CN113951023A - Method for preventing and treating mango thrips by utilizing orius minutus - Google Patents
Method for preventing and treating mango thrips by utilizing orius minutus Download PDFInfo
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- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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Abstract
The invention discloses a method for preventing and treating mango thrips by utilizing orius minutus, which comprises the following steps: step one, indoor breeding of pure orius minutus: step 1, building a greenhouse; step 2, planting the refuge plants; step 3, accessing the frankliniella; step 4, inoculating the orius minutus; step two, the release of the orius minutus: the orius minutus is released into the mango garden in an indirect release or direct release mode, and the orius minutus can fly onto a mango tree to eat the thrips so as to achieve the effect of controlling the thrips. According to the method, the stinkbug is thrown in the mango garden to control natural enemies of the mango thrips, so that the application of chemical insecticides can be reduced, and the thrips cannot generate drug resistance to the stinkbug, so that the growth of the thrips in the mango garden is inhibited.
Description
Technical Field
The invention belongs to the technical field of biological control, and relates to a method for controlling mango thrips by utilizing orius minutus.
Background
Thrips pests are one of the most important pests in modern fruit and vegetable production. Among the major types of Thrips which are harmful in agricultural production are Thrips palmi Karny (Thrips palmi Karny), Thrips occidentalis (Frankliniella occidentalis), Thrips palmi (Scirothrips dorsalis), Thrips palmi (Trips hawaiensis), and Thrips palmi (Seirtothrips rubrous) which cause direct damage by feeding and spawning and often cause indirect damage by spreading plant viruses, resulting in destructive damage to crops.
Mango is an important economic fruit tree planted in tropical and subtropical regions in China, and is a main fruit market in south China. The cultivation of mangoes is generally an open orchard environment, and a small amount of protected agriculture is planted. Among the numerous pests that harm mangos, thrips have increased in recent years to the first pests that affect mango quality and yield. The thrips has small body type, wide hosts, high propagation speed and strong general drug resistance, and the drug resistance of the thrips in tropical regions is obviously stronger than that of other regions, even the occurrence of the thrips in a mango garden cannot be effectively controlled by using conventional chemical insecticides. With the consumption and the upgrade of agricultural products in China, the continuously improved orchard production standard puts new demands on the green prevention and control of thrips. And a biological control means represented by a natural enemy of thrips, namely orius minutus becomes an important control measure for the thrips.
Major predators of Orius genus (Orius spp.) of Orius family (Anthocidae) include thrips, aphids, mites, Lepidoptera eggs, and hatched larvae, and are important natural enemies in agricultural fields and facility farmlands. Since the research on the orius minutus is early in the country, mature natural enemy products such as orius minutus O.insidiosus used in North America have achieved good control effect on the Frankliniella occidentalis on cucumbers. The species with research foundation in China are orius pollicis guenee O.sauteri, orius pollicis guenee O.strigicollis and orius micatus O.mimutus; but the application cost is higher at present. The orius minutus is an effective predatory natural enemy in the field, and the main predatory objects of the orius minutus comprise thrips, aphids, mites, lepidoptera eggs, newly hatched larvae and the like, and the orius minutus is an important natural enemy in farmlands and facility farmlands. The sea island orius minutus O.maxidentex is distributed in tropical and subtropical areas of North Africa, Central Asia and south Asia, and is a newly recorded orius minutus species in China in recent years. The natural enemies occur in the southern sea island all year round, and can prey on tea yellow thrips, Echinothrips americanus Morgan, yellow thorny thrips, tobacco thrips, etc.
The natural enemy shelter is also called as a natural enemy shelter and is a place which is artificially established and provides beneficial inhabitation for natural enemies, such as cultivation of honey source plants, provision of spawning sites, resistance to severe weather and the like. Biological control is an important measure in the comprehensive control of pests, and the key element is to throw natural enemies before the explosive growth of the pests so that the number of the pests is suppressed to realize the effect of controlling the pests. However, the important orius minutus of the thrips has the characteristics of large predation amount and poor hunger resistance, and when the orius minutus is applied to fields, if effective food supplement is not available during release, the phenomena of self-killing and the like are easy to occur, so that the number of natural enemies is greatly reduced. The orius minutus is a facultative feeder, can eat pollen, nectar and plant juice, and can live transiently in modes of eating the plant juice and the like under the condition of no animal protein supplement, so that natural enemy shelter is provided for the orius minutus, and the field survival rate of the orius minutus can be remarkably improved.
