86results about How to "Increase parasitic rate" patented technology

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 discloses a light environment control method for breeding trichogramma dendrolimi with oak silkworm eggs; the oak silkworm eggs on which the trichogramma dendrolimi are parasitical are adopted as parental eggs, and the fresh oak silkworm eggs on which nothing is parasitical are adopted as progeny eggs; the oak silkworm eggs are controlled to be under a purple light illumination condition; after a parasitic link is over, the parental eggs and the trichogramma dendrolimi are removed; the progeny eggs are placed under a red light illumination condition; after the growth and the eclosion of the trichogramma dendrolimi in the progeny eggs, the trichogramma dendrolimi can continue to serve as bees to repeat the process, so that the population is reproduced generation by generation, and finally a required number of trichogramma groups are finally obtained; and a biological-control finished product is processed. Due to the adoption of the light environment control method for breeding trichogramma dendrolimi with oak silkworm eggs, the parasitic rate of the trichogramma dendrolimi can be improved by 2.25 percent to 11.25 percent, the eclosion rate can be improved by 2.99 percent to 11.04 percent, and the number of identical bees and the legacy bee rate have no significant difference. In multi-generation breeding, the number values are further increased because the population is reproduced generation by generation.

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 discloses a plutella xylostella cotesia rubecula artificial propagation production method which comprises the following steps: collecting and propagating plutella xylostella cotesia rubecula species, producing hosts, conducting inoculation, propagation, development and feeding on plutella xylostella, conducting inoculation and cultivation on plutella xylostella cotesia rubecula, separating the plutella xylostella cotesia rubecula from the plutella xylostella, and conducting collecting, reserving and seed stock on plutella xylostella cotesia rubecula pupae. By means of the scheme of the plutella xylostella cotesia rubecula artificial propagation production method, advantaged plutella xylostella cotesia rubecula specie selection, propagation and pasturing technology is completed, high-quality, efficient and mass plutella xylostella cotesia rubecula propagation is achieved, mass production can be carried out, the plutella xylostella cotesia rubecula artificial propagation production method is applied to the technical field of biological control over agricultural pests, the plutella xylostella cotesia rubecula artificial propagation production method is used for preventing and treating primary pests such as the plutella xylostella on brassicaceous vegetables and meets production requirements of organic vegetables and green vegetables.

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 provides a method for breeding trichogramma pintoi indoors and corcyra cephalonica raising fodder. The corcyra cephalonica raising fodder comprises fodder A and fodder B, wherein the fodder A is composed of, by weight, 50 parts of rough wheat bran, 40 parts of corn flour, 10 parts of flour and 5 parts of water; the fodder B is composed of, by weight, 50 parts of rough wheat bran, 40 parts of corn flour, 5 parts of flour, 3 parts of fish meal, 2 parts of yeast powder and 5 parts of water. The method uses corcyra cephalonica eggs as intermediate hosts, formula fodder of corcyra cephalonica larvae at different periods is prepared by adopting a plurality of kinds of fodder, the corcyra cephalonica larvae are bred by the formula fodder so that emergence tidiness of adults can be achieved, the egg laying amount is high, and the mode that a boiling tube is connected in egg exposure is adopted for large-amount inoculation and breeding of the trichogramma pintoi. The method does not need a large device, breeding materials are simple and easy to obtain, operation is simple, practicality is high, environment is protected, pollution is avoided, the produced trichogramma pintoi can be used for biological control of a plurality of kinds of agriculture and forestry pests, and good economical, ecological and social benefits are obtained.

The invention relates to a breeding method of pyemotes tritici, which comprises the following steps of: placing original hosts parasitized by the pyemotes tritici into a dactylethrae, and placing alternative hosts into a culture dish, placing the dactylethrae into the culture dish, inoculating for 24-48h and then transferring the parasitized alternative hosts into the dactylethrae to culture to serve as protospecies of the pyemotes tritici; placing the protospecies of the pyemotes tritici and the alternative hosts into the culture dish according to the method, inoculating for 48-72h and then transferring the parasitized alternative hosts into the dactylethrae to culture to breed the pyemotes tritici. The method provided by the invention is concise in operation, a used device is simple and available, and the inoculation method combining the dactylethrae with the culture dish greatly reduces the damage on the physogastry body of the pyemotes tritici caused by the activity of the alternative hosts and increases the parasitism rate of the pyemotes tritici.

