41 results about "Coccinella septempunctata" patented technology

The invention discloses a method for determining influence of exogenous dsRNA on toxicity of ladybugs. The method comprises the following specific steps: uniformly mixing the exogenous dsRNA into a sucrose solution, directly feeding the ladybugs for 2-3 days and then feeding with pea aphids; then detecting and analyzing the expression changes of target genes in the ladybugs, and observing the biological changes of the ladybugs so as to evaluate the toxicity of the exogenous dsRNA to the ladybugs, wherein the ladybugs include harmonia axyridis, coccinella septempunctata or henosepilachna pusillanima. By the method, direct influence of the exogenous dsRNA on the toxicity of the harmonia axyridis, the coccinella septempunctata or the henosepilachna pusillanima or other ladybugs can be effectively determined; in addition, the method is simple, feasible and high in effectiveness and sensitivity, and has a great significance and an application prospect in study on functions of related genesas well as environmental risk assessment on related RNAi transgenic crops.

The invention discloses a diapause induction and cancellation method of natural enemy insect Coccinella septempunctata. The method comprises the steps of inducing adult of Coccinella septempunctata under condition of 18 DEG C and lighting period of L10:D14 to enable Coccinella septempunctata to enter diapause state; and transferring the Coccinella septempunctata in diapause state to a condition of 24 DEG C and lighting period of L16:D8 to recover development. The method has diapause induction rate close to 100% and diapause canceled in 7.52-8.62 days. The method is of great significance for large-scale propagating Coccinella septempunctata, prolonging shelf period and field prevention / control action time, grasping natural enemy insect development characteristic and occurrence dynamics, improving pest prevention / control efficiency, deepening understanding about natural enemy insect development mechanism, and investigating environment adaptability mechanism and evolution route of insect.

The invention provides an attractant for coccinella septempunctata. The attractant for the coccinella septempunctata consists of the following raw materials: 280 to 370 grams of triple superphosphate, 50 to 67 grams of diammonium and 21 to 30 grams of plant ash, wherein the ash rate of ramie root to tamarix to diversifolious poplar in the plant ash is 1:1:1. The attractant for the coccinella septempunctata is prepared by the following steps of: crushing the triple superphosphate and the diammonium into powder; mixing the power and the plant ash; and adding 18 to 35 kilograms of water to stir uniformly and spraying the mixture. The attractant for the coccinella septempunctata is sprayed for twice every year and aims to induce the coccinella septempunctata and kill aphids in the cotton field, wherein the first spraying time is from the twelfth day to the fifteenth day in June and germinated fruit branches of cotton is protected from being infringed by the aphids; the second spraying time is from the twenty-eighth day in July to the first day in August and cotton bolls are protected from being infringed by the aphids; and the spraying temperature is between 28 and 30 DEG C. By the attractant, the yield of the cotton can be increased by 60 to 80 kg / mu. When the attractant is sprayed on melon and fruit, vegetable, red date trees, walnut trees, Pyrus sinkiangensis trees and apple trees, the technical effect of inducing the coccinella septempunctata to kill the aphids is achieved.

The invention discloses a coccinella septempunctata diapause control method. The method comprise the following steps: (1) inducing a coccinella septempunctata adut under the conditions that the temperature is 18 DEG C and photoperiod is L10: D14, so that the coccinella septempunctata enters into a diapause state: (2) storing the coccinella septempunctata in the diapause state under the conditions that the temperature is 18 DEG C and the photoperiod is L10: D14 (or darker); and (3) after finishing the storage, carrying out recovery development on the coccinella septempunctata under the conditions that the temperature is 24 DEG C and the photoperiod is L16: D8. By using the coccinella septempunctata diapause control method provided by the invention, the diapause induction rate is near 100%, the storage term after the diapause can reach 114-183 days, and the diapause can be released for 7.52-8.62 days. The method has important effects of multiplying the coccinella septempunctata in large scale, prolonging the product shelf life, having field prevention and control functions, mastering the growing characteristics and develoment of the natural enemy insect, improving the pest control efficiency, enhancing the knowledge of the developmental mechanism of the natural enemy insect, exploring the adaptive mechanism and evolution of the insect to the environment and the like.