However, the existing method for controlling mango thrips by utilizing orius minutus has the following problems:
1. the orius minutus is used as a natural enemy product, the orius minutus needs to be separated in a release link, nymphs or adults of the orius minutus are directly released in the field, and the orius minutus is difficult to find a proper habitat at the first time, so that the death rate of the orius minutus can be increased, and the control effect is usually greatly reduced in a mode of directly releasing the orius minutus in actual control.
2. Thrips in mango orchards are large in biomass and fast in occurrence, the traditional orius microphyllus is used for prevention and treatment, a large amount of natural enemy individual investment is needed, the cost is huge, and the popularization of actual prevention and control in fields is not facilitated.
3. The mango trees are woody plants, the leaves are thick and solid, the leaf surfaces are waxy, most kinds of lygus minutus cannot lay eggs or supplement moisture on the mango trees, the environment of the mango garden is usually dry and is not beneficial to the survival of the lygus minutus, and therefore the persistence of the lygus minutus after being released in the mango garden is poor.
4. Most of mango trees are cultivated in the open air, the influence of the environment on natural enemies is large, and if the natural enemy products are not accommodated at the inhabitation place of the orius minutus, the natural enemies can be transferred to other areas due to direct release of the natural enemy products, so that the control effect on target crops is influenced.
5. The mango tree is not only pests such as thrips, but also chemical agents are not used for a long time by a traditional direct release method of natural enemies, so that rampant of non-thrips pests can be brought.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for controlling mango thrips by utilizing orius minutus.
The purpose of the invention is realized by the following technical scheme:
a method for controlling mango thrips by utilizing orius minutus comprises the following two technical schemes:
the first technical scheme is as follows:
step one, indoor breeding of pure orius minutus:
step 1, greenhouse construction: opening a greenhouse for building an insect-proof net near a mango garden, and carrying out the breeding work of the orius chinensis two months before the mango blossom is promoted;
insect prevention measures should be taken in the greenhouse, thin fertilizer should be applied by daily watering, and the insecticide should be sprayed once before the sheltered plants bloom, so as to obtain insect-free clean seedlings; the shelter plant can be plant species on which the small plant bugs such as the pennisetum hydridum, the alfalfa, the daisy and the like can live besides the bidens alba;
step 3, thrips accessing: after the refuge plants bloom, purifying and separating the frankliniella occidentalis, and then inoculating the refuge plants into a refuge plant room, and continuing breeding for 15-20 days until a large number of frankliniella occidentalis appear in inflorescences of the refuge plants;
step 4, inoculating the orius minutus: after a large number of frankliniella marmoratus appear in the inflorescence of the shelter plant, the stinkbug is inoculated into the shelter plant, breeding is continued for 15-25 days until the individual ratio of the frankliniella marmoratus to the stinkbug reaches 1:1, wherein:
the small stinkbug is the small stinkbug with the sea island, eggs of the small stinkbug with the sea island can be laid in tissues of the plant flowers of the shelter, and one flower can carry more than 10 eggs, so that the subsequent introduction work of the small stinkbug is facilitated, and the small stinkbug can be small stinkbug with a small wing, small stinkbug with east asia, small stinkbug with south china and the like besides the small stinkbug with the sea island;
step two, the release of the orius minutus:
the tiny flower bugs are released into the mango garden in an indirect release or direct release mode, the tiny flower bugs can fly onto mango trees to eat thrips, and therefore the effect of controlling the thrips is achieved, wherein:
in an orchard managed by a non-organic standard, in order to reduce the base number of thrips, unified pesticide spraying can be carried out on mango trees and refuge plants 10-20 days before the orius minutus is introduced into a mango garden to kill pests;
the indirect release mode of the orius minutus is more suitable for being adopted by mango orchards in Hainan areas with finer management conditions, and the method comprises the following specific steps:
planting sheltered plants: planting the refuge plants among or around the rows of mango trees, planting 1 mango tree in a quantity of 1-3 square meters or 1 mango tree in a quantity of 10-200 refuge plants, and performing supplementary cultivation of the refuge plants every 2 months;
secondly, introducing the orius minutus: introducing the indoor bred orius minutus into a mango garden, wherein the introduced form can be a net insect or a refuge plant flower carrying the orius minutus, or a refuge plant carrying the orius minutus, the number of the introduced orius minutus is 1 and corresponds to 50-1000 orius minutus, the orius minutus can live in the refuge plant flower, the number of the orius minutus is gradually increased after the orius minutus is put in the garden, and the increase of the number of thrips is controlled in the orius;
thirdly, performing later maintenance, namely watering and trimming the refuge plants regularly to ensure the living space of the orius minutus, and supplementing the orius minutus in time when the number of the orius minutus is reduced;
the method for directly releasing the orius minutus is more suitable for a slightly extensive-management mango garden, and comprises the following specific steps:
firstly, introducing a host plant: transferring the indoor bred orius minutus-refuge plant complex into a mango orchard 1-2 days before catalysis of mango;
secondly, shelter plant placement: transplanting or placing the orius minutus-shelter plant complex under mango trees, arranging the orius minutus around mango tree trunks, enabling the orius minutus to fly onto the mango trees from the shelter plant flowers, and taking and eating thrips so as to achieve the effect of controlling the thrips;
thirdly, later maintenance: the refuge plants are watered regularly, withered and missing refuge plants are supplemented, and meanwhile, the placement area of the refuge plants is adaptively adjusted according to the distribution area of the thrips.