The invention discloses a method for preventing and treating facility vegetable bemisia tabaci through eretmocerus sp. A plastic flower pot, culturing substrates, tobacco seedlings and a fly net are selected to form an integrated device, and the purposes of expanding the propagation of the eretmocerus sp and preventing and treating the facility vegetable bemisia tabaci are realized. The method disclosed by the invention is favorable for establishing eretmocerus sp population which is suitable for production and of which the population quantity is large enough through expanding propagation of the small-group eretmocerus sp, after the release of the eretmocerus sp population, the adaptation capacity of the eretmocerus sp to field environment is high, the parasitic rate of the eretmocerus sp to the bemisia tabaci is high, the insect population density of the bemisia tabaci can be effectively reduced, and the preventing effect can reach more than 80%.

The invention relates to an artificial propagation method for parasitic wasps of bactrocera tau larvae. The method comprises the steps of collection of bactrocera tau and adult parasitic wasps of bactrocera tau larvae, feeding and domestication of the parasitic wasps of the bactrocera tau larvae, feeding of the adult bactrocera tau, expanding propagation and spawning domestication of bactrocera tau, egg collection of the bactrocera tau, expanding propagation of the bactrocera tau larvae, parasitism of the parasitic wasps of the bactrocera tau larvae on the bactrocera tau larvae, larva feedingand pupation after parasitism, parasitic pupae collection and parasitic wasp eclosion separation, and rejuvenation of the bactrocera tau and larva parasitic wasps. By adopting the method disclosed bythe invention, the growth and development of the bactrocera tau and the parasitic wasps are not influenced by residual pesticides, and the host searching capability of the parasitic wasps in the fieldis kept stable; after being collected, the bactrocera tau pupae where the parasitic wasps are parasitic do not need freezing treatment, damage to the bactrocera tau pupae where the parasitic wasps are parasitic is little, the separation effect of the bactrocera tau and the parasitic wasps is good, and the method has the advantages of being easy to operate, capable of saving time, little in humaninterference, high in parasitic rate, easy to breed on a large scale and particularly suitable for application and popularization.

The invention discloses a method for propagating telenomus remus by using fresh-keeping spodoptera frugiperda egg masses. Kraft paper is mainly used as a bearing medium for the spodoptera frugiperda egg masses, the egg masses are stored under the limiting conditions such as airtightness, light shielding and constant low temperature, hatching of the spodoptera frugiperda eggs is inhibited, meanwhile, the method ensures that the telenomus remus can parasitize on the egg masses within a long time, the purpose of intensively propagating a large number of telenomus remus populations is achieved, and the method conveniently releases parasitic wasps in the field at the right time so as to achieve the biological control effect of preventing and controlling the spodoptera frugiperda. The method issimple in operation process, safe and reliable, and provides a large number of parasitic wasp sources are provided for conveniently and rapidly utilizing the spodoptera frugiperda eggs to massively propagate the telenomus remus and applying the biological prevention and control technology for preventing and controlling the spodoptera frugiperda eggs.