The invention belongs to the field of citrus planting and particularly relates to a citrus planting method. The citrus planting method comprises the following steps: 1) planting hole digging: weeds are removed from a land 15 days ahead of time and placed for 10 days or longer to be air-dried and then burned together, and burned ash and soil are tedded together to be sufficiently weathered; 2) seedling planting: a nutrient solution is prepared firstly, robust outplanting seedlings are soaked in the nutrient solution for 24 h and are bagged, soil which is the same as that in a transplanting environment is arranged in bags, and 5-10 coccinella septempunctata eggs are fed to each cubic centimeter of the soil; 3) fertilization: each citrus tree is taken as a circle center, an annular biodegradable plastic fertilizer bag is arranged in the position 20 cm away from the citrus root, and then soil covering is performed for planting; 4) honeycomb hanging: from February to April each year, 1-2 Cirrosplius ingennus honeycombs are hung for each mu of an orchard. Nutrition during citrus growth is guaranteed through special fertilization; the introduced coccinella septempunctata eggs are hatched to restrain pests, and Cirrosplius ingennus is introduced to control the pests.

The invention discloses a coccinella septempunctata feed as well as a preparation method and application thereof. 10 to 12 parts of sweet water, 8 to 10 parts of fish eggs, 6 to 8 parts of pork liver, 5 to 8 parts of yolk powder, 5 to 6 parts of bamboo flavone, 3 to 4 parts of teasaponin, 4 to 5 parts of vitamin complex, and 4 to 5 parts of olive oil are used as formula raw materials, and the formula raw materials are subjected to homogenate, dipping and mixing, so as to obtain the coccinella septempunctata feed. The coccinella septempunctata feed can replace aphid to be used as feed for coccinella septempunctata artificial feeding, fills the gap of the feed for coccinella septempunctata artificial feeding, can also improve the adaptability and the disease resistance of coccinella septempunctata and improve the biological control capacity, and can also be used as feed additive during the ecdysis of the coccinella septempunctata larva, and is mixed with aphid larva to feed coccinella septempunctata, so as to replenish the nutrition consumed during the ecdysis and promote the larva to grow fast.

The invention provides a composition and feed for feeding coccinella septempunctata, and a preparation method of the composition. The composition comprises the following components in parts by weight: 500-1000 parts of aphid treatment substances, 1-4 parts of [beta] carotene, 0.000001-0.00001 part of juvenile hormone and the like. The feed composition provided by the invention comprises the aphid treatment substance, the juvenile hormone and the [beta] carotene, wherein the aphid treatment substance has relatively comprehensive basic nutrients, the juvenile hormone has the characteristic of promoting ovarian development of adults, and the [beta] carotene has the characteristics of improving the survival rate of insects and protecting follicles and uterine cells. The egg laying amount and the hatching rate of the coccinella septempunctata fed by the composition have no significant difference from the egg laying amount and the hatching rate of the coccinella septempunctata fed by conventional bean aphids, and the feed is favorable to be stored and is conveniently used. The whole demand quantity of aphids can be reduced by about 20%, the space is saved by 50% or above, and the labor demand is reduced by 30% or above.

The invention discloses a diapause maintaining and cancellation method of Coccinella septempunctata. The method comprises the following steps: transferring Coccinella septempunctata entering diapause state to a condition of 18 DEG C and lighting period of L10:D14 (or dark) for storage; and after storage, transferring the Coccinella septempunctata to a condition of 24 DEG C and lighting period of L16:D8 to recover development. The method has diapause maintaining time of 114-183 days and diapause canceled in 7.52-8.62 days. The method is of great significance for large-scale propagating Coccinella septempunctata, prolonging shelf period and field prevention / control action time, grasping natural enemy insect development characteristic and occurrence dynamics, improving pest prevention / control efficiency, deepening understanding about natural enemy insect development mechanism, and investigating environment adaptability mechanism and evolution route of insect.

