339 results about "Parasitism" patented technology

The present invention provides an aphidius gifuensis scale breeding technique, and belongs to the branch of technology of biological control of agricultural destructive insects for solving problems that the prior breeding technique of aphidius gifuensis is inefficiency and adj. industrialization is not liable to realize.The invention provides a aphidius gifuensis scale breeding technique and the embodiment scheme of the present invention comprises the following steps:(a) tobacco plant replanting: when growing to a resettling growth stage, the tobacco plants are replanted to a honeybee breeding booth;(b) myzus inoculation to tobacco plant: myzus is inoculated to the tobacco plant when the tobacco plant grows out 9-12 real leaves, and each tobacco plant is inoculated with 20-30 myzuses;(c) honeybee inoculation in parasitism: when myzuses are 2000-3000 per tobacco plant, artificial inoculation is performed, after 10-14 days, deadlocked myzuses are formed, and then after a week, the deadlocked myzuses will become aphidius gifuensis.By using the scale breeding technique of the present invention, each plant can obtain more than 8000 eadlocked myzuses, thus, the breeding cycle is shortened, and large-scale production can be performed.

The invention belongs to the technical field of analog-to-digital converters and particularly relates to a successive approximation type analog-to-digital converter of a self-calibration bridge-connection capacitor structure. The successive approximation type analog-to-digital converter of the self-calibration bridge-connection capacitor structure comprises a sample hold circuit, a comparer, a logic control circuit, a digital-to-analog converter and a calibrating circuit, wherein the capacitor-type digital-to-analog converter is of a redundant capacitor bridge-connection structure, and a redundant capacitor and an auxiliary capacitor are added in the bridge-connection structure; meanwhile, a calibrating algorithm is built in a calibration control unit and a calibration processing unit, and nonlinear characteristics caused by mismatch and parasitism of a manufacturing process in the bridge-connection capacitor structure are measured through the redundant capacitor bridge-connection structure in the calibration detection stage; in the normal analog-to-digital converting process, the calibration processing unit performs postprocessing on digital output of the analog-to-digital converter according to detected nonlinear information and outputs a calibrated digital signal.

The present invention provides a compound for controlling wood parasitism pest as well as a method for preventing wood parasitism pest. That is the present invention provides a compound containing O-ethyl-S-propyl[(2E)-2-(cyano-imino)-3-ethyl-1-imidazolealkyl]thionophosphonates as active component, a method for controlling the wood parasitism pest using said compound, as well as a method for protecting wood using said compound.

The present invention discloses method of inoculating Guanhua desert cistanche to tamarisk stem. The method includes mainly inducing tamarisk stem to root, inoculating Guanhua desert cistanche to tamarisk root, and maintaining the dark condition after inoculating to form the parasitism between the seed of Guanhua desert cistanche and the root of tamarisk. The present invention has can reach the aim of fast and effectively inoculation of Guanhua desert cistanche, and makes it possible to cultivate desert cistanche in saline alkali soil and tidal land.

The invention relates to a method for breeding and feeding Aphidius gifuensis Ashmesd in a floating seedling raising shed and belongs to the field of insect feeding. According to the biological and ecological behaviors of the Aphidius gifuensis Ashmesd and the modern agricultural science and technology, by using the existing floating seedling raising shed and the time difference between Myzus periscae (Sulzer) breeding period and the Aphidius gifuensis Ashmesd larva growth and development period, breeding Aphidius gifuensis Ashmesd required for Aphidius gifuensis Ashmesd breeding is obtained at the same time when the Myzus periscae (Sulzer) is bred. The method for breeding and feeding the Aphidius gifuensis Ashmesd in the floating seedling raising shed has the advantages that the operation is simple to conduct, the cost is low, the repetitive investment is not required, the survival rate is high, the scale breeding is facilitated and the popularization is facilitated. Compared with the method for breeding and feeding the Aphidius gifuensis Ashmesd in a seedling raising greenhouse, on the premise that the bred and fed quantity is not affected, the cost per mu is reduced by RMB4.5, the quantity of bred and fed adult Aphidius gifuensis Ashmesd and the parasitism rate are respectively improved by 21.3 percent and 3.8 percent, the number of parasitic aphids on each plant in the field and the control rate of the Aphidius gifuensis Ashmesd to the aphids are improved by 4.75 percent, the economic benefit, the social benefit and the ecological benefit are good, and a good foundation is laid for the large-scale breeding and feeding of the Aphidius gifuensis Ashmesd.

