Celastrus angulatus smoke agent and application thereof
By using 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% harm to the environment and the human body was solved by using 0.7% tobacco pesticides, and the effective and environmentally friendly preparation of 0.7% tobacco pesticides was achieved, especially for greenhouse cucumber whiteflies.
Patent Information
- Application Number
- CN202411166255.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-05-06
AI Technical Summary
Among the existing tobacco pesticides, chemical pesticides are more harmful to the environment and the human body, and there are few reports of tobacco pesticides with plant-source pesticides as active ingredients, which are difficult to meet the needs of environmental protection and efficient prevention and control.
The 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.
It significantly improves the tobacco rate and has excellent control effects on greenhouse cucumber whiteflies. In particular, the prevention effect of tobacco 9 against whiteflies reaches 95.4%, meeting the needs of environmental protection and efficient control.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention belongs to the field of pesticide preparations, and particularly relates to a celangulin smoke agent and application thereof. Background Art
[0002] While the pesticide industry brings huge benefits to mankind, it also causes great damage to the living environment of mankind. With the improvement of people's environmental awareness, countries have imposed various restrictions on the development of pesticides from the perspective of legislation. These restrictions have a fundamental impact on the development trend of pesticides. Specifically in the field of pesticide processing, in addition to paying attention to the toxicity of the active ingredients themselves, the public has also put forward higher requirements for the safety of inert components in the preparations. Therefore, the development of new formulations with low toxicity for existing varieties has become a hot research topic. Among the many pesticide formulation products, smoke agents are unique for their unique application method and distinctive product characteristics. In recent years, with the expansion of protected areas, plastic greenhouse technology has become very popular in rural areas, and people's demand for smoke agent products has also increased sharply.
[0003] Smoke agent, also known as fumigant, is an advantageous formulation for controlling pests and diseases of greenhouse crops. The research on smoke agents in my country began in the 1950s and reached its peak in the 1990s. Smoke agent is a pesticide preparation made by mixing the main agent (active ingredient, i.e., pesticide original drug) with a heating agent (fuel, combustion aid and auxiliary agent). After being ignited by a fuse, the main agent in the smoke agent is heated and volatilized or sublimated, and dispersed and suspended in the air. Smoke agents are simple to operate, do not require any equipment, are economical and convenient, and have stable effects. They play an important role in the control of pests and diseases in water-scarce areas such as greenhouses and forests. At present, smoke agent pesticides with chemical pesticides as active ingredients have occupied a place in the market. However, chemical pesticides have limitations, such as greater harm to the environment and human body. Therefore, plant-based pesticides can be used to replace chemical pesticides. However, there are few reports on smoke agent pesticides with plant-based pesticides as active ingredients.
[0004] Celastrus dahliae is a perennial vine plant of the Celastraceae family, which is widely distributed in the hills and mountains of the Yellow River and Yangtze River basins in my country. Studies have found that the insecticidal active ingredients of Celastrus dahliae have anesthetic, stomach poison, antifeedant and contact effects, and have strong insecticidal activity, are not easy to develop drug resistance, do not kill natural enemies, and have stable physical and chemical properties. Celastrus dahliae is one of the main insecticidal active ingredients of Celastrus dahliae. Lu Qiang et al. (Preliminary screening of the best formula of Celastrus dahliae smoke agent, Journal of Gansu Agricultural University) reported the formula screening of Celastrus dahliae smoke agent. The results of indoor efficacy determination showed that when the amount of smoke agent reached 8g, the mortality rate of the tested diamondback moth reached 100% after 7 days of medication. The above results show that all indicators of the experimentally prepared Celastrus dahliae smoke agent meet the technical requirements for smoke agent production, and can be further tested for efficacy in greenhouses. The pesticide registration certificate No. PD20211835 of Anlin Biochemical Co., Ltd., Anyang City, Henan Province, discloses a 0.5% Celastrus dahliae smoke agent. In actual production applications, it was found that neither the smoke agent formula in journal literature nor the registered 0.5% celangulin smoke agent formula could achieve satisfactory protection effects in greenhouses, and targeted improvements were needed on the smoke agent formula. Summary of the invention
[0005] The object of the present invention is to provide a celangulin smoke agent and its application, and the specific technical scheme is as follows:
[0006] A celangulin smoke agent, comprising the following components in percentage by weight: 0.1-2% celangulin, 20-45% fuel, 5-25% oxygen supply agent, 5-15% smoke agent, 0.5-2% binder, and 100% flame retardant;
[0007] Preferably, the composition comprises the following weight percentages: 0.1-1% of celangulin, 20-40% of fuel, 5-20% of oxygen supply agent, 8-12% of smoke generator, 0.5-1.5% of binder, and 100% of flame retardant;
[0008] The fuel is one or more of lactose, coal powder, and sawdust;
[0009] The oxygen supply agent is one or more of ammonium nitrate, potassium nitrate and potassium chlorate;
[0010] The smoke generating agent is one or more of ammonium chloride, naphthalene, ammonium bicarbonate, and ammonium sulfate;
[0011] The binder is CMC-Na;
[0012] The flame retardant is talcum powder.