The invention discloses an artificial feed for raising adult coccinella septempunctata as well as a preparation method and application of the artificial feed. The feed is prepared from 30-50 grams of live pig livers, 5-12 grams of yolk, 100-200 milliliters of water, 15-25 grams of cane sugar, 0.5-2 grams of vitamins with minerals tablets (21), 5-10 grams of milk powder, 1-2 milliliters of olive oil, 2-4 grams of yeast powder, 2-5 grams of casein, 1-3 grams of albumen powder and 2-4 grams of agar. The biological indicators or the parameters of the coccinella septempunctata raised by the feed disclosed by the invention are mostly the same as the parameters of the coccinella septempunctata fed with bean aphid. The formula of the feed disclosed by the invention is low in cost and simple to compound, and food waste is reduced; the properties of the coccinella septempunctata fed with the feed are similar to those of the coccinella septempunctata fed with the bean aphid, the fecundity of the coccinella septempunctata fed with the feed is high, the development indicators of the filial generations of the coccinella septempunctata fed with the feed are normal, and the feed is suitable for application in mass propagation and popularization of the coccinella septempunctata.

The invention discloses a universal artificial feed for ladybirds and preparation and application methods of the universal artificial feed. The feed is prepared by mixing honey, citric acid anhydrous food grade and sunflower seed oil with Chinese oak silkworm pupae dry powder, flour weevil dry powder, peptone powder and aquae sterilisata as main raw materials. The preparation mode is simple and convenient, and the raw materials are cheap and available; the universal artificial feed is suitable for large-scale artificial feeding of the multiple ladybirds, such as coccinella septempunctata, harmonia axyridis, propylaea japonica; the multiple predacious ladybirds fed by the universal artificial feed are strong in vitality, are high in breeding capability, and are normal in filial generation growth index, and have the relatively high economical value.

The invention relates to a combined type aircraft based on barreled type launching and belongs to the technical field of aviation systems. The combined type aircraft is composed of an air traffic typemaster and a ladybird-imitated spherical-structure unmanned parasite aircraft, the ladybird-imitated spherical-structure unmanned parasite aircraft is launched out through a launching barrel, the characteristic of the high flight speed of the air traffic type master is used, the ladybird-imitated spherical-structure unmanned parasite aircraft is quickly transported to a task area, then the ladybird-imitated spherical-structure unmanned parasite aircraft is separated from the air traffic type master, and finally, the ladybird-imitated spherical-structure unmanned parasite aircraft is convertedinto a flight state from a folded state and starts to execute reconnaissance and monitoring tasks. The launching barrel adopts foldable design, and individual combat portability is greatly improved;and the ladybird-imitated spherical-structure unmanned parasite aircraft is designed through imitation of the appearance structure of coccinella septempunctata and has the folded state and the flightstate, in the folded state, the whole unmanned parasite aircraft is spherical and is convenient to store and carry, and in the flight state, the unmanned parasite aircraft is in a multi-rotor state and has good flight stability.

The invention discloses a method for construction and proliferating protection for a coccinella septempunctata carrier plant system. The coccinella septempunctata carrier plant system is a horsebean seedling, a substitute host is a Japanese vicia aphid, and a predatory natural enemy is coccinella septempunctata. The carrier plant system is beneficial to the proliferation and protection of naturalenemies in the early stage of occurring of pests, and effectively inhibits the pests before a large number of pests erupt, the colonization rate of natural enemy insects is increased by more than 50%compared with the direct release of ladybugs, and the method is maintained for a long time.

