CN108651102B - Preparation method of liquid plant protective film - Google Patents
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- CN108651102B CN108651102B CN201810306247.4A CN201810306247A CN108651102B CN 108651102 B CN108651102 B CN 108651102B CN 201810306247 A CN201810306247 A CN 201810306247A CN 108651102 B CN108651102 B CN 108651102B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G2013/004—Liquid mulch
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Abstract
The invention discloses a preparation method of a liquid plant protection film, and belongs to the technical field of plant protection. According to the invention, 20-30 parts of beeswax, 10-20 parts of plant essential oil, 10-20 parts of glycerol and 10-20 parts of linseed oil are heated, stirred and mixed according to parts by weight to obtain No. 1 mixed solution; ultrasonically dispersing 20-30 parts of gelatin solution, 10-20 parts of insect juice, 20-30 parts of chitosan liquid, 8-10 parts of sepiolite, 8-10 parts of carbomer, 10-20 parts of polyethyleneimine and 60-80 parts of water according to parts by weight to obtain No. 2 mixed solution; and heating, stirring and mixing 40-50 parts by weight of No. 1 mixed solution, 60-70 parts by weight of No. 2 mixed solution and 8-10 parts by weight of emulsifier to obtain the liquid plant protective film. The liquid plant protection film provided by the invention has an excellent protection effect on plants.
Description
Technical Field
The invention discloses a preparation method of a liquid plant protection film, and belongs to the technical field of plant protection.
Background
Melon flies are an important quarantine pest worldwide, originate in India, and are widely distributed in more than 30 countries and regions in tropical, subtropical and temperate regions. The melon flies lay eggs in fruits or other soft tissues through adults, and the larvae eat inside the fruits after hatching, so that the fruits are deformed, yellowed, rotted, shed and the like. The Bactrocera cucurbitae has wide hosts, and the hosts are as high as 120, so that serious social and economic losses are caused. At present, the prevention and control of Bactrocera cucurbitae has become a research focus and a hot spot in many countries.
In some specific areas, the insect sterility technology is adopted to control the melon flies, namely, a large number of sterile male insects of the melon flies are released to mate with wild female insects, no progeny is generated, the population of the melon flies is gradually reduced, and even the population is eradicated. Among them, by releasing a large amount of sterile males in japan and usa, melon flies in various regions are basically eradicated; parasitic wasps such as the Alishan agrichia cochinchinensis, the Frankia furiosaefolia and the like are released, and certain control effect is achieved in certain areas of America and India. In China, the application of chemical pesticides is still a main means for preventing and controlling melon flies. As most hosts of the Bactrocera cucurbitae are melons and fruits and vegetables which are picked continuously and grow continuously, the pesticide is easily sprayed on fruits in the picking period in the pesticide using process, so that pesticide residues exceed the standard. Furthermore, the use of large amounts of chemical pesticides results in the development of varying degrees of resistance in melon flies. Therefore, a new safe and effective control measure for bactrocera cucurbitae is urgently needed to be found.
The liquid plant protective film is a viscous water emulsion prepared by extracting and emulsifying natural substances, and is safe to the environment. After being diluted by water, the water-soluble organic fertilizer is sprayed on the surface of a plant to form a protective film, thereby playing the roles of preventing insects and diseases. The field pesticide effect test shows that the sprayed liquid plant protective film has good control effect on aphids and loquat gray leaf spot. However, the conventional liquid plant protection film still has a problem of poor plant protection effect, and thus research on the conventional liquid plant protection film is also needed.
Disclosure of Invention
The invention mainly solves the technical problems that: aiming at the problem that the traditional liquid plant protection film has poor protection effect on plants, the preparation method of the liquid plant protection film is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
(1) according to the weight parts, 20-30 parts of beeswax, 10-20 parts of plant essential oil, 10-20 parts of glycerol and 10-20 parts of linseed oil are heated, stirred and mixed to obtain No. 1 mixed liquid;
(2) ultrasonically dispersing 20-30 parts of gelatin solution, 10-20 parts of insect juice, 20-30 parts of chitosan liquid, 8-10 parts of sepiolite, 8-10 parts of carbomer, 10-20 parts of polyethyleneimine and 60-80 parts of water according to parts by weight to obtain No. 2 mixed solution;
(3) and heating, stirring and mixing 40-50 parts by weight of No. 1 mixed solution, 60-70 parts by weight of No. 2 mixed solution and 8-10 parts by weight of emulsifier to obtain the liquid plant protective film.
