Application of the hottest colored plastic film in

2022-07-31
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Application of colored plastic film in vegetable protection (Part I)

Abstract: This paper introduces the application of PVC yellow self-adhesive film and lkpe silver film in vegetable, flower and other cash crop plant protection and pest epidemic report. The reflected light produced by colored plastic film can affect the behavior and physiology of pests and make them avoid, trap and kill. The experiment proved that this is a non-toxic and harmless plant protection method, which will produce huge economic and social benefits for protecting the environment, producing pollution-free vegetables and greatly reducing the production cost of crops

key words: vegetables; pest; In may1993, the Plant Protection Institute of Chinese Academy of Agricultural Sciences discovered Liriomyza sativae in Kunming, Yunnan Province. In July1994, the Chinese Academy of Sciences discovered that Liriomyza sativae was seriously harmful to vegetables, flowers and other crops in Hainan and Guangdong provinces. With the introduction or import of vegetables, flowers and fruits from abroad in recent years, these pests have been introduced into China, and with the rapid transportation of vegetables, flowers and fruits, the pest situation has also spread from the south to the north, from the east to the west, and even the plastic greenhouse in the North has the harm of Liriomyza maculata. This pest has brought huge economic losses to agricultural production and farmers' poverty alleviation. The second criterion is that it has a direct impact on the people's vegetable basket project. Changhe and the state attach great importance to the occurrence of the epidemic and require all parts of the country to "take decisive measures to control the spread and put it out as soon as possible"

pest control in plant protection measures can be divided into several aspects, such as plant quarantine laws and regulations, agricultural control, chemical control, physical control and biological control. We use the reflected light produced by the colored plastic film to attract and kill pests, or to avoid pests. The applied research on plant protection is a physical control measure

550nm ~ 600nm bright yellow is attractive to whitefly, melon fruit fly, Thysanoptera and even housefly in plastic greenhouse. 480nm ~ 540nm orange light has strong attraction to Liriomyza sativae and Liriomyza sativae. Silver plastic film as mulch has good repelling effect on winged aphids, honeysuckle beetles, flower miner and yellow striped beetles

use a test tube to install the miner's kidney to be eclosion. After the adult eclosion, place one end of the test tube in the dark box, and the other end faces the natural light. The adult moves towards the direction of light. When yellow light is reflected in the direction of light, the movement speed of adults is significantly accelerated, which provides an experimental basis for us to choose the coloring property of plastic thin. Color is a feature of light. Different objects have the function of absorbing and reflecting light of different wavelengths. If a piece of plastic film reflects yellow light and absorbs all other light waves, the plastic film is yellow. Most of the reflected light is solid color, which is opaque

the applications of PVC yellow film and LDPE silver film developed by us in vegetables, flowers and other economic crops are introduced respectively

Development and application of PVC yellow self-adhesive film. The "Golden Dragon" adhesive paper produced in Japan is a kind of fly catching paper tape. Also use thick paper coated with adhesive to stick to mice and cockroaches. However, the yellow paper products stick to the field and can only be used once after being affected by damp or water. The cost is too high for vegetable farmers to bear

pvc yellow self-adhesive thin film is a PVC calendering film that adjusts the Yellow thinking according to the stimulation value of Liriomyza sativae and Liriomyza sativae to yellow light. The self-adhesive is transparent, non-toxic and tasteless. After the adhesion of pests reaches a certain density, the pests can be washed with water. After the water is naturally dry, the acrylic acid will not dry. It can be reused

1.1.1 (4) regularly check the screw yellow self-adhesive film at the jaw, the main raw and auxiliary materials

pvc (average polymerization degree 800), Henan Jiaozuo No.2 Chemical Plant

dop (industrial products), commercial industrial products

450 ester (industrial products), Henan Wuzhi plastic chemical plant

chlorinated paraffin (industrial products), Henan Wuzhi plastic chemical plant

paste composite stabilizer (industrial products), Shijiazhuang No. 9 chemical plant

composite lead salt stabilizer (industrial products), Sichuan Feiyan chemical plant