The invention discloses a propagation expanding method for parasitic wasps of Spodoptera frugiperda. The propagation expanding method comprises the following steps: S1, cultivating the Spodoptera frugiperda; S2, inoculating the Spodoptera frugiperda for bee inoculation; S3, rejuvenating bee species; S4, releasing bee cocoons; S5, breeding the Spodoptera frugiperda; and S6, rejuvenating the Spodoptera frugiperda. The Spodoptera frugiperda are fed indoors to serve as propagation expanding hosts of Taiwan abdominal cocoon bees, the temperature, the humidity and the like are artificially regulatedto enable adult periods of the Spodoptera frugiperda and the Taiwan abdominal cocoon bees to be consistent, and adult Taiwan abdominal cocoon bees are parasitized by using egg mass of the Spodopterafrugiperda to breed the Taiwan abdominal cocoon bees, wherein a rejuvenation technology, a breed conservation technology and the like of seed bees and host populations exist. The final purpose is to artificially produce a large number of parasitic natural enemies, namely the Taiwan abdominal cocoon bees, then field release is performed in the spawning period of target pests, the field parasitism rate of the target pests is improved, the population number of the target pests is controlled, the degree of harmful crops is alleviated, the use amount of chemical pesticides is reduced, the yield andquality of agricultural products are improved, and the life safety of people and the ecological environment safety are protected.

The invention relates to a method for propagating Japan exorista japonica with wax moth. The method comprises the steps of putting 60 Japan exorista japonica pupas which are pupated in the same day ina raising cage; placing wax moth larvae treated with 75% alcohol and hot water of 60 DEG C with a culture dish, and placing the culture dish in the raising cage; taking out the culture dish each 2h,moving the wax moth larvae on which the exorista japonica lays eggs, to a disposable plastic cup, wherein 50 exorista japonica pupae are placed in each cup; after 15-20d, taking out the exorista japonica from the disposable transparent plastic cup, and integrally placing the exorista japonica in a new disposable transparent plastic cup, wherein 60 exorista japonica pupae are placed in each disposable transparent plastic cup; and after the exorista japonica are subjected to emergence, moving the disposable transparent plastic cup into a new exorista japonica collecting cage, and starting new round of raising and propagating. The host wax moth larvae used by the method are easy to obtain, simple to operate, and low in cost for raising Japan exorista japonica.

The invention provides an artificial propagation method of vally sclerodermite bethylidae, comprising:(1)host cultivation,adopt the pupal of the yellow powder nail initial pupate as the intermediate host, including grub cultivation, old grub cultivation, selecting of the pupal, imago cultivation and gaining ovum; (2)rearing,include cleaning, clogging of the breeding honeybee pipe, move the seed honeybee--vally sclerodermite bethylidae into the breeding honeybee pipe;(3)graft honeybee,take the pupal of the initial pupate into the breeding honeybee pipe and breed the parasitic wasp. The natural host number does not limit the invention, it can breed a good deal of vally sclerodermite bethylidae and substantial increase the parasitic rate.

The present invention provides a method for group breeding encarsia formosa in-door. The method comprises the following steps: (1) breeding method for whitefly, the method comprises that: daily transferring whitefly on fresh common bean seedlings with four leaves in first climate chamber for inoculation, wherein each cage is planted with four seedlings, each seedling is inoculated with 50 whitefly adults in the cages, and the conditions in the climate chamber is: L: D / / 14: 10, T / / 26-28 DEG C, TH / / 50-60%; after 24 hours, expelling the whitefly adults which have oviposited with a hair blower; transplanting the common bean seedlings with eggs to another climate chamber to feed for 10 days, when nymphs develop to 2-3 instars, one part of the plants are used to inoculate breeding encarsia formosa, and the other part of the plants are used to breeding whitefly; wherein conditions of the second climate chamber is: L: D / / 14: 10, T / / 25-27 DEG C, TH / / 50-60%. According to the method, encarsia formosa can be continuously and rapidly bred in high yield, so that damage caused by whitefly can be effectively controlled.

The invention discloses a method for preventing and controlling waxberry orchard fruit flies by using housefly pupas to replace fruit fly pupas for breeding parasitic wasps. The method comprises the steps of (1) housefly pupa obtaining and (2) pachycrepoideus vindemmiae breeding. Through the adoption of the technical scheme, pachycrepoideus vindemmiaes bred by the housefly pupas can realize higher control efficiency on the control of fruit flies, so the prevention and control cost is greatly reduced; the pachycrepoideus vindemmiae obtained by the method has the characteristics that the reproductive capacity is obviously higher, the progeny yield is obviously higher, the individual lifetime is obviously longer, the individuals are obviously larger, and the like.

