Method for indoor quick amplification propagation of cruciferous vegetable lepidoptera pest parasitic wasps

Abstract

The invention relates to a method for indoor quick amplification propagation of cruciferous vegetable lepidoptera pest parasitic wasps. The method includes the following steps: (1) acquiring parasiticwasp cocoons from a field; (2) performing verification on parasitic wasps for use after the parasitic wasps are hatched out from the acquired parasitic wasp cocoons; (3) planting radish seedlings inplanting pots in the condition of plant growth light sources; (4) performing indoor propagation on Plutella xylostella by using a suspension method; (5) allowing the acquired parasitic wasps from thestep (2) to perform mating; (6) selecting and putting the 2th-3th-age-group Plutella xylostella acquired from the step (4) in parasitic cups, and leading the parasitic wasps acquired from the step (5)to the parasitic cups to perform parasitism; (7) collecting parasitic wasp cocoons acquired from the parasitic cups, and cleaning the parasitic cups; and (8) repeating the above steps (2)-(7), and performing successive propagation on the Plutella xylostella and the parasitic wasps. The method is easy to operate, is efficient and convenient, is low in cost, can achieve indoor quick amplification propagation of the cruciferous vegetable lepidoptera pest parasitic wasps, and has a wide application prospect.

Description

technical field [0001] The invention relates to a method for quickly multiplying parasitic wasps of Lepidoptera pests in cruciferous vegetables indoors. Background technique [0002] Plutella xylostella is an important pest of cruciferous vegetables, which occurs in all provinces of my country, especially in the Yangtze River Basin and southeast coastal areas. Plutella xylostella is an oligophagous pest, which mainly harms cruciferous vegetables such as cabbage, mustard greens, cabbage, cauliflower, and Chinese cabbage. In recent years, the planting area of ​​cruciferous vegetable crops has been increasing globally. As early as 2009, the planting area reached 3.4 million hectares. However, as the acreage of cruciferous vegetables increases, the damage of diamondback moth is also more serious, and the global damage caused by it has reached 4-5 billion US dollars per year. Farmers in my country and other developing countries overuse chemical pesticides to control diamondback...

AI Technical Summary

Problems solved by technology

The existing reproduction technology of Plutella xylostella is to use the host plant that grows to 5-8 true leaves to raise Plutella xylostella after screening the Plutella xylostella collected in the field. The planting of the host plant takes time and occupies an area. Difficult to achieve rapid expansion of Braconis plutella xylostella

Images