophenoxyacetate, 10-50 parts of enzyme preparation, and 10-50 parts of copper sulfate, wherein the enzyme preparation is lysozyme and chitinase in a weight ratio of 1:

1.

2. A pesticide formulation for inhibiting ear sprouting, characterized in that, Includes the pesticide composition of claim 1 and pharmaceutically acceptable excipients.

3. The pesticide formulation according to claim 2, characterized in that, The excipients include any one or more of the following: solvents, wetting agents, dispersants, antifreeze agents, thickeners, disintegrants, fillers, and nutrients.

4. The pesticide formulation according to claim 2, characterized in that, The formulation of the pesticide includes any one of the following: soluble concentrate, suspension concentrate, soluble powder, and water-dispersible granules.

5. The use of a pesticide composition according to claim 1 or a pesticide formulation according to any one of claims 2 to 4 in inhibiting crop ear sprouting.

6. The application according to claim 5, characterized in that, The effective components of the pesticide composition are: sodium p-chlorophenoxyacetate at a concentration of 10-40 ppm, enzyme at a concentration of 50-250 ppm, and copper sulfate at a concentration of 50-250 ppm.

7. The application according to claim 5, characterized in that, The crop is rice or wheat.

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