The plant essential oil in the step (1) is any one of lavender essential oil, schisandra essential oil, white chrysanthemum essential oil or rosemary essential oil.
The preparation process of the gelatin solution in the step (2) comprises the following steps: mixing gelatin powder and water according to a mass ratio of 1: 50-1: 100, standing and swelling, and heating, stirring and mixing to obtain the gelatin solution.
The preparation process of the insect juice in the step (2) comprises the following steps: according to the weight parts, 10-20 parts of melon flies, 10-20 parts of aphids and 30-40 parts of water are mixed and squeezed to obtain juice, and the juice is filtered and subjected to microwave treatment to obtain the insect juice.
The preparation process of the chitosan liquid in the step (2) comprises the following steps: mixing chitosan and water according to a mass ratio of 1: 50-1: 100, standing and swelling, and heating, stirring and mixing to obtain the chitosan liquid.
The carbomer in the step (2) is any one of carbomer 734P, carbomer 740P or carbomer 710P.
And (3) the emulsifier is any one of sodium dodecyl benzene sulfonate, sodium polyacrylate, tween-60 or span-80.
The invention has the beneficial effects that:
(1) according to the invention, by adding the beeswax and the plant essential oil, in the use process, firstly, beeswax particles are dispersed in a three-dimensional network formed by interpenetration crosslinking of gelatin and chitosan, so that micropores exist in the formed protective film, thereby improving the air permeability of the film, secondly, the beeswax and the plant essential oil can occupy the positions of partial functional groups in the gelatin and chitosan crosslinking network, so that the vibration strength of covalent bonds in crosslinking network molecules is reduced, the mechanical property of the product is improved, meanwhile, hydrophilic free radicals in the film can be reduced, the waterproof property of the film is further improved, the moisture is prevented from being accumulated on the surface of a plant, the breeding of bacteria is effectively reduced, and the protection of the film is further improved;
(2) according to the invention, by adding polyethyleneimine, in the using process, at night, because the polyethyleneimine contains primary amino active groups, covalent crosslinking can be carried out on the polyethyleneimine and carbon dioxide formed in the plant respiration process, so that a three-dimensional network structure is formed to enhance the strength of the protective film, and in the daytime, because the temperature is higher, the polyethyleneimine absorbing carbon dioxide can release carbon dioxide, and the released carbon dioxide promotes the photosynthesis of plants, so that the growth of the plants is promoted;
(3) according to the invention, by using the insect juice, in the using process, the insect juice is used as a biological threat signal to promote plant cell activation and carry out tissue regeneration, the regenerated tissue can be filled in a three-dimensional network formed by interpenetration and crosslinking of gelatin and chitosan, so that the early-stage protection effect is achieved, and along with the growth of plants, the plant regenerated tissue gradually replaces the three-dimensional network formed by crosslinking of gelatin and chitosan, so that the long-term protection effect is achieved.
