Method for controlling greenhouse vegetable aphids through adoption of harmonia axyridis

Abstract

The invention discloses a method for controlling greenhouse vegetable aphids through the adoption of harmonia axyridis. A plastic flower pot, a cultivation medium, tobacco seedlings and an insect proof net are selected to form an integrated device, so that the expanding propagation and recycling of harmonia axyridis are realized, and the control of greenhouse vegetable aphids is realized by adopting the harmonia axyridis. According to the method, a harmonia axyridis population with a big enough group size, suitable for production, is established by performing expanding propagation on a small group of harmonia axyridis, and after being released, harmonia axyridis in the harmonia axyridis population has strong adaptive capacity to field conditions, and are high in predation rate to aphids, so that the population density of aphids is effectively reduced, and the control efficiency can reach 85% or above.

Description

technical field [0001] The invention relates to a method for preventing and controlling vegetable aphids by heteromorphic ladybugs, in particular to a method for multiplying and recovering heteromorphic ladybugs and preventing and controlling vegetable aphids, and belongs to the technical field of vegetable biological control. Background technique [0002] Harmonia axyridis Pallas is an insect belonging to the class Insecta, order Coleoptera, and family Ladybug. Hemichromia has a hemispherical body, the back of the head is covered by the pronotum, and there are teeth at the base of the upper jaw. It is a kind of natural enemy insect with broad development and utilization prospects due to its biological characteristics such as wide distribution, large predation amount, and strong fecundity. [0003] At present, the biocontrol technology using natural enemy insects to control pests has become a powerful measure to ensure the development of green agriculture in my country. The...

AI Technical Summary

Problems solved by technology

[0004] At present, there are still many deficiencies and defects in the application of commercial alien ladybugs in the cultivation of vegetables in solar greenhouses, mainly as follows: (1) The insecticidal speed is slow, and it is difficult to quickly suppress the insect population

The adult beetle is highly dispersible, and it is difficult to establish a large enough population in the solar greenhouse after the release of commercial ladybug products, which affects the control effect on aphids; (2) Large dosage and high cost

In order to achieve the ideal control effect, it is necessary to release a large group of commercial alien ladybug products, resulting in high control costs, vegetable farmers are unwilling to accept it, and it is difficult to promote in production; (3) it is difficult to recycle the alien ladybug after release

The use of commercial alien ladybugs to control vegetable pests has not yet achieved the recovery and recycling of alien ladybugs

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