The invention discloses a method of killing warehouse Ephestia elutella by cultivating adults of Habrobracon hebetor in batch and belongs to the technical field of warehouse prevention and treatment of pyralid moth pests. The method comprises the steps of S1, introducing host larvae of Habrobracon hebetor and first-generation adults of Habrobracon hebetor into a first rearing box, with suitable ambient conditions ensured and nutrients added regularly; S2, after second-generation eggs of Habrobracon hebetor in S1 grow into adults via egg-larva-moth process, transferring a second rearing box tothe ambient temperature of 2-6 DEG C until the adults are anaesthetized and immobilized by cold; transferring the adults of Habrobracon hebetor from the first rearing box to a transport box for truckloading; and S3, transporting the transport box into a warehouse with tobacco, transferring the adults of Habrobracon hebetor from the transport box into a release device; after larvae of Habrobraconhebetor occur on tobacco bales, opening the release device to release the larvae, so that the adults of Habrobracon hebetor may parasitically kill Ephestia elutella on the warehouse tobacco.

The invention discloses a method for efficiently reproducing brachymeria lasus by taking corcyra cephalonica pupae as hosts. According to the method, the cocooned corcyra cephalonica pupae which are refrigerated for 1.5 h at 5 DEG C are mainly taken as substitute hosts of the brachymeria lasus, the brachymeria lasus reproducing method is easy, convenient and rapid to oeprate, and the reproducing efficiency is high. Brachymeria lasus inoculation is conducted on the upper layer of a brachymeria lasus reproducing cage through the cocooned corcyra cephalonica pupae, the phototaxis of the brachymeria lasus is effectively utilized, the distance between the brachymeria lasus and a nutrient source and the hosts is shortened, the parasitism rate of the brachymeria lasus to the hosts and the feeding frequency are increased, the brachymeria lasus can be uninterruptedly and massively reproduced, therefore, scale production of the brachymeria lasus is achieved, and the obvious ecological benefit and economic benefit are achieved.

The invention relates to the field of biological control of agricultural pests and aims at providing an artificial propagation and production method for diadromus collaris. The method comprises the following steps: collecting and propagating bee species, producing hosts, inoculating and propagating plutella xylostella, developing plutella xylostella pupae, inoculating the diadromus collaris, culturing and collecting the diadromus collaris, and reserving the diadromus collaris species. According to the method, the superior bee species selection, bee propagation and beekeeping technology is perfected and the diadromus collaris is subjected to high-quality efficient large-batch propagation; in addition, the large-scale continuous production can be performed, the method is applied in the field of agricultural pest control and used for preventing the plutella xylostella, the agricultural production needs are met to a great extent, and very convenience is provided for biological control of cruciferous vegetable pests.

The invention belongs to the field of medicinal plants, and discloses an efficient cistanche parasitism method. The method includes the steps that in the suitable season, cistanche seeds soaked in a norflurazon water solution are coated on glass fiber filter paper, sacsaoul roots are wrapped by the glass fiber filter paper, sacsaoul is planted in a root controller filled with fine sand, and a micro-spraying hose is used for watering cultivation. Conditions suitable for cistanche parasitism are created manually, and the method is easy to operate, short in parasitism time and high in parasitism rate, saves material resources and manpower and effectively solves the problem of the low cistanche parasitism rate. The technology is suitable for parasitism treatment in the artificial cistanche planting process in the northwest province desert region including Ningxia.

The invention discloses a method for increasing the parasitic rate of wild silkworm Telenomus sp. parasitism in Dendrolimus punctatus Walker anatomy ovum, wherein the wild silkworm Telenomus sps that have not strayed other hosts are utilized to stray the Dendrolimus punctatus Walker anatomy ovum processed by the wild silkworm Telenomus sp host identification kairomone.