Detailed Description
Mixing gelatin powder and water according to a mass ratio of 1: 50-1: adding 100 into a No. 1 beaker, stirring and mixing for 20-30 min by using a glass rod, standing and swelling for 3-4 h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 40-50 min under the conditions that the temperature is 90-95 ℃ and the rotating speed is 400-500 r/min to obtain a gelatin solution; placing 10-20 parts of melon flies, 10-20 parts of aphids and 30-40 parts of water in a juicer by weight, mixing and juicing to obtain mixed juice, filtering the mixed juice to obtain filtrate, placing the filtrate in a microwave oven, and performing microwave treatment for 10-20 min under the condition that the microwave frequency is 2200-2455 MHz to obtain insect juice; mixing chitosan and water according to a mass ratio of 1: 50-1: adding 100 of the chitosan solution into a No. 2 beaker, stirring and mixing the mixture by using a glass rod for 20-30 min, standing and swelling the mixture for 3-4 h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 40-50 min under the conditions that the temperature is 90-95 ℃ and the rotating speed is 400-500 r/min to obtain a shell polysaccharide solution; according to the weight parts, 20-30 parts of beeswax, 10-20 parts of plant essential oil, 10-20 parts of glycerol and 10-20 parts of linseed oil are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant temperature magnetic stirrer, and the materials are heated, stirred and mixed for 30-50 min under the conditions that the temperature is 60-70 ℃ and the rotating speed is 200-300 r/min, so that No. 1 mixed liquid is obtained; according to the weight parts, 20-30 parts of gelatin solution, 10-20 parts of insect juice, 20-30 parts of chitosan liquid, 8-10 parts of sepiolite, 8-10 parts of carbomer, 10-20 parts of polyethyleneimine and 60-80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 40-60 min under the condition that the ultrasonic frequency is 55-75 kHz, so that No. 2 mixed solution is obtained; according to the weight parts, 40-50 parts of No. 1 mixed liquid, 60-70 parts of No. 2 mixed liquid and 8-10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 30-50 min under the conditions that the temperature is 40-60 ℃ and the rotating speed is 300-500 r/min. The plant essential oil is any one of lavender essential oil, schisandra essential oil, white chrysanthemum essential oil or rosemary essential oil. The carbomer is any one of carbomer 734P, carbomer 740P or carbomer 710P. The emulsifier is any one of sodium dodecyl benzene sulfonate, sodium polyacrylate, tween-60 or span-80.
Mixing gelatin powder and water according to a mass ratio of 1: 100, adding the mixture into a No. 1 beaker, stirring and mixing the mixture for 30min by using a glass rod, standing and swelling the mixture for 4h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain gelatin solution; placing 20 parts of melon flies, 20 parts of aphids and 40 parts of water in a juicer by weight, mixing and juicing to obtain mixed juice, filtering the mixed juice to obtain filtrate, placing the filtrate in a microwave oven, and performing microwave treatment for 20min under the condition that the microwave frequency is 2455MHz to obtain insect juice; mixing chitosan and water according to a mass ratio of 1: 100, adding into a No. 2 beaker, stirring and mixing for 30min by using a glass rod, standing and swelling for 4h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain a chitosan liquid; according to the weight parts, 30 parts of beewax, 20 parts of plant essential oil, 20 parts of glycerol and 20 parts of linseed oil are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant temperature magnetic stirrer, and the mixture is heated, stirred and mixed for 50min under the conditions that the temperature is 70 ℃ and the rotating speed is 300r/min to obtain No. 1 mixed solution; according to the weight parts, 30 parts of gelatin solution, 20 parts of insect juice, 30 parts of chitosan solution, 10 parts of sepiolite, 10 parts of carbomer, 20 parts of polyethyleneimine and 80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 60min under the condition that the ultrasonic frequency is 75kHz, so as to obtain No. 2 mixed solution; according to the weight parts, 50 parts of No. 1 mixed liquid, 70 parts of No. 2 mixed liquid and 10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 50min under the conditions that the temperature is 60 ℃ and the rotating speed is 500 r/min. The plant essential oil is lavender essential oil. The carbomer is carbomer 734P. The emulsifier is sodium dodecyl benzene sulfonate.
Mixing gelatin powder and water according to a mass ratio of 1: 100, adding the mixture into a No. 1 beaker, stirring and mixing the mixture for 30min by using a glass rod, standing and swelling the mixture for 4h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain gelatin solution; placing 20 parts of melon flies, 20 parts of aphids and 40 parts of water in a juicer by weight, mixing and juicing to obtain mixed juice, filtering the mixed juice to obtain filtrate, placing the filtrate in a microwave oven, and performing microwave treatment for 20min under the condition that the microwave frequency is 2455MHz to obtain insect juice; mixing chitosan and water according to a mass ratio of 1: 100, adding into a No. 2 beaker, stirring and mixing for 30min by using a glass rod, standing and swelling for 4h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain a chitosan liquid; according to the weight parts, 20 parts of plant essential oil, 20 parts of glycerol and 20 parts of linseed oil are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the mixture is heated, stirred and mixed for 50min under the conditions that the temperature is 70 ℃ and the rotating speed is 300r/min to obtain No. 1 mixed solution; according to the weight parts, 30 parts of gelatin solution, 20 parts of insect juice, 30 parts of chitosan solution, 10 parts of sepiolite, 10 parts of carbomer, 20 parts of polyethyleneimine and 80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 60min under the condition that the ultrasonic frequency is 75kHz, so as to obtain No. 2 mixed solution; according to the weight parts, 50 parts of No. 1 mixed liquid, 70 parts of No. 2 mixed liquid and 10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 50min under the conditions that the temperature is 60 ℃ and the rotating speed is 500 r/min. The plant essential oil is lavender essential oil. The carbomer is carbomer 734P. The emulsifier is sodium dodecyl benzene sulfonate.
