Method for breeding aphidius gifuensis ashmead through floating tobacco seedlings

Abstract

The invention discloses a method for breeding aphidius gifuensis ashmead through floating tobacco seedlings, particularly relates to a method for breeding aphidius gifuensis ashmead through floating tobacco seedlings, which is realized through breeding aphids by cultivating uniform, robust tobacco seedling with proper density and inoculating mummified aphids under net covering condition, and belongs to the technical field of insect breeding and biological control of injurious insects. According to the technical system for breeding aphidius gifuensis ashmead efficiently through floating tobacco seedlings, innovation is achieved in the three aphidius gifuensis ashmead breeding steps including host plant cultivation, host myzus persicae breeding and aphidius gifuensis ashmead breeding, the aphidius gifuensis ashmead breeding cycle is shortened to be two months, and the number of mummified aphids and parasitic aphids existing in each square meter can reach over one hundred and twenty thousand; the steps such as tobacco plant transplantation and cultivation are omitted, management is easy and convenient, and a small number of manpower and material resources are needed. By the adoption of the method for breeding aphidius gifuensis ashmead through floating tobacco seedlings, the aphidius gifuensis ashmead can be bred by fully utilizing existing breeding facilities, aphidius gifuensis ashmead breeding facility investment is reduced, and aphidius gifuensis ashmead breeding cost is reduced. The method is tested in large-scale aphidius gifuensis ashmead breeding work, the time efficiency, the unit-area efficiency, the management efficiency, the aphidius gifuensis ashmead breeding facility utilization rate and other aspects of large-scale aphidius gifuensis ashmead breeding are improved comprehensively, the aphidius gifuensis ashmead breeding cost is reduced greatly, and the method for breeding aphidius gifuensis ashmead is adopted by most tobacco enterprises in China.

Description

technical field [0001] The present invention relates to a method for propagating aphids from floating tobacco seedlings, in particular to cultivating tidy and robust tobacco seedlings with suitable density for propagating aphids, picking up stiff aphid seedlings in a timely manner, and breeding bees from floating tobacco seedlings under the condition of covering nets, which belongs to insect breeding and the technical field of pest biological control. Background technique [0002] The Chinese patent (application number or patent number: 201110209370.2) of the invention title "Method for Propagating Aphids persicae with Floating Seedlings Efficiently Propagated by Floating Seedlings" that the applicant has declared discloses the use of seedling-growing sheds, field seedling-growing sheds and In the nursery pool, 162-hole or 200-hole floating trays are used for interlaced sowing and floating seedling raising; when the tobacco seedlings have 3 to 4 true leaves, aphids are picke...

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Problems solved by technology

[0003] However, after 3 years of practical promotion and application, the applicant found that: in the original patent application, the tobacco seedlings with 3 to 4 leaves and 1 core were used to connect aphids and propagate aphids. Poor growth of seedlings causes a large number of parasitic aphids to escape or die, and the amount of stiff aphids formed is relatively small; the timing of inoculation of bees in the original patent application is to insert adult bees when the amount of aphids reaches 300-350 heads / plant, and the existing problems are In the actual production of large-scale bee breeding, because the adult bees are easy to be damaged and die when collecting the adult bees, the effective rate of the grafted adult bees is low. few

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