Trichogramma japonicun ashmead artifical breeding production method

Abstract

The invention provides a method for breeding trichogramma japonicun ashmead by means of beet armyworm ovums. The method is relatively high in production efficiency and short in breeding period, and is beneficial to scale production of trichogramma japonicun ashmead. The method comprises following steps of 1) producing beet armyworm ova; and 2) breeding trichogramma japonicun ashmead by means of the beet armyworm ova. The trichogramma japonicun ashmea bred artificially are used for controlling agricultural pests which mainly comprise rice-stem borer, yellow rice borer and rice leaf roller. Compared with the prior art, the trichogramma japonicun ashmead artifical breeding production method is advantaged in that beet armyworm can be obtained easily, and can be bred simply; and the method is relatively high in production efficiency and short in breeding period, and is convenient for large-scale breeding, and is beneficial to scale production of trichogramma japonicun ashmead.

Description

technical field [0001] The invention belongs to the technical field of biological control of agricultural pests, and relates to a breeding and production method for Trichogramma, in particular to an artificial breeding and production method for Trichogramma rice borer. Background technique [0002] Trichogramma is the most researched and most widely used insect in biological pest control in the world. At least 12 species have been artificially propagated in large numbers to control some important agricultural and forestry pests. The mass breeding of Trichogramma population is mainly carried out by using intermediate host eggs, and the intermediate host eggs of Trichogramma are relatively successfully utilized are tussah silkworm eggs, castor silkworm eggs, wheat moth eggs and rice moth eggs. Large eggs (tussah silkworm eggs, castor silkworm eggs) are easy to obtain and relatively low in cost, so large-egg bees bred with tussah silkworm eggs such as Trichogramma pine caterpil...

AI Technical Summary

Problems solved by technology

[0003] Trichogramma rice borer is an important parasitic natural enemy of rice pests such as rice stem borer, rice stem borer and rice leaf roller. The host range of rice borer Trichogramma is relatively narrow. It is still difficult to raise these primary hosts in large quantities. Usually, the eggs of rice moths are used as substitute hosts to breed Trichogramma oryzae. Trichogramma rice borer has been known for many years, but it is difficult to form large-scale and commercialized, which limits the production of organic rice

Trichogramma rice borer can parasitize the eggs of corn borer and armyworm, but the eggs of these two insects are in the form of lumps, which are not easy to remove from the egg-laying utensils to make egg cards, which limits the application; the life cycle of diamondback moth is short, and the reproduction Ligao can quickly expand the population in a short period of time and obtain a large number of eggs, but the eggs are small, resulting in a decline in the quality of the bred Trichogramma rice borer. Similarly, diamondback moth eggs are not easy to make egg cards and form standardization; Spodoptera litura The amount of eggs laid is large, and it is easy to make a standard egg card, but the Trichogramma rice borer cannot complete the development after being parasitized

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