The second technical scheme is as follows:
in the case where the thrips are not bred under the proper conditions for raising the stinkbugs, purchasing a certain number of products suitable for raising the local stinkbugs or purchasing a certain number of natural enemy products suitable for the local stinkbugs, and releasing the products onto shelter plants in the mango garden can be adopted, and the specific method is as follows:
step one, refuge plant planting: planting the refuge plants among or around the rows of mango trees, planting 1 mango tree in a quantity of 1-3 square meters or 1 mango tree in a quantity of 10-200 refuge plants, and performing supplementary cultivation of the refuge plants every 2 months;
step two, introducing the orius minutus: introducing the orius minutus into a mango garden, wherein the introduced amount is that 50-1000 orius minutus are corresponding to 1 orius tree, the orius minutus can live in the plant flowers of the shelter, the amount of the orius minutus is gradually increased after the orius minutus is put into the mango garden, and the increase of the amount of the thrips is controlled in the mango garden;
and step three, later-period maintenance, namely watering and trimming the refuge plants regularly to ensure the living space of the orius minutus, and timely supplementing when the number of the orius minutus is reduced.
Compared with the prior art, the invention has the following advantages:
1. according to the method, the stinkbug is thrown in the mango garden to control natural enemies of the mango thrips, so that the application of chemical insecticides can be reduced, and the thrips cannot generate drug resistance to the stinkbug, so that the growth of the thrips in the mango garden is inhibited;
2. according to the method, the shelter plants are planted to serve as the natural shelter for the orius miniatus, so that the biological diversity of the mango garden can be enriched, the natural enemies released by the method in tropical regions can live in the mango garden for a long time, and the thrips can be prevented from erupting in the mango garden for a long time;
3. according to the method, refuge plants are periodically planted in the field, the refuge plants have flowers all the year round, when the number of thrips is too low, the stinkbug can eat nectar and pollen from the refuge plant flowers, so that the situation that the survival of natural enemies is influenced due to the fact that enough food cannot be obtained is avoided, when the environment is poor such as spraying a pesticide on a mango tree, the stinkbug can be transferred to the refuge plant flowers to avoid, and the implementation of other pest chemical pesticide prevention and control measures on the mango tree is not influenced when necessary;
4. according to the method, the shelter plants are planted in the field in a large quantity, the shelter plants can provide living places for the orius minutus, and the orius minutus population can be formed after the orius minutus is introduced into the mango garden, so that the number of initial natural enemies is reduced, and the manpower and the purchase cost of the natural enemies are saved.
Drawings
FIG. 1 is a schematic diagram of the position relationship between mango trees and Bidens alba when the sea island orius minutus-Bidens alba complex is used for controlling thrips in a mango garden, wherein: 1-mango tree, 2-lygus lucorum-bidens alba complex.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but not limited thereto, and any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention shall be covered by the protection scope of the present invention.