The invention discloses a sugarcane disease-and-insect-pest control method. The method includes the following steps that during the sugarcane seedling stage, urea, detergents and clean water are added in trapping basins with the diameter ranging from 20 cm to 30 cm according to the proportion of 1:1.5:110 and are mixed and stirred evenly, and lure cores are fixed to the positions 1 cm to 3 cm away from the water surfaces of the trapping basins; the trapping basins are evenly placed in a sugarcane cultivating field at 100 cm to 150 cm intervals, and 2 to 4 trapping basins are arranged per mu; after the sugarcane seedling stage, artificial host egg cards are evenly inserted on sugarcane leaves at 2 m to 3 m intervals, and the artificial host egg cards are replaced once every 15 days to 20 days; trichogrammas are released, wherein 10,000 to 20,000 trichogrammas are released pre mu every time, seventy five to one hundred and twenty releasing points are arranged per mu, and trichogramma releasing is conducted five to seven times all year. The sugarcane disease- and-insect-pest control method is easy to operate and environmentally friendly, the trichogrammas are adopted to control insect pests such as moths, the remarkable effect is achieved, the diseases and insect pests can be controlled effectively, the safe saccharose industry is guaranteed, the usage amount of the chemical pesticides in the sugarcane disease-and-insect-pest control process can be controlled beneficially, the risk that pesticide residues exceed the index in agricultural products is lowered, and the agricultural non-point source pollution is controlled.

The invention discloses a method for massively breeding Encarsia formosa based on Smallanthus sonchifolius as a host plant and relates to a novel method for breeding Encarsia formosa. Factory massivebreeding of Encarsia formosa is carried out using Smallanthus sonchifolius as an intermediate host plant and greenhouse whitefly as a host. The method comprises the steps of (1) cultivating healthy plants of Smallanthus sonchifolius; (2) breeding parents of greenhouse whitefly; (3) massively breeding host nymphs of greenhouse whitefly; (4) producing parents of Encarsia formosa; (5) massively breeding Encarsia formosa. The method has the advantages that Encarsia formosa is used as the intermediate host plant to massively breed Encarsia formosa, breeding cycles of greenhouse whitefly and Encarsia formosa are shortened, massive breeding quality of Encarsia formosa is further improved, and the method is significant to the factory breeding of Encarsia formosa.

The invention discloses a method for raising apanteles glomeratus. The method comprises the following steps that preparation work is carried out; brassica campestris is planted in a rearing cage and acollecting cage on a large scale; pieris rapae is caught and then placed in an insectary to be raised, and cabbage worm parent bodies are selected; the cabbage worm parent bodies are moved into the rearing cage to lay eggs, cabbage worms are collected for standby application, and at the moment, the cabbage worms are in a 1-age stage; apanteles glomeratus is reared on a large scale; the cabbage worms in the 1-age stage and pieris rapae pupas are added into the collecting cage to be raised, and cabbage worms in a 2-age stage and a plurality of apanteles glomeratus larvae are obtained after 64-72 hours; the apanteles glomeratus larvae are inoculated after complete eclosion; cabbage worms in a 3-age stage are obtained after 40-48 hours, and adult apanteles glomeratus is taken out; the adult apanteles glomeratus is collected in a new collecting cage; and the adult apanteles glomeratus and the apanteles glomeratus larvae are preserved. The method for raising apanteles glomeratus mainly solves the problem that biological control of insect pests at present pollutes the environment and destroys the ecological balance.

A technique for breeding a kind of wasp (tiny psocid wasp) with tussah pupa includes cutting open the tussah cocoon, selecting the cocoon containing living pupa, putting the wasp seeds in it, and laying aside at 18-28 deg.C and 60-80% humidity until the grown-up wasp comes out. Its advantages are quick and unified breeding speed, high survival rate. Said wasp is used to prevent and eliminate American Hyphantria.