Mixing gelatin powder and water according to a mass ratio of 1: 100, adding the mixture into a No. 1 beaker, stirring and mixing the mixture for 30min by using a glass rod, standing and swelling the mixture for 4h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain gelatin solution; placing 20 parts of melon flies, 20 parts of aphids and 40 parts of water in a juicer by weight, mixing and juicing to obtain mixed juice, filtering the mixed juice to obtain filtrate, placing the filtrate in a microwave oven, and performing microwave treatment for 20min under the condition that the microwave frequency is 2455MHz to obtain insect juice; mixing chitosan and water according to a mass ratio of 1: 100, adding into a No. 2 beaker, stirring and mixing for 30min by using a glass rod, standing and swelling for 4h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain a chitosan liquid; according to the weight parts, 30 parts of beewax, 20 parts of glycerol and 20 parts of linseed oil are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the mixture is heated, stirred and mixed for 50min under the conditions that the temperature is 70 ℃ and the rotating speed is 300r/min to obtain No. 1 mixed solution; according to the weight parts, 30 parts of gelatin solution, 20 parts of insect juice, 30 parts of chitosan solution, 10 parts of sepiolite, 10 parts of carbomer, 20 parts of polyethyleneimine and 80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 60min under the condition that the ultrasonic frequency is 75kHz, so as to obtain No. 2 mixed solution; according to the weight parts, 50 parts of No. 1 mixed liquid, 70 parts of No. 2 mixed liquid and 10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 50min under the conditions that the temperature is 60 ℃ and the rotating speed is 500 r/min. The carbomer is carbomer 734P. The emulsifier is sodium dodecyl benzene sulfonate.
Mixing gelatin powder and water according to a mass ratio of 1: 100, adding the mixture into a No. 1 beaker, stirring and mixing the mixture for 30min by using a glass rod, standing and swelling the mixture for 4h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain gelatin solution; placing 20 parts of melon flies, 20 parts of aphids and 40 parts of water in a juicer by weight, mixing and juicing to obtain mixed juice, filtering the mixed juice to obtain filtrate, placing the filtrate in a microwave oven, and performing microwave treatment for 20min under the condition that the microwave frequency is 2455MHz to obtain insect juice; mixing chitosan and water according to a mass ratio of 1: 100, adding into a No. 2 beaker, stirring and mixing for 30min by using a glass rod, standing and swelling for 4h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain a chitosan liquid; according to the weight parts, 30 parts of beewax, 20 parts of plant essential oil and 20 parts of linseed oil are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the mixture is heated, stirred and mixed for 50min under the conditions that the temperature is 70 ℃ and the rotating speed is 300r/min to obtain No. 1 mixed solution; according to the weight parts, 30 parts of gelatin solution, 20 parts of insect juice, 30 parts of chitosan solution, 10 parts of sepiolite, 10 parts of carbomer, 20 parts of polyethyleneimine and 80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 60min under the condition that the ultrasonic frequency is 75kHz, so as to obtain No. 2 mixed solution; according to the weight parts, 50 parts of No. 1 mixed liquid, 70 parts of No. 2 mixed liquid and 10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 50min under the conditions that the temperature is 60 ℃ and the rotating speed is 500 r/min. The plant essential oil is lavender essential oil. The carbomer is carbomer 734P. The emulsifier is sodium dodecyl benzene sulfonate.