The invention discloses a diaphorina citri Kuwayama parasitism natural energy scale breeding method. Insects and germs on a Murraya exotica plant are eliminated to obtain a clean Murraya exotica without disease and pest infection. The clean Murraya exotica without the disease and pest infection is transferred to a first greenhouse or a first insect rearing cage, and the diaphorina citri Kuwayama is grafted to breed. Under normal lighting conditions, the Diaphorina citri Kuwayama is cultured and bred under the temperature of 22 to 28 DEG C, and the Murraya exotica or the Diaphorina citri Kuwayama is supplemented at any moment according to requirements. The clean Murryaya exotica without the disease and pest infection is transferred to a second greenhouse or a second insect rearing cage, and the Diaphorina citri Kuwayama in the first greenhouse or the first insect rearing cage is grated. Under the normal lighting conditions, the Diaphorina citri Kuwayama is cultured to spawn and grow to a nymph of 4-5 years old under the temperature of 22 to 28 DEG C. The parasitic wasp and parasitic Diaphorina citri Kuwayama are utilized for inoculation, and the parasitic wasp can be colleted after 7 to 10 days. According to the Diaphorina citri Kuwayama parasitism natural energy scale breeding method, the industrialization production of the Diaphorina citri Kuwayama parasitic wasp is achieved.

The invention belongs to the technical field of biological pesticide, in particular to screening and identification of a coniothyrium minitans strain with strong parasitism and saprogenicity on sclerotinia sclerotium and an application thereof in a microorganism agent. The coniothyrium minitans ZS-1SB strain is preserved in China Center for Type Culture Collection (CCTCC) with the preservation number being CCTCC NO: M209114. The invention also discloses an open-type solid fermentation cultivation method of the microorganism agent and an application of the coniothyrium minitans ZS-1SB microbial inoculum in the prevention and treatment of sclerotinia of colza. The microorganism agent of the invention has excellent biological prevention effect on plant fungous diseases such as sclerotinia rot of colza and the like.

The invention discloses a complementary metal-oxide-semiconductor transistor (CMOS) broadband low-noise amplifier adopting noise cancellation technology. The CMOS broadband low-noise amplifier structurally comprises a signal input stage and a noise cancellation stage, wherein the signal input stage is composed of an inductance Li, a resistance RF, an N-channel metal oxide semiconductor (NMOS) tube M1-a and a P-channel metal oxide semiconductor (PMOS) tube M1-b, and the PMOS tube M1-b and the NMOS tube M1-a form an automatic biasing phase inverter, negative feedback of the resistance RF is utilized by the signal input stage to achieve matching of input impedance, and the inductance Li provides resonance at the input end. The resonance is used for canceling capacitive parasitism of the input end, and the noise cancellation stage is composed of a resistance R1, a capacitance C1 and two NMOS transistors M2 and M3. The noise cancellation stage is used for mutually canceling with noise voltage of the signal input stage. The amplifier has the advantages in factors of input matching, noise, transmission gaining, bandwidth and linearity, and is simple in structure, small in chip area, convenient to integrate, low in cost and high in cost performance.