The invention provides a method for preventing and treating mango thrips by utilizing orius minutus, which comprises the following steps:
step one, greenhouse construction: opening a greenhouse for building an insect-proof net near a mango garden, and carrying out the breeding work of the orius chinensis two months before the mango blossom is promoted;
step two, planting the bidens alba: firstly accelerating germination of bidens alba seeds, planting the bidens alba seeds in a greenhouse, cultivating the bidens alba seeds for 20-30 days at the temperature of 15-25 ℃, cultivating the bidens alba seeds until the bidens alba flowers, making insect prevention measures in the greenhouse, watering the bidens alba seeds daily and applying a thin fertilizer, spraying an insecticide once before the bidens alba flowers to obtain an insect-free clean seedling, and sheltering plants, except the bidens alba seeds, can be plant species on which small flower bugs such as pennisetum frutescens, alfalfa, daisy and the like can live;
step three, thrips accessing: after the bidens alba flowers, purifying and separating the thrips, inoculating the purified and separated thrips into a bidens alba room, continuing breeding for 15-20 days until a large number of thrips appear in the inflorescence of the bidens alba, and under the condition that the thrips are cultured under the condition which is not suitable for breeding the stinkbug, purchasing a certain number of products which are suitable for breeding local stinkbug or purchasing a certain number of natural enemies of the stinkbug which are suitable for the local area, releasing the products onto a shelter plant in a mango garden, and using the products to breed the stinkbug;
step four, inoculating the orius minutus: after a large number of thrips appear in the sponish needles herb inflorescence, the stinkbug is accessed between the sponish needles herb, the stink-bug feeds on the thrips, spawning propagation is carried out, propagation is continued for 15-25 days until the individual ratio of the thrips to the stinkbug reaches 1:1, the accessed stinkbug is sea island stinkbug, the sea island stinkbug is distributed in the areas of north africa, middle asia and islands, and is suitable for living environment of tropical areas, the sea stinkbug occurs in south China especially all the year round in the sea island, and the plant is more suitable for field high-temperature and drought environment conditions of open-air cultivated crops relative to the species of the southern stinkbug; the sea-island tiny flower bugs have good growth conditions on the bidens alba plants, can be propagated in large quantities, eggs can be laid in tissues of the bidens alba flowers, one flower can carry more than 10 eggs, nymphs can also take the bidens alba pollen in the flowers to supplement sugar, and the bugs can fly out of the flowers in an adult stage, except the sea-island tiny flower bugs, the tiny flower bugs can also be the tiny wing bugs, the tiny east Asian tiny bugs, the tiny southern tiny bugs and the like;
step five, releasing the orius minutus: the cultivated orius minutus is released into a mango garden in an indirect release or direct release mode, the orius minutus can fly onto mango trees and eat thrips to achieve the effect of controlling the thrips, and in an orchard managed by non-organic standards, in order to reduce the base number of the thrips, the orius minutus can be uniformly sprayed with a pesticide for killing pests 10-20 days before the orius minutus is introduced into the mango garden;
step six, later maintenance: regularly watering and maintaining the bidens alba and simultaneously supplementing the missing and withered bidens alba.
Example 1:
the orius minutus adopts an indirect release mode, and the specific steps are as follows:
step one, planting bidens alba: weeds in rows of a mango garden need to be cleared, the land of the mango garden is kept bare or the mango is not easily affected by grass covering such as false peanuts during cultivation, bidens alba is planted between rows or at the periphery of a mango tree 1, the number of 1-3 square meters corresponding to 1 mango tree 1 or 10-200 bidens alba corresponding to 1 mango tree 1 are planted, supplementary cultivation of bidens alba is carried out every 2 months, the bidens alba can keep the flower form in the mango garden every year after continuous cultivation for 3-5 times, and therefore the continuous survival of the stinkbug can be guaranteed;
step two, introducing the orius minutus: introducing indoor bred stinkbug into a mango garden 10-20 days before mango blossom, wherein the introduced form can be insect-removing, or a beggar-ticks flower with stinkbug, or a beggar-ticks plant with stinkbug, 1 mango tree 1 is introduced to correspond to 50-1000 bugs, the bugs can live in the beggar-ticks flower, the number of the bugs is gradually increased after the bugs are put in the garden, the increase of the number of the thrips is controlled in the mango garden, and the bugs can be directly collected and separated in the field and then released to shelter plants in the mango garden under the condition that no proper conditions exist for cultivating the bugs;
step three, later maintenance: regularly watering and pruning the bidens alba to ensure the living space of the stinkbug, and timely supplementing when the number of the stinkbug is reduced.
Example 2
The orius minutus is directly released, and the specific steps are as follows:
step one, introducing a host plant: transferring the indoor bred stinkbug-bidens bipinnata complex 1 to a mango garden 1-2 days before mango catalysis according to the occurrence rule of field mango thrips;
step two, placing bidens alba: transplanting or placing the bidens alba under the mango tree 1, arranging around the mango tree trunk, enabling the stinkbug to fly from the bidens alba to the mango tree, and eating the thrips so as to achieve the effect of controlling the thrips;
step three, later maintenance: watering the bidens alba at regular intervals, supplementing withered and missing bidens alba, and simultaneously carrying out adaptive adjustment on the placement area of the bidens alba according to the distribution area of the thrips.