The invention discloses a novel aphidius avenae reproduction card comprising a card body and a rubber piece. A rope is connected between the card body and the rubber piece, the card body is made of a yellow filter paper sheet and absorbs an aphids nutrient solution prepared by amino acid, vitamins, inorganic salt, trace elements, sugar and a willow extracting solution, and the rubber piece is attached under a plant leaf. By the arrangement, parasitic rate of aphidius avenae is improved, the aphidius avenae can be released by the aid of the aphidius avenae reproduction card which is easy to operate and timesaving and laborsaving, the card can be used in the field for a long time to have the aphids in the field trapped, and biological control effect of the alphidius avenae is improved. The card body can trap a great deal of aphids, the parasitic rate of the aphidius avenae is increased, advantages that the method of releasing the aphidius avenae by hanging the same on stiffen aphid leaves are kept by releasing the aphidius avenae by hanging the leaves in the field, and meanwhile, other existing defects are overcome. The novel aphidius avenae reproduction card is highly practical, low in price and wide in application prospect.

The invention relates to a parasitic natural enemy tetrastichus howardi of an invasive pest spodoptera frugiperda. The parasitic natural enemy tetrastichus howardi can effectively prevent and treat spodoptera frugiperda. A method comprises the following steps of performing propagation expanding on the parasitic natural enemy tetrastichus howardi, wherein initial pupae of yellow mealworms are usedas substitute hosts; performing spraying treatment on the initial pupae of the yellow mealworms for propagation expanding with an ethanol diluent (1000 times) of trans-beta-farnesene; and before release of adult tetrastichus howardi; and performing powder spraying with beauveria bassiana (D-1) powder (beauveria bassiana spore powder, dextrin, defatted corn flour and soybean lecithin), wherein theparasitic natural enemy tetrastichus howardi can carry beauveria bassiana to be accurately parasitic on the target pest spodoptera frugiperda in a directional manner, and a biocontrol substance can becolonized and can continuously control the pests. According to the technology, the propagation expanding cost is effectively reduced, and the parasitic efficacy, the stability and the persistence areimproved.

The invention discloses a multi-functional cup integrating rice field lamina color comparison and natural enemy releasing. The multi-functional cup comprises a color comparison cup body with the lower end open, a food groove and a connecting rod. A connecting hole and a ventilation hole are formed in the upper end face of the color comparison cup body, and a trichogramma card is attached to the inner wall of the color comparison cup body. The connecting rod penetrates through the connecting hole, the lower end of the connecting rod is connected with the food groove, and the food groove is located in the color comparison cup body. Due to the fact that colors of cup bodies different in green degree are compared with colors of rice field laminas, the fertilizer condition of a rice field can be timely judged, a farmer is instructed to appropriately perform topdressing and fertilizer controlling at appropriate time in the production process of grain, so that blind fertilizer application is avoided in the process of planting rice; meanwhile, the cup can serve as an emergence place of trichogramma before the trichogramma enters parasitic stem borer eggs of the rice field and provides a good emergence environment for the trichogramma, and the parasitic capacity, in the rice field, of the trichogramma is improved, so that the efficiency of pest control is promoted.

The invention discloses a method for obtaining a large amount of campoletis chorideae uchida wild populations. The method uses lepidoptera larvae to be manually released before tobacco leaves or cornleaves grow vigorously to trap campoletis chorideae uchida, and comprises the following specific steps of slightly brushing the lepidoptera larvae on tender leaves of the tobacco leaves or the corn leaves by using a writing brush before the tobacco leaves or the corn leaves grow vigorously; and trapping the campoletis chorideae uchida to lay eggs on the lepidoptera larvae, and manually collectingwild population cocoons of the campoletis chorideae uchida within a fixed time limit. The method further comprises the step that attractants are smeared on the tender leaves of the tobacco leaves or the corn leaves at the same time, and inducers are one or a mixture of more of host plant volatile matter, nectariferous plant extracts and parasitic information gland compounds. Compared with the prior art, the method for obtaining a large number of campoletis chorideae uchida wild populations provided by the invention can obtain a large number of populations within the fixed time limit, and is used for indoor propagation and rejuvenation.