The invention relates to the technical field of tea planting, and particularly relates to a production management method for a tea garden. The management method comprises the following steps: plantingfield selection and management, intercropping management for ecological balance, weed management and control, fertilizer and water management, disease and pest prevention and control, trimming management for tree shapes, soli optimization management and tea picking technical management. The invention discloses the green, healthy, environment-friendly, high-efficient and systematic production management method for the tea garden. The disease and pest prevention and control is carried out through manual weeding and manual throwing of frogs and beneficial insects such as coccinella septempunctata, and a intercropping mode is adopted to maintain the ecological balance in the tea garden, so that the management method can effectively promote the healthy growth and the rapid growth of tea trees,increase the economic income of tea farmers, improve the quality of the tea raw materials, and reduce the environmental hazards and environmental pollution caused by planting.

The invention provides feed for larval coccinella septempunctata. The feed includes the following raw materials: egg, raw pork liver, water, milk powder, oat and yeast powder. The preparation method of the feed includes: (1) firstly cutting the raw pork liver into strips with a cutter, and then performing mashing into mud; (2) adding boiling water to soak the oat to soft; (3) adding the raw materials into a beaker, stirring the materials evenly with a stirrer, additionally weighing and adding agar and water into a pot, putting the pot on an electromagnetic oven to melt the agar, cooling the agar, then pouring the molten agar into the evenly stirred materials in the beaker, then fully stirring the substances, performing subpackaging in a culture dish, conducting sealing with a sealing film,and putting the product into a refrigerator for preservation. The invention has the advantages that after application to feeding of larval coccinella septempunctata, the feed can make the weight, pupation rate and eclosion rate of the larval coccinella septempunctata approach the level of those fed by aphids, is more beneficial to the maturation of larvae to adults, also the preparation method ofthe feed is simple, and is easy for large-scale operation, and the feed is easy for storage and large-scale popularization.

The invention discloses a ladybug attractant of an aphid natural enemy. The attractant comprises ladybug sex pheromone, synomone and kairomone; the synomone is aphid-induced plant volatile matters; and the kairomone consists of aphid warning pheromone, aphid body surface extracts and aphid honey dew volatile matters. The ladybug attractant has good attraction effects, good effect repeatability andhigh stability in both laboratory and field experiments, and has broad spectrum for beneficial ladybugs such as coccinella septempunctata, harmonia axyridis, propylaea japonica and the like.

The invention provides a fertilizer used during cabbage planting and relates to the technical field of vegetable planting. The fertilizer is prepared from, by weight, 15 parts of an aquatic product, 10 parts of maple leaves, 20 parts of earthworms, 10 parts of coffee beans, 10 parts of urea, 10 parts of diammonium phosphate, 4 parts of pig bones, 8 parts of sheep manure, 6 parts of club bottle gourd fruits, 5 parts of minced fillets, 6 parts of apples, 7 parts of small vegetables, 10 parts of calcium gluconate, 7 parts of zinc citrate, 1 part of ferrous sulfate, 5 parts of rice, 5 parts of banana peels, 4 parts of lady beetles, 4 parts of carboxymethyl starch, 5 parts of tobacco residues and 15 parts of a conditioning agent. The fertilizer is reasonable in method, convenient to operate and reasonable in proportion.

The invention relates to an insect capture lamp, in particular to a household coccinella septempunctata capture lamp. The household coccinella septempunctata capture lamp comprises a shell. A fixing cover is combined with the top end of the shell in a clamped mode, and a lamp holder is combined with one side of the fixing cover in a clamped mode. An LED bulb is arranged inside the fixing cover ina penetrating mode, a clamping block is connected with the interior of the fixing cover in a rotating mode, and a limiting pipe is welded at one end of the clamping block. A first fixing ring is welded at the bottom end of the limiting pipe, sliding channels are welded on the side face of the first fixing ring, and stop plates are arranged in the sliding channels. A turbine drives the stop platesto rotate through a first gear and a second gear. By the adoption of the household coccinella septempunctata capture lamp, the purposes that coccinella septempunctata on a household balcony is captured, and mosquitoes are killed can be achieved, and a good using effect is achieved. In addition, little insects can be killed by the use of the coccinella septempunctata, the food is supplied to the coccinella septempunctata, part of insects with the small size are killed, and the two purposes are achieved through one step.