The invention provides a seed-harvesting method for growing a host tamarisk ecological forest parasitism cistanche tubulosa in the harsh desert and sand desert comprising the following steps: establishing a drip irrigation and spray system through growing the host tamarisk ecological forest in a programming narrow-row and close planting mode, respectively drilling holes between the rows of grown host tamarisk, sowing the inoculated cistanche tubulosa seeds in a monolayer or stratified mode, achieving the effect of sustainably harvesting mature, plumpness and high yield of cistanche tubulosa seeds for many years by means of the system technology integration of spraying ''foliar fertilizer'' and combining biological comprehensive control. After test, the survival rate of the plant that the cistanche tubulosa is parasitized and inoculated on the host tamarisk can reach 90.5-96.5%, the yield of harvesting cistanche tubulosa per mu is 2-4 kilogram and the germination rate of the harvesting cistanche tubulosa seeds is up to 95.5-98.9%.

The invention discloses a seeker model identification system based on a parasitism loop. The system comprises a simulation signal generation module, simulation equipment and a model identification module. A simulation frequency sweeping input signal is transmitted to serve as theoretical missile target sight angular velocity information through the simulation signal generation module and guides the simulation equipment to work. A seeker in the simulation equipment outputs the actual missile target sight angular velocity, a seeker model is obtained through the model identification module according to identification of the theoretical missile target sight angular velocity and the actual missile target sight angular velocity, and in other words, seeker transfer functions based on the seeker isolation parasitism loop are obtained. The seeker model obtained through identification is applied to design of a guiding system, and digital simulation precision of the guiding system is improved. Furthermore, digital simulation of a guiding control loop can be made not to be dependent on a seeker semi-physical simulation system, and all-working-condition multi-trajectory guiding control simulation can be achieved only through the digital simulation form, thus the work amount of semi-physical simulation is reduced, and research on the seeker and the guiding control system is digitalized.

The invention discloses a methylamine avermectin benzoate insecticide for animals and making method and application, which is characterized by the following: dissolving the insoluble methylamine avermectin benzoate in the water to form powder, particle and tablet; fitting for preventing multiple internal and external parasitism; reducing toxicity, high activity and securing the usage; avoiding the usage of toluene, xylene and carbinol; reducing the pollution; accelerating the health cultivation.

The invention provides a production method, which can enable the content of Phenylethanoid Glycoside combination before and after the processing to keep stable through improving the processing treatment technology of a broomrape decoction piece, wherein, the Phenylethanoid Glycoside combination is the active ingredient abundant in broomrape. Through a high-frequency microwave electrical field, the invention leads a polar molecule in a succulent stem cell of a waterrich fresh broomrape to perform high-frequency swing, vibration, and intermolecular friction and extrusion to cause the inner and surface temperature of a broomrape cell to rise rapidly; the pyrometric effect for inactivating the enzyme activity, so as to effectively block and restrain the degradation loss of the Phenylethanoid Glycoside combination caused by the enzymatic reaction induced by enzyme systems such as hydrolytic ferment, glucoside hydrolase, etc., abundant in a fresh broomrape cell; at the same time, the broomrape decoction piece is dried through the technology for microwave drying or other drying methods. The analysis determination shows that the content of echinacoside and a verbascoside monomer compound which are the main index components for weighing the quality of the broomrape decoction piece in the acquired broomrape decoction piece can reach 13 percent to 24 percent (by dry matters), and the water content is 1.3 percent to 4.1 percent.

The invention discloses a nutrient substance for prolonging the service life of adult bees of aphidius gifuensis ashmead. The nutrient substance is composed of 25% of white sugar, 5% of cane sugar, 5% of glucose, a small number of mineral substances, vitamins, amino acid and copper gluconate and the balance water. The nutrient substance can be supplied to aphidius gifuensis ashmead in the field with aphidius gifuensis ashmead, can provide sufficient nutriment for the growth and development of adult bees of aphidius gifuensis ashmead, prolongs the service life of adult bees of aphidius gifuensis ashmead, improve the activity and oviposition capacity, is low in cost, and guarantees the large-scale propagation and application of aphidius gifuensis ashmead. The aphidius gifuensis ashmead is fed artificially and released in the field, the service life of myzus persicae is shortened and the fecundity of myzus persicae is decreased by more than 90% through oviposiiton and parasitism of female bees on myzus persicae, and the myzus persicae control function is remarkable. The service life of adult bees of aphidius gifuensis ashmead is prolonged, the survival rate of adult bees of aphidius gifuensis ashmead is improved, and large-scale application of aphidius gifuensis ashmead is facilitated.

