Breeding method of harmonia axyridis

A technology of ten-spotted ladybug and ten-spotted ladybug, which is applied in animal husbandry and other fields, can solve problems such as the lack of breeding methods of ten-spotted ladybug, and achieve rapid response to natural disasters of aphids, simple breeding methods, and mild breeding conditions Effect

Pending Publication Date: 2022-02-25
CHONGQING ACAD OF AGRI SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention intends to provide a method for raising the ten-spotted ladybug, specifically a method for using aphids to breed the ten-spotted ladybug on a large scale, so as to solve the problem of lack of breeding methods for the ten-spotted ladybug in the prior art

Method used

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  • Breeding method of harmonia axyridis
  • Breeding method of harmonia axyridis
  • Breeding method of harmonia axyridis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Examples 1-14, comparative examples 1-4 are shown in Table 1 as shown in Table 1. Take embodiment 1 as example, illustrate the breeding method of ten-spotted ladybug:

[0034] Example 1:

[0035] A kind of raising method of ten-spotted ladybug, comprises the steps:

[0036] S1: Prepare broad bean seedlings: soak broad beans for 12 hours and sow them on trays containing substrates at intervals of 3*5cm, cover substrates after sowing, and water evenly until the substrates are held together by hand; control the temperature at 25°C and cultivate Wait until the seedlings are 5-7cm long;

[0037]S2: Propagation of bean aphid: Inoculate broad bean seedlings with 100 heads / plant of bean aphid, and then place the inoculated broad bean seedlings in a net room for rearing at a temperature of 28°C (the optional range is 25°C to 28° C.), humidity 80% (the optional range is humidity 80% to 85%), and light L:D=14:10; 5 to 7 days after inoculation, the bean aphid is covered with soy...

experiment example 1

[0046] Experimental Example 1: The survival rate of the ten-spotted ladybug at different temperatures

[0047] Hatch and breed the eggs of the ten-spotted ladybug under different temperature conditions, measure the hatching rate of the ten-spotted ladybug eggs, and the yield of each stage of the ten-spotted ladybug, and treat 100 eggs for each temperature condition, and the results As shown in table 2.

[0048] Table 2 The survival rate of the ten-spotted ladybug at different temperatures

[0049]

[0050] Note: The larvae yield rate is that of the 4th instar larvae.

[0051] Experimental data show that the interspecific suicide phenomenon in the larval stage is relatively serious, mainly manifested in the phenomenon of intraspecific killing and feeding in a small number of larvae just before the eggs hatch and before the larvae disperse and climb, and then the third and fourth instar stages Because of reasonable cage separation and supplementary aphids, the phenomenon of...

experiment example 2

[0052] Experimental Example 2: Multiplication of different aphid species

[0053] Select different aphid species to inoculate on different plants. The inoculation amount of aphids is 100 heads / plant. %~85%), under the condition of light being L:D=14:10, the aphids are propagated, the plant emergence time, the plant inoculation time and the number of aphids after 7 days are measured, each experiment is repeated 10 times, and the average values, and the results are shown in Table 3.

[0054] Table 3 Population expansion of different aphid species

[0055] Inoculate aphids Inoculate plants Emergence time / d Inoculation time / d Number of aphids / head after inoculation 7 days cabbage aphid Piaoerbai 5 26 316 Aphids tobacco 4 34 524 bean aphid Pea sprouts 3.5 7 1160

[0056] The experimental results show that in the process of aphid multiplication, the aphid population can be multiplied under any combination of humidity ranging from ...

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Abstract

The invention relates to the field of plant protection natural enemy insect breeding, and discloses a breeding method of harmonia axyridis, which comprises the stages of plant seedling preparation, aphid propagation, harmonia axyridis breeding and the like, the scheme adopts two modes of aphid independent propagation and aphid-harmonia axyridis coexistence propagation to propagate aphids, and food supply of harmonia axyridis in different growth stages is fully met; meanwhile, the mode of segmented feeding in different growth periods is adopted, and the growth habit and the growth period of the harmonia axyridis can be conveniently and accurately monitored. By adopting the scheme to breed the harmonia axyridis, the growth cycle of the harmonia axyridis can be effectively shortened, the method has the advantages of being simple in breeding method, mild in breeding condition, simple in breeding equipment, suitable for industrialized large-scale breeding and the like, the survival rate of the harmonia axyridis is high, and the method is suitable for large-scale breeding of the harmonia axyridis in various regions for biological control of aphids.

Description

technical field [0001] The invention relates to the field of plant protection natural enemy insect breeding, in particular to a method for raising the ten-spotted ladybug. Background technique [0002] Aphids, also known as greasy insects and honey insects, are a class of extremely destructive herbivorous insects. About 250 of them are serious pests for agriculture, forestry and horticulture. Due to the advantages of high efficiency, the method of releasing natural enemies is often used to prevent and control the damage of aphids in the field. Among them, the ten-spotted ladybug (Anisolemnia dilatata) is a predatory natural enemy insect of the family Coleoptera. Compared with other predatory natural enemy populations, the ten-spotted ladybug has a large body, a high predation amount, and a wide range of predation. Advantages, the specific predation objects of the ten-spotted ladybug include sorghum aphid, soybean aphid, wheat aphid, millet aphid, aphid on mugwort and bitter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K67/033
CPCA01K67/033
Inventor 郭萧高冬梅皇甫佳一李萍唐宁董毛村
Owner CHONGQING ACAD OF AGRI SCI
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