The invention relates to a primer pair for detecting coccinella septempunctata. The primer pair sequence is shown as SEQ ID No.1 and SEQ ID No.2. The invention also relates to a reagent kit containing the primer pair and a detecting method for detecting coccinella septempunctata by virtue of the primer pair and the reagent kit. The detecting method is simple, fast, peculiar and sensitive.

The invention provides a method for breeding insects by using hydroponic plants. The method comprises the following steps of (1) cultivation of host plants, wherein seeds of the host plants are planted onto a hydroponics tank cover plate after being soaked in warm water or a sterilizing agent solution; (2) inoculation of pests, wherein when the height of host plant seedlings is 4.5-5.5 cm, each seedling is inoculated with 5-50 aphids; (3) inoculation of natural enemy insects, wherein stem sections or leaves with the pests are placed on a hydroponics tank and inoculated with the natural enemy insects after 1-2 weeks. The method for breeding the insects by using the hydroponic plants has the advantages that coccinella septempunctata is bred by breeding the aphids using hydroponic broad beanseedlings, water which is treated and repeatedly utilized easily replaces sand which is treated and repeatedly utilized difficultly, and the planting method, a nutrient solution and the hydroponics tank are optimized, thereby providing the simple, efficient and low-cost method for breeding the coccinella septempunctata.

The invention provides an attractant for coccinella septempunctata. The attractant for the coccinella septempunctata consists of the following raw materials: 280 to 370 grams of triple superphosphate, 50 to 67 grams of diammonium and 21 to 30 grams of plant ash, wherein the ash rate of ramie root to tamarix to diversifolious poplar in the plant ash is 1:1:1. The attractant for the coccinella septempunctata is prepared by the following steps of: crushing the triple superphosphate and the diammonium into powder; mixing the power and the plant ash; and adding 18 to 35 kilograms of water to stir uniformly and spraying the mixture. The attractant for the coccinella septempunctata is sprayed for twice every year and aims to induce the coccinella septempunctata and kill aphids in the cotton field, wherein the first spraying time is from the twelfth day to the fifteenth day in June and germinated fruit branches of cotton is protected from being infringed by the aphids; the second spraying time is from the twenty-eighth day in July to the first day in August and cotton bolls are protected from being infringed by the aphids; and the spraying temperature is between 28 and 30 DEG C. By the attractant, the yield of the cotton can be increased by 60 to 80 kg / mu. When the attractant is sprayed on melon and fruit, vegetable, red date trees, walnut trees, Pyrus sinkiangensis trees and apple trees, the technical effect of inducing the coccinella septempunctata to kill the aphids is achieved.

The invention belongs to the technical field of insect breeding and particularly relates to a method for trapping coccinella septempunctata for oviposition. According to the method for trapping the coccinella septempunctata for oviposition, a pea seedling carrying sufficient megoura japonica is used as a trapping material, by use of the taxis of the coccinella septempunctata to aphids, the coccinella septempunctata and the pea seedling carrying the sufficient megoura japonica are placed in an oviposition container for trapped oviposition, the trapping effect is obvious, the coccinella septempunctata can be trapped together, and gathered oviposition of the coccinella septempunctata is facilitated; a smooth black PE bag which has the high oviposition amount and is 0.1-0.2 mm thick is used asan oviposition carrier, the oviposition rate of the coccinella septempunctata and the recovery rate are effectively increased, the problems that the oviposition amount of the coccinella septempunctata and the recovery rate of eggs are low is solved effectively, and the method plays an important role in guaranteeing population reproduction of the coccinella septempunctata.