Mixing gelatin powder and water according to a mass ratio of 1: 100, adding the mixture into a No. 1 beaker, stirring and mixing the mixture for 30min by using a glass rod, standing and swelling the mixture for 4h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain gelatin solution; placing 20 parts of melon flies, 20 parts of aphids and 40 parts of water in a juicer by weight, mixing and juicing to obtain mixed juice, filtering the mixed juice to obtain filtrate, placing the filtrate in a microwave oven, and performing microwave treatment for 20min under the condition that the microwave frequency is 2455MHz to obtain insect juice; mixing chitosan and water according to a mass ratio of 1: 100, adding into a No. 2 beaker, stirring and mixing for 30min by using a glass rod, standing and swelling for 4h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain a chitosan liquid; according to the weight parts, 30 parts of beewax, 20 parts of plant essential oil and 20 parts of glycerol are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the mixture is heated, stirred and mixed for 50min under the conditions that the temperature is 70 ℃ and the rotating speed is 300r/min to obtain No. 1 mixed solution; according to the weight parts, 30 parts of gelatin solution, 20 parts of insect juice, 30 parts of chitosan solution, 10 parts of sepiolite, 10 parts of carbomer, 20 parts of polyethyleneimine and 80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 60min under the condition that the ultrasonic frequency is 75kHz, so as to obtain No. 2 mixed solution; according to the weight parts, 50 parts of No. 1 mixed liquid, 70 parts of No. 2 mixed liquid and 10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 50min under the conditions that the temperature is 60 ℃ and the rotating speed is 500 r/min. The plant essential oil is lavender essential oil. The carbomer is carbomer 734P. The emulsifier is sodium dodecyl benzene sulfonate.
Mixing gelatin powder and water according to a mass ratio of 1: 100, adding the mixture into a No. 1 beaker, stirring and mixing the mixture for 30min by using a glass rod, standing and swelling the mixture for 4h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain gelatin solution; mixing chitosan and water according to a mass ratio of 1: 100, adding into a No. 2 beaker, stirring and mixing for 30min by using a glass rod, standing and swelling for 4h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain a chitosan liquid; according to the weight parts, 30 parts of beewax, 20 parts of plant essential oil, 20 parts of glycerol and 20 parts of linseed oil are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant temperature magnetic stirrer, and the mixture is heated, stirred and mixed for 50min under the conditions that the temperature is 70 ℃ and the rotating speed is 300r/min to obtain No. 1 mixed solution; according to the weight parts, 30 parts of gelatin solution, 30 parts of chitosan solution, 10 parts of sepiolite, 10 parts of carbomer, 20 parts of polyethyleneimine and 80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 60min under the condition that the ultrasonic frequency is 75kHz, so as to obtain No. 2 mixed solution; according to the weight parts, 50 parts of No. 1 mixed liquid, 70 parts of No. 2 mixed liquid and 10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 50min under the conditions that the temperature is 60 ℃ and the rotating speed is 500 r/min. The plant essential oil is lavender essential oil. The carbomer is carbomer 734P. The emulsifier is sodium dodecyl benzene sulfonate.
Mixing gelatin powder and water according to a mass ratio of 1: 100, adding the mixture into a No. 1 beaker, stirring and mixing the mixture for 30min by using a glass rod, standing and swelling the mixture for 4h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain gelatin solution; placing 20 parts of melon flies, 20 parts of aphids and 40 parts of water in a juicer by weight, mixing and juicing to obtain mixed juice, filtering the mixed juice to obtain filtrate, placing the filtrate in a microwave oven, and performing microwave treatment for 20min under the condition that the microwave frequency is 2455MHz to obtain insect juice; mixing chitosan and water according to a mass ratio of 1: 100, adding into a No. 2 beaker, stirring and mixing for 30min by using a glass rod, standing and swelling for 4h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain a chitosan liquid; according to the weight parts, 30 parts of beewax, 20 parts of plant essential oil, 20 parts of glycerol and 20 parts of linseed oil are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant temperature magnetic stirrer, and the mixture is heated, stirred and mixed for 50min under the conditions that the temperature is 70 ℃ and the rotating speed is 300r/min to obtain No. 1 mixed solution; according to the weight parts, 30 parts of gelatin solution, 20 parts of insect juice, 30 parts of chitosan solution, 10 parts of sepiolite, 20 parts of polyethyleneimine and 80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 60min under the condition that the ultrasonic frequency is 75kHz, so as to obtain No. 2 mixed solution; according to the weight parts, 50 parts of No. 1 mixed liquid, 70 parts of No. 2 mixed liquid and 10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 50min under the conditions that the temperature is 60 ℃ and the rotating speed is 500 r/min. The plant essential oil is lavender essential oil. The emulsifier is sodium dodecyl benzene sulfonate.