The small flower stinkbug in the bidens parviflora exists in the insect state of adults, nymphs and eggs, the small flower stinkbug can fly from the bidens parviflora to the mango tree 1, the thrips are eaten, the small flower stinkbug can fly back to the bidens parviflora for avoiding when the temperature of the mango tree 1 is high or chemical agents are applied, the small flower stinkbug can be quickly transferred by adopting a mode of placing the bidens parviflora under the mango tree 1, so that the delivery of the small flower stinkbug is corrected according to the distribution area of the thrips, and the method is more suitable for the mango garden slightly under extensive management.
Example 3:
the method for preventing and treating mango thrips by utilizing the sea island orius minutus-bidens parviflora complex comprises the following specific implementation method:
setting 1 blank control and 2 treatments, namely biological control treatment of the stinkbug-white flower and sticktight complex 2 and chemical control treatment of spraying 25% thiamethoxam, repeating the treatments for 3 times, selecting a square area of 10 multiplied by 10 plants as a cell, and setting an isolation area of 20 meters between the cells;
placing the dolichos minutissima-bidens complex 2 between rows of the mango tree 1 one week before mango blossom, placing 200 pieces of dolichos bidens in each cell, and carrying 100 sea island dolichos minutissima on each plant on average;
step three, the chemical control area is carried out according to a normal thrips prevention and control treatment process, and the blank control area is only subjected to conventional field management;
step four, data recording: surveying the thrips base number in each cell before blooming, wherein the surveying method is a five-point method, 1 mango tree 1 is selected for each point, 3 leaves are respectively selected in 4 directions of the mango tree 1, the thrips mouth base number is recorded, the thrips mouth is counted by the total number of various mango thrips imagoes and nymphs, and the total number of thrips eggs is not counted;
step five, analyzing experimental data and results: the experimental data were analyzed by calculation, with the following calculation criteria:
the reduction rate (%) of population is (number of pests before release-number of pests after release)/number of pests before release × 100%
Control effect (%) - (treatment oral cavity decline rate-contrast oral cavity decline rate)/(1-contrast oral cavity decline rate) × 100%
The results after data analysis processing are shown in table 1.
TABLE 1
Note: the data in table 1 are mean ± sem, and different letters after the same column of data show significant differences between different treatments (P <0.05, LSD test);
step six, obtaining a result: the result shows that the stinkbug-bidens parviflora complex 2 has a good control effect on mango thrips in a mango garden, the long-term control effect is close to 90%, the growth speed of the number of the thrips in the mango garden can be effectively controlled, and the stinkbug-bidens parviflora complex 2 has the characteristics of long-lasting pest control and low long-term use cost compared with a chemical control method.
In summary, it can be known from the embodiment 1 and the embodiment 2 that the orius minutus can be released in an indirect release manner and a direct release manner, the orius minutus is enabled to form a population by planting the bidens alba in the indirect release manner, the number of initial natural enemies is reduced, manpower and the purchase cost of the natural enemies are saved, the orius minutus-bidens complex 2 can be moved at any time by directly transferring the orius minutus-bidens complex 2 into a mango garden in the direct release manner, and the orius minutus can return to the bidens alba to avoid when the temperature of the mango tree 1 is high or a chemical agent is sprayed; combining the example 1, the example 2 and the example 3, the thrips control method adopting the lygus minutus-bidens alba complex 2 can effectively control the increase of the number of thrips in the mango garden, and the effect is better compared with a chemical control method.
Claims (10)
1. A method for controlling mango thrips by utilizing orius minutus is characterized by comprising the following steps:
step one, indoor breeding of pure orius minutus:
step 1, greenhouse construction: opening a greenhouse for building an insect-proof net near a mango garden, and carrying out the breeding work of the orius chinensis two months before the mango blossom is promoted;
step 2, refuge plant planting: firstly, accelerating germination of seeds of the refuge plants, planting the seeds in a greenhouse, and culturing for 20-30 days at the temperature of 15-25 ℃ until the refuge plants bloom;
step 3, thrips accessing: after the refuge plants bloom, purifying and separating the frankliniella occidentalis, and then inoculating the refuge plants into a refuge plant room, and continuing breeding for 15-20 days until a large number of frankliniella occidentalis appear in inflorescences of the refuge plants;
step 4, inoculating the orius minutus: after a large number of frankliniella marmoratus appear in the inflorescence of the shelter plant, the stinkbug is inoculated into the shelter plant, and breeding is continued for 15-25 days until the individual ratio of the frankliniella marmoratus to the stinkbug reaches 1: 1;
step two, the release of the orius minutus:
the orius minutus is released into the mango garden in an indirect release or direct release mode, and the orius minutus can fly onto a mango tree to eat the thrips so as to achieve the effect of controlling the thrips.
