Method for producing natural enemy insect host eggs through tussah pupas

Abstract

The invention discloses a method for producing natural enemy insect host eggs through tussah pupas. The method breaks through the technical problem about moth appearance of the tussah pupas, the problem that the eclosion rate is reduced is solved through appropriate temperature and humidity conditions, and the problem about wing spreading of tussah moths is solved by designing a development frame, a development disk and a wing spreading net. The method can deal with the problem that because of shortage of tussah silkworm cocoons, material price rises, manual input can also be substantially reduced, labor intensity can be relieved, and therefore production cost is reduced, production efficiency is improved, and the method has great significance in the aspect that trichogramma, anastasius japonicus ashmead and other natural enemy insects are bred through tussah eggs.

Description

Technical field: [0001] The invention discloses a method for producing natural enemy insect host eggs by using tussah silkworm chrysalis, in particular to a method for producing parasitic natural enemy insect host eggs such as Trichogramma and flat-bellied wasp by using tussah silkworm chrysalis instead of tussah cocoon, belonging to the field of agricultural technology biological pest control technology. Background technique: [0002] Since Lin Lianxin and Feng Jianguo successfully used tussah silkworm eggs to breed Trichogramma pine caterpillar for the first time, tussah silkworm eggs have been widely used in biological control and become an important raw material for breeding Trichogramma pine caterpillar. Tussah eggs are large, have high bee reproduction efficiency, and are rich in resources. The use of tussah eggs to breed Trichogramma, flat-bellied wasps and other natural enemy insects has a significant effect on the control of agricultural and forestry pests. [00...

AI Technical Summary

Problems solved by technology

In the early morning of the next day, all the eclosion female tussah moths on the cocoons were manually removed one by one. During the moth picking process, the tussah moth scales flew in the air, often causing breathing difficulties and allergies; the excrement of the moths spread everywhere, irritating The strong smell (mainly the smell of ammonia) is pungent, so the labor intensity of this production link is very high, the conditions are very difficult, and there is often a shortage of people, which causes great difficulties in production

At the same time, some unemerged tussah cocoons will fall off from the cocoon string, and the moths need to be strung out again, resulting in artificial waste

In addition, the percentage of female cocoons of tussah cocoons harvested naturally is between 30% and 40%, which is difficult to meet the needs of cocoons for production. This requires a large number of skilled workers to manually select through subtle differences in appearance to meet the biological cocoon standard

Due to the limitation of cocoon shell encirclement and the technical level of cocoon selection workers, the female cocoon rate is often not up to the standard, and it is impossible to completely remove dead, injured, sick, and inferior pupae. The quality and efficiency of the numerous bees

Moreover, the utilization rate of harvested tussah cocoons can only reach about 30%, that is, about 3,000 catties of biological cocoons can be selected from 10,000 catties of cocoons, and the price is much higher than the average market price, which virtually increases production costs.

[0004] At present, there are certain technical difficulties in using tussah silkworm chrysalis to produce natural enemy insect host eggs. Wing spread, resulting in reduced egg production