The invention discloses a method for improving diaeretiella rapae breeding efficiency. According to the method for improving the diaeretiella rapae breeding efficiency, lipaphis erysimi is bred in a temperature changing mode, and the method has the advantages that individuals of a lipaphis erysimi three instar nymph and an adult are larger than a three instar nymph and an adult in the prior art; the survival rate of the lipaphis erysimi is increased, and the time for the lipaphis erysimi to grow from an egg to the adult is shortened; 3, the service life of a bred lipaphis erysimi female adult is longer than that of a lipaphis erysimi female adult bred through a conventional method, the lipaphis erysimi adult obtained through temperature-changing breeding breeds the next generation of the lipaphis erysimi, and the egg laying amount of the female adult is higher than that of the lipaphis erysimi female adult bred through the conventional method; 4, the parasitism rate of the diaeretiella rapae to the lipaphis erysimi is increased. According to the method for improving the diaeretiella rapae breeding efficiency, the breeding time of a diaeretiella rapae host is shortened, and the breeding efficiency of the diaeretiella repae is improved.

The invention relates to a plaster for expelling wind by vipers, which is a drug for treating various osteoarthropathies caused by rheumatism and overcomes the defects of other methods. The plaster is prepared by the following traditional Chinese medicine materials with weight proportion according to certain technique: fructus chaenomelis, clematis chinensis, cortex periplocae, common clubmoss herb, safflower, centipede, parasitism, cassia twig, obscured homalomena rhizome, paniculate swallowwort root, mulberry twig, sappan wood, kadsura pepper stem, notopterygium root, akebia stem, hiraute shiny bugleweed herb, peach seed, long-noded pit viper, whole worm, garter snake, jiapian, panax pseudoginseng, dragon's blood, tortoise plastron, nux vomica, Chinese angelica, ground beetle, earthworm, garden balsam stem, common monkshood mother root, kusnezoff monkshood root, eucommia bark, rhizoma cibotii, rhizoma corydalis, sesame oil and yellow lead.

The invention relates to the field of agricultural pest biological control and aims at providing a pupal parasitized wasp artificial breeding production method capable of enhancing drosophila biological control effects. The method comprises collecting drosophila melanogaster pupas with parasitized trichopria drosophilae perkins, performing eclosion for continuous three generations for parasitizing drosophila hydei pupas, and collecting wasp species; inoculating and breeding drosophila hydei, parasitizing and breeding the drosophila hydei pupas with queen parasite wasps, and collecting hatched parasite wasps for storage and reservation. The pupal parasitized wasp artificial breeding production method capable of enhancing the drosophila biological control effects controls the parasite time of the trichopria drosophilae perkins during production and inoculation processes, avoids low parasitic rate caused by over-short parasite time or low yield rate caused by excessive parasitism, facilitates reasonable inoculation and utilization of the parasite wasps through cultivation of the trichopria drosophilae perkins, is applicable to large-scale continuous production, optimizes dominant host selection and wasp breeding technology, achieves high-quality, efficient and large-scale propagation of the trichopria drosophilae perkins and lays a good foundation for propagation and utilization of the trichopria drosophilae perkins.