Zhongming yellow, Dalian paint plant

fluorescent yellow, Zhejiang Huangyan chemical plant

lisol Baohong, Shanghai dyeing and chemical plant

stearic acid (industrial products), electronic universal testing machine, industrial products on sale

paraffin (Industrial products), industrial products on sale

light calcium carbonate (industrial products), industrial products on sale

titanium dioxide (industrial products and, Commercial industrial products

1.1.2 yellow self-adhesive film production process formula

pvc100 parts

dop16 parts

dedb16 parts

450 ester 10 parts

chlorinated paraffin 8 parts

paste composite stabilizer 2 parts

composite lead salt stabilizer 1.5 parts

stearic acid 1 part

paraffin 1.4 parts

light weight calcium carbonate 28 phr

titanium dioxide 1 phr

medium bright yellow per 100kg pvc68 g

fluorescent yellow per 100kg pvc14 g

lisolbo red Every 100kg of pvc8g

the metered materials are mixed in a high-speed kneader, and the temperature is controlled at 95 ± 5 ℃ for about 10 minutes. The powder is kneaded after automatic screening, and then sent to the four roll calender after continuous plastic refining by two open mills. The roll is 1.1m wide yellow calendered PVC film, with a thickness of 0.45 ± 0.04mm, for standby

1.1.3 preparation of self-adhesive

the self-adhesive coated on the yellow film shall be harmless to people and animals, transparent and free of odor. Washing the adhesive surface with water can remove the impurities of stuck pests, while washing with water still has adhesion after evaporation. Repeated washing can reach 20 times. We use solution co polyacrylate resin and terpene resin, hydrogenated rosin as tackifier to prepare solvent-based adhesive, dilute the adhesive to a certain viscosity with benzene free solvent, and then carry out transfer coating. The coating amount is about 42g/m2

cut the Yellow self-adhesive film after gluing into small pieces with width of 19cm and length of 26cm, and then pack them. When in use, only two pieces need to be opened slowly to hang in the field

1.2 application of yellow self-adhesive film × 26=494cm2, apply special adhesive on one side, as shown in Figure 1, with a net adhesive area of about 450cm2 and a coating amount of 68g/m2. 6 holes with a diameter of 4mm ~ 5mm are uniformly distributed

the application of yellow self-adhesive film to prevent and control insects can reduce the amount and times of pesticide application on fruits and vegetables, protect the ecological environment and reduce the control cost. The specific applications are as follows:

1.2.1 trapping, killing and epidemic monitoring of two kinds of leaf miner

an average of 15 ~ 20 yellow films are hung per mu. Hanging 15cm ~ 25cm higher than the crop, each day and night can trap and kill 200 ~ 2000 adults, with a maximum of 8100. The main pest generation can continue to use after washing the insects with water for three to five days, and the non main pest generation can continue to use after washing the insects once every 10 days. The larvae and adults can also be trapped and killed by placing yellow film on the ground between plants. This yellow film adhesive can be used for about one year due to its non fading, moisture-proof and moisture-proof properties. It can be kept properly and can be used again in the next year

1.2.2 trapping and killing effect in plastic greenhouse

Liriomyza sativae and Liriomyza sativae have the characteristics of long-distance propagation with vegetables, flowers, fruits, packaging materials and means of transport, and strong fecundity. In only a few years, pests have spread all over the country. In the north, except the vegetables, flowers, tobacco leaves, melons and fruits in the open field in summer, plant epidemics and viruses transmitted by some pests occurred in different degrees in the plastic greenhouses in winter and spring. The control effect of traditional pesticides is very poor, and the control effect of imported expensive pesticides such as "jijimie emulsifiable concentrate", "abadine emulsifiable concentrate" and "aifuding emulsifiable concentrate" is only about 60%

hanging a yellow self-adhesive film in a 15m2 greenhouse, and placing the self-adhesive film between the rows of plants is very beneficial to trapping pests. In addition to the obvious stick killing effect on Liriomyza sativae and Liriomyza sativae, it also has a good effect of trapping and sticking to melon fruit flies, Liriomyza sativae, greenhouse whiteflies and Thysanoptera insects that transmit yellowing virus vectors in greenhouse cucumbers

the Yellow self-adhesive film has a good trapping and killing effect on the winged aphid, flower Liriomyza, peach fruit borer, etc. in some fruit tree areas and larch forest areas, in addition to the good trapping and adhesion to the Liriomyza diversicolor of vegetables and flowers. It also has a certain trapping and adhesion effect on the housefly and green headed fly

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