Mixing gelatin powder and water according to a mass ratio of 1: 100, adding the mixture into a No. 1 beaker, stirring and mixing the mixture for 30min by using a glass rod, standing and swelling the mixture for 4h, moving the No. 1 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving the mixture for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain gelatin solution; placing 20 parts of melon flies, 20 parts of aphids and 40 parts of water in a juicer by weight, mixing and juicing to obtain mixed juice, filtering the mixed juice to obtain filtrate, placing the filtrate in a microwave oven, and performing microwave treatment for 20min under the condition that the microwave frequency is 2455MHz to obtain insect juice; mixing chitosan and water according to a mass ratio of 1: 100, adding into a No. 2 beaker, stirring and mixing for 30min by using a glass rod, standing and swelling for 4h, moving the No. 2 beaker into a digital display speed measurement constant-temperature magnetic stirrer, and heating, stirring and dissolving for 50min under the conditions that the temperature is 95 ℃ and the rotating speed is 500r/min to obtain a chitosan liquid; according to the weight parts, 30 parts of beewax, 20 parts of plant essential oil, 20 parts of glycerol and 20 parts of linseed oil are placed in a No. 3 beaker, the No. 3 beaker is placed in a digital display speed measurement constant temperature magnetic stirrer, and the mixture is heated, stirred and mixed for 50min under the conditions that the temperature is 70 ℃ and the rotating speed is 300r/min to obtain No. 1 mixed solution; according to the weight parts, 30 parts of gelatin solution, 20 parts of insect juice, 30 parts of chitosan solution, 10 parts of sepiolite, 10 parts of carbomer and 80 parts of water are placed in a No. 4 beaker, the No. 4 beaker is placed in an ultrasonic dispersion instrument, and ultrasonic dispersion is carried out for 60min under the condition that the ultrasonic frequency is 75kHz, so as to obtain No. 2 mixed solution; according to the weight parts, 50 parts of No. 1 mixed liquid, 70 parts of No. 2 mixed liquid and 10 parts of emulsifier are placed in a single-neck flask, the single-neck flask is placed in a digital display speed measurement constant-temperature magnetic stirrer, and the liquid plant protective film is obtained by heating, stirring and mixing for 50min under the conditions that the temperature is 60 ℃ and the rotating speed is 500 r/min. The plant essential oil is lavender essential oil. The carbomer is carbomer 734P. The emulsifier is sodium dodecyl benzene sulfonate.
Comparative example: liquid plant protective film produced by Anhui institute of ecological technology.
The liquid plant protective films obtained in examples 1 to 8 and the comparative products were subjected to performance tests, and the specific test methods were as follows:
cutting fresh and undamaged bitter gourd into 6cm small segments, soaking in 0.5% sodium benzoate water solution for 5min, taking out, air drying, and wrapping the naked pulp with sealing film; diluting the protective film into 400 times of liquid by using clear water, and uniformly spraying the liquid on the cut bitter gourd sections; after the moisture on the surface of the balsam pear is evaporated, putting insect cages (35 cm long, 35cm wide and 35cm high) into each cage for 1 piece, putting 25 pairs of melon flies in the same batch and eclosion for 15-20 days in the insect cages in advance, providing enough clear water and feed (white sugar: yeast powder = 1: 1) for the melon flies to eat, recording the egg laying amount and death number of the melon flies after 48h, repeating the treatment for 3 times, and taking the average value. Specific detection results are shown in table 1:
table 1: performance test meter
| Detecting content | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 | Comparative example |
| Egg laying amount/granule | 0.33 | 4.04 | 3.62 | 3.25 | 4.12 | 3.21 | 2.98 | 3.50 | 6.31 |
| Mortality rate/%) | 11 | 7.2 | 6.9 | 8.3 | 8.4 | 9.1 | 6.7 | 7.5 | 5.9 |
As can be seen from the test results in Table 1, the liquid plant protective film obtained by the present invention has an excellent protective effect on plants.