The invention discloses an artificial multiplication method for tetrastichus septentrionalis. The method includes the following steps of (1) selection of a substitute host; (2), field collection and selection of micromelalopha troglodyta pupa; (3), cultivation of bee species; (4) extraction of information matter; (5), processing of antheraea pernyi pupa; (6), bee receiving; (7), cultivation and development. According to the artificial multiplication method, pupa which is not subjected to parasitism is soaked with ethyl alcohol, pupa surface extract is obtained, then the pupa surface extract is sprayed on the antheraea pernyi pupa in an artificial spraying mode, the tetrastichus septentrionalis is induced to be subjected to parasitism, and the parasitism rate is raised. The tetrastichus septentrionalis is subjected to indoor large-scale multiplication, and a practical technical means is provided for preventing and controlling hyphantria cunea, micromelalopha troglodyta and other lepidoptera pests for forest creatures.

The invention relates to the field of insect feeding, in particular to an artificial propagation technology of scleroderma guani, and provides application of thyestillageblerifacldermann larva as a host to artificial propagation of scleroderma guani. The artificial breeding technology of the thyestillageblerifacldermann has become more mature, and the breeding capacity is large, so that large-scale breeding can be realized. The thyestillageblerifacldermann is used as an alternative host for the scleroderma guani, so that the parasitism is strong and the survival rate of the scleroderma guani is high.

The invention relates to the technical field of agriculture pest biological prevention and control devices, in particular to an automatic and continuous aphidiidae releasing device. The automatic and continuous aphidiidae releasing device comprises a supporting frame, a releasing hole formed in the supporting frame, a fixing ring, a 60-mesh gauze element and a 40-mesh gauze element, wherein the fixing ring is arranged in the release hole in a sleeved mode, the 60-mesh gauze element is fixed to the supporting frame, and the 40-mesh gauze element is arranged on the top face of the release hole. The 60-mesh gauze element is fixedly connected with the supporting frame through thin ropes. The 40-mesh gauze element is fixedly connected with the release hole through the fixing ring. By use of the automatic and continuous aphidiidae releasing device, eclosion of aphidiidae from stiff aphids is continuously carried out, the aphidiidae automatically enter a smoke yield to search for myzus persicae for parasitism, the parasitism rate can be improved to be 90-100%, manpower and material resources can be greatly saved, the prevention and control functions can be automatically and continuously achieved, and the aim of prevention and control over myzus persicae and aphid transmission viral diseases is achieved with a small quantity of pesticides or without pesticides.

The invention provides an application of a T11-W bacterial strain in agriculture, and particularly relates to the application of the T11-W bacterial strain in the prevention and cure of soil-borne nematodiasis, especially root-knot nematode diseases of vegetables. The T11-W bacterial strain can be used for effectively preventing and controlling the root-knot nematode diseases of tomatoes. Whether the T11-W bacterial strain is subjected to soil-mixed treatment or root-irrigation treatment, when the effective spore amount each pot is 2*10<7>, the prevention and control effect of the T11-W bacterial strain is above 77%. For the root-irrigation treatment, when the effective spore amount each pot is 2*10<8>, the prevention and control effect of the T11-W bacterial strain reaches up to 90.37%.

The invention discloses a radio frequency switch circuit for improving switch-off capacitance. The circuit comprises a gate voltage control module, a switch module and a bulk voltage control module. The switch module comprises a plurality of cascaded switch units. Low capacitance-to-ground paths are imported among the switch units. According to the radio frequency switch circuit, in a circuit design mode of carrying out low capacitance parallel-to-ground on circuit layers or importing to-ground controllable parasitism low capacitance into latter segment design, the switch-off capacitance Coffcan be optimized and reduced, and the switch-on resistance Ron is basically kept unchanged.