The invention relates to a fertilizer used for peach tree plantation in spring, which relates to the technical field of fruit tree plantation. The fertilizer comprises the following materials in parts by weight: 15 parts of aquatic product, 10 parts of fallen leaves, 20 parts of earthworm, 10 parts of coffee bean, 10 parts of urea, 10 parts of diammonium phosphate, 8 parts of pig fur, 8 parts of sheep manure, 6 parts of cucumber, 5 parts of fish bone, 6 parts of apples, 7 parts of brassica chinensis, 10 parts of calcium gluconate, 7 parts of sodium citrate, 5 parts of sodium citrate, 5 parts of wheat, 5 parts of banana skin, 4 parts of coccinella septempunctata, 4 parts of carboxy methyl starch, 5 parts of tobacco powder, and 15 parts of a finishing agent. The fertilizer has the advantages of reasonable process, convenient operation, and reasonable proportion.

The invention provides feed for adult coccinella septempunctata. The feed includes the following raw materials: milk powder, corn oil, protein powder, egg and water. The invention also discloses a preparation method of the feed. The method includes the steps of: (1) firstly cutting the raw pork liver into strips with a cutter, and then performing mashing into mud; (2) juicing fruits; (3) stirringthe substances evenly; (4) additionally weighing and adding agar and water into a pot, performing heating on an electromagnetic oven until the agar completely melts, taking out the agar, and when theagar cools to certain temperature, pouring the molten agar into the evenly stirred substances in the beaker involved in step (2), then fully mixing the materials, then conducting subpackaging in a culture dish, performing cooling to room temperature, then conducting sealing with a sealing film, putting the product into a refrigerator at 8DEG C and conducting preservation for standby use. The invention has the advantages that after application to feeding of adult coccinella septempunctata, the feed can make the weight, pupation rate, eclosion rate and reproductive capacity of the adult coccinella septempunctata approach the level of those fed by natural enemy aphids, also the preparation method of the feed is simple, and easy for large-scale operation, and the feed is easy for storage and large-scale popularization.

The invention belongs to the technical field of insect breeding and particularly relates to a device for trapping coccinella septempunctata for oviposition. According to the device for trapping the coccinella septempunctata for oviposition, a pea seedling carrying sufficient megoura japonica is used as a trapping material, by use of the taxis of the coccinella septempunctata to aphids, the coccinella septempunctata and the pea seedling carrying the sufficient megoura japonica are placed in an oviposition container for trapped oviposition, the trapping effect is obvious, the coccinella septempunctata can be trapped together, and gathered oviposition of the coccinella septempunctata is facilitated; a smooth black PE bag which has the high oviposition amount and is 0.1-0.2 mm thick is used asan oviposition carrier, the oviposition rate of the coccinella septempunctata and the recovery rate are effectively increased, the problems that the oviposition amount of the coccinella septempunctata and the recovery rate of eggs are low is solved effectively, and the method plays an important role in guaranteeing population reproduction of the coccinella septempunctata.

The invention discloses feed used during mixed culturing of crabs and freshwater shrimps, and relates to the technical field of family aquaculture. The feed is characterized by being prepared from, by weight, 10 parts of calcium citrate, 3 parts of flammulina velutipes, 8 parts of zinc gluconate, 6 parts of coccinella septempunctata, 4 parts of celery, 6 parts of cooked egg white, 5 parts of duck meat, 6 parts of rabbit duck meat, 1 part of iodised salt, 1 part of chicken essence, 4 parts of cod liver oil, 3 parts of kelp, 8 parts of green tea leaves, 6 parts of peony flower petals, 3 parts of lotus leaves, 4 parts of carrot cubes, 4 parts of deseeded cherries, 6 parts of small dried carp powder and 10 parts of a conditioning agent. According to the feed, the method is reasonable, operation is convenient, and the proportion is reasonable.