Claims (7)
1. A preparation method of a liquid plant protection film is characterized by comprising the following specific preparation steps:
(1) according to the weight parts, 20-30 parts of beeswax, 10-20 parts of plant essential oil, 10-20 parts of glycerol and 10-20 parts of linseed oil are heated, stirred and mixed to obtain No. 1 mixed liquid;
(2) ultrasonically dispersing 20-30 parts of gelatin solution, 10-20 parts of insect juice, 20-30 parts of chitosan liquid, 8-10 parts of sepiolite, 8-10 parts of carbomer, 10-20 parts of polyethyleneimine and 60-80 parts of water according to parts by weight to obtain No. 2 mixed solution;
(3) and heating, stirring and mixing 40-50 parts by weight of No. 1 mixed solution, 60-70 parts by weight of No. 2 mixed solution and 8-10 parts by weight of emulsifier to obtain the liquid plant protective film.
2. The method for preparing a liquid plant protection film according to claim 1, wherein: the plant essential oil in the step (1) is any one of lavender essential oil, schisandra essential oil, white chrysanthemum essential oil or rosemary essential oil.
3. The method for preparing a liquid plant protection film according to claim 1, wherein: the preparation process of the gelatin solution in the step (2) comprises the following steps: mixing gelatin powder and water according to a mass ratio of 1: 50-1: 100, standing and swelling, and heating, stirring and mixing to obtain the gelatin solution.
4. The method for preparing a liquid plant protection film according to claim 1, wherein: the preparation process of the insect juice in the step (2) comprises the following steps: according to the weight parts, 10-20 parts of melon flies, 10-20 parts of aphids and 30-40 parts of water are mixed and squeezed to obtain juice, and the juice is filtered and subjected to microwave treatment to obtain the insect juice.
5. The method for preparing a liquid plant protection film according to claim 1, wherein: the preparation process of the chitosan liquid in the step (2) comprises the following steps: mixing chitosan and water according to a mass ratio of 1: 50-1: 100, standing and swelling, and heating, stirring and mixing to obtain the chitosan liquid.
6. The method for preparing a liquid plant protection film according to claim 1, wherein: the carbomer in the step (2) is any one of carbomer 734P, carbomer 740P or carbomer 710P.
7. The method for preparing a liquid plant protection film according to claim 1, wherein: and (3) the emulsifier is any one of sodium dodecyl benzene sulfonate, sodium polyacrylate, tween-60 or span-80.
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| CN1466883A (en) * | 2002-07-12 | 2004-01-14 | 上海三瑞化学有限公司 | Bi-component edible fruit and vegetable coating fresh-keeping agent and uses thereof |
| CN101326909A (en) * | 2008-07-04 | 2008-12-24 | 翟明芳 | Plant protection film agent |
| CN103392693A (en) * | 2013-08-07 | 2013-11-20 | 玉溪市维和生物技术有限责任公司 | Panax notoginseng seedling protection film, and preparation method and application thereof |
| CN107616220A (en) * | 2017-10-10 | 2018-01-23 | 陈建峰 | A kind of preserving fruit and vegetable utilizing plastics |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1466883A (en) * | 2002-07-12 | 2004-01-14 | 上海三瑞化学有限公司 | Bi-component edible fruit and vegetable coating fresh-keeping agent and uses thereof |
| CN101326909A (en) * | 2008-07-04 | 2008-12-24 | 翟明芳 | Plant protection film agent |
| CN103392693A (en) * | 2013-08-07 | 2013-11-20 | 玉溪市维和生物技术有限责任公司 | Panax notoginseng seedling protection film, and preparation method and application thereof |
| CN107616220A (en) * | 2017-10-10 | 2018-01-23 | 陈建峰 | A kind of preserving fruit and vegetable utilizing plastics |
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