The invention discloses a compound microbial agent of nematode egg parasitical fungi and a spore germination accelerating agent, and a preparation method and application of the compound microbial agent. The compound microbial agent of the nematode egg parasitical fungi and the spore germination accelerating agent comprises paecilomyces lilacinus spore powder or fermentation broth and the spore germination accelerating agent. The best combination with various nutrient substances, which can be used for promoting the germination of paecilomyces lilacinus spores, is obtained through orthogonal experiments, and the bio-control effect of the compound microbial agent for promoting the germination of the paecilomyces lilacinus spores and controlling root-knot nematodes is verified through indoor bioassay experiments. After the compound microbial agent acts on the root-knot nematodes for five days, the egg parasitism rate of the root-knot nematodes can reach more than 80 percent, and the egg hatchability of the root-knot nematodes is almost zero, which are obviously superior to those of a control group. Experimental results prove that the spore germination accelerating agent added in the compound microbial agent can be used for effectively promoting spore germination, so that the parasitism rate of paecilomyces lilacinus to root-knot nematode eggs is improved, the acting time is shorted, and finally the control effect on the root-knot nematodes of plants is significantly improved.

The invention belongs to the technical field of waste water sewage treatment, and discloses a purification, oxygenation, air floatation and aeration device. The purification, oxygenation, air floatation and aeration device consists of a semispherical protective cover (1), a conical floating body (9), a high-end high-pressure fan (3) and a submersible motor (11), wherein an oxygen-gathering rare earth permanent magnet (4) and an LC oscillator (26) are arranged in a vertical drum (2), and air inlets (5) are formed; a boosting stirring blade (16) and a fly-cutter-shaped flow push blade (15) are arranged at the tail end of an ultra-short hollow shaft (14); a sealed cabin (12) filled with nano graphite powder and an air supply cabin (13) are arranged coaxially with the ultra-short hollow shaft (14); the high-end high-pressure fan (3) is used for conveying oxygen-gathering high-pressure air into the underwater air supply cabin (13) through a non-eddying-flow storage air supply cabin (7) and a resistance-free air guide pipe (8). By adopting the purification, oxygenation, air floatation and aeration device, the oxygen-gathering capability, oxygen dissolving capability and rich oxygen transfer rate are increased, the water purification efficiency is increased, a water purification effect is enhanced, the influence of wind waves can be reduced, parasitism of scallops and snails is prevented, and heat-dissipating, lubricating, dust prevention and rainwater prevention effects are achieved. The device can run safely and stably.

The invention relates to water conservancy bank protection buildings, in particular to a layered water landscape bank protection system. The layered water landscape bank protection system can integrate watercourse protection, river aquatic animal parasitism and plant landscape. The system is formed by staggered arrangement of a kind of concrete blocks layer by layer, namely blocks are arranged in parallel on the bottom layer of a watercourse along a river bank firstly, then blocks are piled on the bottom blocks in a staggered mode, adjacent layers of blocks are fixed with connecting rods, the rest is done in the same way till the blocks are piled on the top of the bank, and then the layered water landscape bank protection system is formed. A cylindrical gallery on the blocks can be filled with pebbles under the water surface to serve as a gallery for living of small aquatic animals, planting soil can be arranged above the water surface for green planting, and a fan-shaped gap between every two adjacent blocks can serve as a planting groove which is filled with planting soil for planting of aquatic plants. The layered water landscape bank protection system can protect and green the river bank, enables tourists to be close to the water surface, and plays an important role in creating watercourse landscape.

The invention discloses a cultivation method for promoting santalum album to grow into useful timber early and high yield. The cultivation method comprises the steps as follows: A, selecting healthy santalum album seedlings propagated by seeds of healthy and mature seed trees and cultivated with parasitism of kuhnia rosmarnifolia vent; B, selecting an area where bananas can be planted as a planting area; C, loosening soil and digging holes in the selected area according to the pH of land; D, applying mixed farmyard manure in dug pits to serve as a base fertilizer; E, planting the healthy santalum album seedlings in the dug pits; F, appropriately watering dilute manure water or a nitrate nitrogen compound fertilizer dilute solution with the concentration of about 1:300 after planting for 15-20 days; and the like. According to the cultivation method, existing seedling cultivation is inherited as the basis, according to the nature of the survival of the santalum album, artificial and natural conditions are fully used and combined, the planting method of guide, control and gradual removal of parasitism is further adopted, and the survival mode that the santalum album depends on parasitism is changed thoroughly, so that the santalum album grows into the useful timber early and is high in density; and the operation is simple and convenient, and the method can be promoted for large-scale industrialization.

