Method for breeding aphidius gifuensis within short cycle

Abstract

The invention discloses a method for breeding aphidius gifuensis within a short cycle. The method comprises the steps of: host plant cultivation, pest species breeding, and aphidius gifuensis large-scale breeding. A breeding cycle of the whole process is 29-40 days. Each dish of brassica chinensis can breed more than 12000 of aphidius gifuensis, a parasitism rate of the aphidius gifuensis is 95%, a formation rate of stiff aphids is 60%, and stiff aphids of the aphidius gifuensis in each dish can be used for controlling 10-15 mu of aphid-damaged farmland. Brassica chinensis of a vegetable variety is adopted as a host plant with high strong adaptability and fast growth; and the brassica chinensis a host plant variety with a shortest cultivation cycle in current breeding technology of sphidius gifuensis, thereby reducing a breeding cycle of the aphidius gifuensis, and improving breeding efficiency of the aphidius gifuensis. The method adopts a flotation breeding method for cultivating the host plant, is simple in process step and solves the problems such as high breeding energy consumption, a tedious technical process, poor activity of the aphidius gifuensis, and irregular formation of the stiff aphids of the aphidius gifuensis, and can increases a utilization rate of the aphidius gifuensis for wide application in agriculture and forestry industry, thereby enabling the aphidius gifuensis to have better feasibility of production, promotion, and application.

Description

technical field

[0001] The invention belongs to the technical field of biological control of agricultural and forestry pests, and in particular relates to a short-cycle breeding method for Aphids aphids. Background technique

[0002] Aphids are one of the main pests in the production of agricultural and forestry crops. The harm of aphids is particularly serious in the production of tobacco leaves. Adults and nymphs mainly suck the juice of tobacco leaves on the back and tender stems of tobacco leaves, resulting in short growth of tobacco plants and unbalanced nutrition, which affects tobacco production. The normal growth and development of tobacco plants, the honeydew secreted by aphids can easily induce the occurrence of soot disease and other diseases, and at the same time, aphids also spread a variety of tobacco virus diseases, causing the prevalence of tobacco virus diseases; there are mainly chemical control and physical control for aphids, chemical control Relying on p...

Examples

Embodiment 1

[0019] Example 1: A short-cycle breeding method for Aphids persicae. The host plant used in the method is the vegetable variety Shanghai Qing, and the floating seedling method is used to cultivate the host plant. The specific breeding steps are as follows:

[0020] (1) Host plant cultivation

[0021] Select the vegetable variety Shanghaiqing, which grows fast and has strong disease resistance and strong disease resistance, as the host plant for the breeding of Aphis persicae;

[0022] Prepare the floating seedling pond, add the aqueous solution of common compound fertilizer in the seedling pond, keep the depth of the aqueous solution in the seedling pond to be 5cm, and control the total N concentration of the aqueous solution in the seedling pond to be 150ppm;

[0023] Prepare 60 special seedling trays for floating seedling cultivation. The specifications of the seedling trays are 60 centimeters long, 34 centimeters wide, and 5 centimeters high. Each seedling tray is provided...

Embodiment 2

[0031] Example 2: A short-cycle breeding method for Aphids persicae. The host plant used in the method is the vegetable variety Shanghai Qing, and the floating seedling method is used to cultivate the host plant. The specific breeding steps are as follows:

[0032] (1) Host plant cultivation

[0033] Select the vegetable variety Shanghaiqing, which grows fast and has strong disease resistance and strong disease resistance, as the host plant for the breeding of Aphis persicae;

[0034] Prepare the floating nursery pond, add the aqueous solution of common compound fertilizer in the nursery pond, keep the depth of the aqueous solution in the nursery pond to be 10cm, and control the total N concentration of the aqueous solution in the nursery pond to be 250ppm;

[0035] Prepare 500 special seedling trays for floating seedlings. The specifications of the seedling trays are 60 cm long, 34 cm wide, and 5 cm high. Each seedling tray is provided with 80 cultivation holes, and the see...

technical field

[0001] The invention belongs to the technical field of biological control of agricultural and forestry pests, and in particular relates to a short-cycle breeding method for Aphids aphids. Background technique

[0002] Aphids are one of the main pests in the production of agricultural and forestry crops. The harm of aphids is particularly serious in the production of tobacco leaves. Adults and nymphs mainly suck the juice of tobacco leaves on the back and tender stems of tobacco leaves, resulting in short growth of tobacco plants and unbalanced nutrition, which affects tobacco production. The normal growth and development of tobacco plants, the honeydew secreted by aphids can easily induce the occurrence of soot disease and other diseases, and at the same time, aphids also spread a variety of tobacco virus diseases, causing the prevalence of tobacco virus diseases; there are mainly chemical control and physical control for aphids, chemical control Relying on p...

Examples

Embodiment 1

[0019] Example 1: A short-cycle breeding method for Aphids persicae. The host plant used in the method is the vegetable variety Shanghai Qing, and the floating seedling method is used to cultivate the host plant. The specific breeding steps are as follows:

[0020] (1) Host plant cultivation

[0021] Select the vegetable variety Shanghaiqing, which grows fast and has strong disease resistance and strong disease resistance, as the host plant for the breeding of Aphis persicae;

[0022] Prepare the floating seedling pond, add the aqueous solution of common compound fertilizer in the seedling pond, keep the depth of the aqueous solution in the seedling pond to be 5cm, and control the total N concentration of the aqueous solution in the seedling pond to be 150ppm;

[0023] Prepare 60 special seedling trays for floating seedling cultivation. The specifications of the seedling trays are 60 centimeters long, 34 centimeters wide, and 5 centimeters high. Each seedling tray is provided...

Embodiment 2

[0031] Example 2: A short-cycle breeding method for Aphids persicae. The host plant used in the method is the vegetable variety Shanghai Qing, and the floating seedling method is used to cultivate the host plant. The specific breeding steps are as follows:

[0032] (1) Host plant cultivation

[0033] Select the vegetable variety Shanghaiqing, which grows fast and has strong disease resistance and strong disease resistance, as the host plant for the breeding of Aphis persicae;

[0034] Prepare the floating nursery pond, add the aqueous solution of common compound fertilizer in the nursery pond, keep the depth of the aqueous solution in the nursery pond to be 10cm, and control the total N concentration of the aqueous solution in the nursery pond to be 250ppm;

[0035] Prepare 500 special seedling trays for floating seedlings. The specifications of the seedling trays are 60 cm long, 34 cm wide, and 5 cm high. Each seedling tray is provided with 80 cultivation holes, and the see...