[0013] Preferably, the fuel in the celangulin smoke agent is composed of lactose, coal powder and sawdust; the oxygen supply agent is composed of ammonium nitrate and potassium chlorate; and the smoke generating agent is composed of ammonium chloride and ammonium bicarbonate. The mass ratio of lactose, coal powder and sawdust is 1-3:1-5:1-4; the mass ratio of ammonium nitrate and potassium chlorate is 1-5:1-3; the mass ratio of ammonium chloride and ammonium bicarbonate is 4-10:1-6. Further preferably, the mass ratio of lactose, coal powder and sawdust is 1:3:2; the mass ratio of ammonium nitrate and potassium chlorate is 4:1, and the mass ratio of ammonium chloride and ammonium bicarbonate is 7:3.
[0014] The invention provides a celangulin smoke agent, which comprises the following components in percentage by weight: 0.5% of celangulin, 6% of lactose, 18% of coal powder, 12% of sawdust, 8% of ammonium nitrate, 2% of potassium chlorate, 7% of ammonium chloride, 3% of ammonium bicarbonate, 1% of CMC-Na, and talcum powder making up to 100%.
[0015] The celangulin smoke agent is used for preventing and controlling crop pests, and has an excellent control effect on cucumber whiteflies in particular.
[0016] By adopting the above technical solution, the present invention has the following beneficial effects:
[0017] The selection of each component in the smoke agent will have a great impact on the smoke formation rate of the smoke agent. When the fuel is selected as a combination of lactose, coal powder and sawdust, the oxygen supply agent is a combination of ammonium nitrate and potassium chlorate, and the smoke agent is a combination of ammonium chloride and ammonium bicarbonate, the smoke formation rate of the smoke agent can be significantly improved.
[0018] The 0.5% celangulin smoke agent prepared by the invention has excellent control effect on greenhouse cucumber whitefly, especially the control effect of smoke agent 9 on greenhouse cucumber whitefly is 95.4%. DETAILED DESCRIPTION
[0019] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.
[0020] The present invention is further explained below in conjunction with specific implementation modes.
[0021] Example 10.5% Celangulin Smoke Preparation
[0022] Test materials: celangulin technical, fuel (lactose, coal powder, sawdust), oxygen supply agent (ammonium nitrate, potassium nitrate, potassium chlorate), smoke generator (ammonium chloride, naphthalene, ammonium bicarbonate, ammonium sulfate), binder (CMC-Na), flame retardant (talc); all the above materials were purchased from the market.
[0023] Test formula: as shown in Table 1.
[0024] Table 1: 0.5% celangulin smoke formulation
[0025]
[0026]
[0027] Preparation method: According to the weight percentage of the raw materials in Table 1, mix the original drug, auxiliary agents, etc. evenly in proportion, add an appropriate amount of water, mix evenly and then granulate, dry the wet granules and then sieve.
[0028] Example 20.5% celangulin smoke agent quality control index test
[0029] Test method:
[0030] Determination of loss on drying: 4.7 in HG / T 2467.18-2003;
[0031] Determination of pH value: GB / T 1601-1993;
[0032] Determination of natural temperature: 4.9 in HG / T 2467.18-2003;
[0033] Determination of smoke rate: HG / T 2467.18-2003 4.10;
[0034] Ignition test and determination of burning and smoking time:
[0035] Weigh 50.0g of the sample and place it in a sheltered place to ignite it. If there is no flame, no extinguishing, and uniform combustion during the combustion process, and no embers are left after combustion, the ignition test is qualified. Use a stopwatch to test the time from the time the sample is ignited and smokes to the time when it stops smoking, which is the combustion and smoke time.
[0036] Dry sieving test: carried out according to the "dry sieving method" in GB / 16150;
[0037] Hot storage stability: GB / T 19136.
[0038] Results and Analysis:
[0039] A reasonable and efficient smoke agent must be able to produce a large amount of smoke during the application process. Usually, the dispersion system of solid particles of 0.5 to 5.0 μm suspended in the gas is called "smoke"; the dispersion system of liquid particles of 1 to 50 μm suspended in the gas is called "fog". The former is mainly composed of the main agent, and the latter is mainly composed of water produced by combustion.