2. The method for controlling mango thrips by utilizing orius minutus according to claim 1, wherein insect prevention measures should be taken in the greenhouse, daily watering and applying a thin fertilizer should be carried out, and before refuge plants bloom, an insecticide should be sprayed once to obtain insect-free clean seedlings.
3. The method for controlling mango thrips by utilizing orius minutus according to claim 1, characterized in that the specific steps of the indirect release are as follows:
planting sheltered plants: planting the refuge plants among or around the rows of mango trees, planting 1 mango tree in a quantity of 1-3 square meters or 1 mango tree in a quantity of 10-200 refuge plants, and performing supplementary cultivation of the refuge plants every 2 months;
secondly, introducing the orius minutus: introducing the indoor bred orius minutus into a mango garden, introducing 50-1000 orius minutus corresponding to 1 orius, enabling the orius minutus to live in the shelter plant flowers, gradually increasing the number of the orius minutus after the orius minutus is put in the mango garden, and controlling the increase of the number of the thrips in the mango garden;
and thirdly, later-period maintenance, namely watering and trimming the refuge plants regularly to ensure the living space of the orius minutus, and timely supplementing when the number of the orius minutus is reduced.
4. The method for controlling mango thrips with orius minutus according to claim 3, characterized in that the orius minutus is introduced in the form of a net worm, a refuge plant flower with orius minutus, or a refuge plant with orius minutus.
5. The method for controlling mango thrips by utilizing orius minutus according to claim 1, characterized in that the specific steps of the direct release are as follows:
firstly, introducing a host plant: transferring the indoor bred orius minutus-refuge plant complex into a mango orchard 1-2 days before catalysis of mango;
secondly, shelter plant placement: transplanting or placing the orius minutus-shelter plant complex under mango trees, arranging the orius minutus around mango tree trunks, enabling the orius minutus to fly onto the mango trees from the shelter plant flowers, and taking and eating thrips so as to achieve the effect of controlling the thrips;
thirdly, later maintenance: the refuge plants are watered regularly, withered and missing refuge plants are supplemented, and meanwhile, the placement area of the refuge plants is adaptively adjusted according to the distribution area of the thrips.
6. The method for controlling mango thrips with orius minutus according to claim 1, 2, 3, 4 or 5, wherein the refuge plant is one or more of bidens alba, pennisetum foenum-graecum, alfalfa, daisy.
7. The method for controlling mango thrips with orius minutus according to claim 1, 3, 4 or 5, characterized in that the orius minutus is one or several of orius island, orius halluciflorus, orius donutus and orius pollidipennis.
8. A method for controlling mango thrips by utilizing orius minutus is characterized by comprising the following steps:
step one, refuge plant planting: planting the refuge plants among or around the rows of mango trees, planting 1 mango tree in a quantity of 1-3 square meters or 1 mango tree in a quantity of 10-200 refuge plants, and performing supplementary cultivation of the refuge plants every 2 months;
step two, introducing the orius minutus: introducing the orius minutus into a mango garden, wherein the introduced amount is that 50-1000 orius minutus are corresponding to 1 orius tree, the orius minutus can live in the plant flowers of the shelter, the amount of the orius minutus is gradually increased after the orius minutus is put into the mango garden, and the increase of the amount of the thrips is controlled in the mango garden;
and step three, later-period maintenance, namely watering and trimming the refuge plants regularly to ensure the living space of the orius minutus, and timely supplementing when the number of the orius minutus is reduced.
9. The method for controlling mango thrips with orius minutus according to claim 8, characterized in that the refuge plant is one or several of bidens alba, setaria italica, alfalfa, daisy.
10. The method for controlling mango thrips by utilizing orius minutus according to claim 8, wherein the orius minutus is one or more of sea island orius, Lepidus obscurus, east Asian orius minutus and Oriusmius micranthum.
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