The invention discloses an artificial breeding method of a Taiwan abdominal cocoon bee. The artificial breeding method of the Taiwan abdominal cocoon bee comprises the following steps: A1, establishing a bee multiplying chamber; A2, acquiring a bee seeding; A3, bee receiving method; A4, rejuvenating bee species; A5, rejuvenating a host. By indoor breeding prodenia litura as expanding propagating host of the Taiwan abdominal cocoon bee, artificial regulating and controlling temperature and humidity and the like, bee adult periods of the prodenia litura and the Taiwan abdominal cocoon bee are identical. A prodenia litura egg mass is utilized to parasitize for the Taiwan abdominal cocoon adult bee to breed the Taiwan abdominal cocoon bee, wherein rejuvenating technology of the bee seeding and host species, breed conservation technology and the like. The artificial breeding method of the Taiwan abdominal cocoon bee aims to artificially breed abundant parasite natural enemy, namely, the Taiwan abdominal cocoon bee and then conducts field release in target pest spawning period and has the advantages of improving field parasitism rate of the target pest, controlling the population quantity of the target pest, reducing crop damage degree, reducing chemical pesticide usage amount, improving yield and quality of agricultural output, and protecting life safety of people and ecological environment safety.

The invention discloses a method for quickly breeding aphidius gifuensis. The method includes steps of host plant cultivation, insect species breeding, bee species breeding and aphidius gifuensis breeding, a wild ansu apricot tree or peach tree seedling is selected as a host plant, and a puerile treetop produced from the seedling after water-fertilizer culture is subjected bee breeding for about 35-45 days, which is a reduction of 30 days when compared with using tobacco for seedling breeding. The host plant can be grafted with aphid after leaf buds germinate and leaves unfold on March of early spring, so that time for first-time breeding of aphidius gifuensis in tobacco-growing areas of Northeast China is shortened, and the problems of frost influence, high breeding energy consumption, low activity of aphidius gifuensis, staggering of bee breeding peak and aphid appearing peak and irregular mummified aphidius gifuensis forming are solved. By the method, bee breeding cost is lowered, and using range of aphidius gifuensis is widened; the host plant of five years old can breed more than 50 thousand myzus persicae, braconid parasitism rate is up to 80%, mummified aphid forming rate of the host plant is up to higher than 75%, and each host plant can breed mummified aphidius gifuensis and can prevent and control different crops by more than 60 mu.

The invention discloses an eight-frequency-band plane printing mobile phone antenna which comprises a dielectric slab, a main floor, a parasitism ground branch, an exciting unit and a signal feed-in line. The main floor and the parasitism ground branch are printed on one face of the dielectric slab, and the exciting unit and the signal feed-in line are printed on the other face of the dielectric slab. The main floor is directly connected with the parasitism ground branch, and an L-shaped gap is formed between the main floor and the parasitism ground branch. An L-shaped open slot is formed in the tail end of the parasitism ground branch. The exciting unit comprises a first branch, a second branch and a third branch, and the first branch, the second branch and the third branch are all directly connected with the signal feed-in line. The mobile phone antenna is of a plane structure, the plane printing technology can be adopted, multiple resonance points are utilized for broadening bandwidths, all the resonance points can be conveniently adjusted, two wide bandwidths are formed at the low low-frequency band and the high-frequency band, and therefore all mobile phone frequency bands of the current 4G communication are covered. Compared with the prior art, the eight-frequency-band plane printing mobile phone antenna has the advantages of being of the two-dimensional structure, having multi-frequency-band wide bands and being easy to adjust, and is applicable to various small-size mobile terminals represented by mobile phones.