[0040] From the comparative analysis of smoke agents 1-10 in Table 2, it can be seen that the selection of each component in the smoke agent will have a great impact on the smoke formation rate of the smoke agent. When the fuel is selected as a combination of lactose, coal powder and sawdust, the oxygen supply agent is a combination of ammonium nitrate and potassium chlorate, and the smoke agent is a combination of ammonium chloride and ammonium bicarbonate, the smoke formation rate of the smoke agent can be significantly improved. In addition, when the mass ratio of lactose, coal powder and sawdust in smoke agent 9 is 1:3:2, the mass ratio of ammonium nitrate and potassium chlorate is 4:1, and the mass ratio of ammonium chloride and ammonium bicarbonate is 7:3, its smoke formation rate is 98.4%.
[0041] Table 2: 0.5% celangulin smoke quality: index
[0042]
[0043]
[0044] Example 3 Test on the efficacy of 0.5% celangulin smoke spray against greenhouse cucumber whitefly
[0045] Test pest: greenhouse whitefly, host is cucumber.
[0046] Test method: The test was conducted with one application of pesticides. The cucumbers were in the peak period of fruiting and the greenhouse whiteflies were in the early stage of adult emergence. When applying pesticides, the dosage of each plot was calculated according to the experimental design, and then the pesticides in each plot were evenly divided into two parts, and placed at two points in the middle of the plot (with a certain distance between the two points) so that the smoke was evenly distributed in the room. In the evening, the greenhouse was closed, and then the smoke was ignited in each plot at the same time. The film was removed for ventilation after 9:00 am the next day.
[0047] Survey method: Five-point sampling method was adopted. Twelve cucumber plants were fixed as survey plants at each sampling point. Five leaves were counted from the top of each survey plant, and the number of adults on the leaves above the mark was recorded. The insect population base was investigated before spraying, and the number of live insects was investigated 7 days after spraying. The control effect was compared with the corrected insect population reduction rate, and the insect population reduction rate and corrected control effect were calculated.
[0048] Insect population reduction rate (%) = (number of live insects before medication - number of live insects after medication) / number of live insects before medication × 100;
[0049] Corrected control efficacy (%) = (treatment insect population reduction rate - control insect population reduction rate) / (1-control insect population reduction rate)×100.
[0050] Results and Analysis:
[0051] The 0.5% celangulin smoke agent prepared by the invention has excellent control effect on greenhouse cucumber whitefly, especially the control effect of smoke agent 9 on greenhouse cucumber whitefly is 95.4%.
[0052] Table 3: Control effect of 0.5% celangulin smoke on greenhouse cucumber whitefly
[0053]
[0054] Note: Positive control: 0.5% celangulin smoke (PD20211835)
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit it.
Claims
1. A celangulin smoke agent, characterized in that: The composition comprises the following weight percentages: 0.1-2% of celangulin, 20-45% of fuel, 5-25% of oxygen supply agent, 5-15% of smoke generating agent, 0.5-2% of binder, and 100% of flame retardant; The fuel is one or more of lactose, coal powder, and sawdust; The oxygen supply agent is one or more of ammonium nitrate, potassium nitrate and potassium chlorate; The smoke generating agent is one or more of ammonium chloride, naphthalene, ammonium bicarbonate, and ammonium sulfate; The binder is CMC-Na; The flame retardant is talcum powder.
2. The celangulin smoke agent according to claim 1, characterized in that The fuel consists of lactose, coal powder and sawdust; the oxygen supply agent consists of ammonium nitrate and potassium chlorate; and the smoke generator consists of ammonium chloride and ammonium bicarbonate.
3. The celangulin smoke agent according to claim 2, characterized in that The mass ratio of lactose, coal powder and sawdust is 1-3:1-5:1-4; the mass ratio of ammonium nitrate and potassium chlorate is 1-5:1-3; the mass ratio of ammonium chloride and ammonium bicarbonate is 4-10:1-6.
4. The celangulin smoke agent according to claim 3, characterized in that The mass ratio of lactose, coal powder and sawdust is 1:3:2; the mass ratio of ammonium nitrate and potassium chlorate is 4:1, and the mass ratio of ammonium chloride and ammonium bicarbonate is 7:
3.
5. The celangulin smoke agent according to claim 4, characterized in that The invention comprises the following ingredients in percentage by weight: 0.5% of celangulin, 6% of lactose, 18% of coal powder, 12% of sawdust, 8% of ammonium nitrate, 2% of potassium chlorate, 7% of ammonium chloride, 3% of ammonium bicarbonate, 1% of CMC-Na, and talc powder making up to 100%.
6. Use of the celangulin smoke agent according to any one of claims 1 to 5 for controlling crop pests.
7. The use according to claim 6, characterized in that The crop pest is cucumber whitefly.