The invention discloses a method for preventing and controlling greenhouse vegetable aphids and belongs to the technical field of horticultural cultivation. The method for preventing and controlling greenhouse vegetable aphids comprises the steps of cultivating thick growth of Artemisia argyi; releasing Coccinella septempunctata or Chrysopa perla; planting crops; hanging yellow insect-sticking boards; and harvesting the crops. According to the invention, aphids are prevented and controlled through the co-action of Artemisia argyi, Coccinella septempunctata or Chrysopa perla and the yellow insect-sticking boards; specifically, aphids are attracted to tender leaves of Artemisia argyi through sitotaxis of the aphids to the tender leaves of Artemisia argyi, Coccinella septempunctata or Chrysopa perla is released to prey on the aphids, and the yellow insect-sticking boards are hung above the Artemisia argyi so that the winged aphids are attracted to the yellow insect-sticking boards and cannot escape through characteristic of the aphids moving in response to yellow. The co-action of the Artemisia argyi, Coccinella septempunctata or Chrysopa perla and the yellow insect-sticking boards brings good aphid control effect, crops can be prevented from being damaged by aphids, the population density of aphids in a field can be rapidly and effectively reduced, pesticide residues and aphid drug resistance cannot be caused, and physical and biological aphid control is achieved.

The invention discloses a nutrition additive for home cultivation of radix tinosporae, and relates to the technical field of pot-plant home culturing and cultivation. The nutrition additive is characterized by being prepared from the following materials in parts by weight: 10 to 14 parts of ammonium bicarbonate, 8 to 12 parts of potassium chloride, 3 to 7 parts of watermelons, 4 to 8 parts of millet, 3 to 7 parts of carrots, 2 to 5 parts of soybeans, 2 to 7 parts of kiwi fruits, 1 to 4 parts of cherry tomatoes, 5 to 9 parts of calcium gluconate, 3 to 7 parts of coccinella septempunctata, 4 to 8 parts of cockroaches, 3 to 8 parts of blood worms, 3 to 7 parts of modified red soil, and 17 to 22 parts of nutritional agent. The nutrition additive is convenient to operate, a method is reasonable, and the use is convenient.

The invention belongs to the technical field of insect cultivation, and in particular relates to a device for luring ladybugs to lay eggs. The device for trapping the seven-star ladybug to lay eggs described in the present invention uses the pea seedlings planted with sufficient Prunus pea as the trapping material, utilizes the tropism of the seven-star ladybug to the aphids, and mixes the seven-star ladybug with the sufficient pea prunus Put the pea seedlings of the tail aphid in the spawning container for trapping and laying eggs, which has obvious trapping effect, and can lure the seven-star ladybugs together, which is conducive to their aggregation and laying eggs; and the smooth one with a high number of laying eggs The black PE bag with a thickness of 0.1‑0.2mm is the egg carrier, which effectively improves the egg laying rate and recovery rate of the seven-spot ladybug, and effectively solves the problem of low egg production and egg recovery rate of the seven-spot ladybug. It plays an important role in population reproduction.

The invention provides a feed for feeding crabs, and relates to the technical field of domestic feeding of aquatic products. The feed is characterized by being prepared from the following materials in parts by weight: 5 parts of calcium gluconate, 5 parts of sodium citrate, 5 parts of dried black carp powder, 1 part of gourmet powder, 5 parts of rose flowers, 4 parts of dry chrysanthemum flowers, 4 parts of green tea leaves, 4 parts of mung beans, 5 parts of soybeans, 4 parts of cooked duck yolk, 5 parts of cattle gristle, 2 parts of hot red peppers, 4 parts of carrot dices, 3 parts of coccinella septempunctata, 4 parts of pitaya peel, and 6 parts of a conditioning agent. The method disclosed by the invention is reasonable, convenient to operate and reasonable in compounding ratio.