A method for controlling broccoli pests in the area to be controlled by using the seven-spot ladybug carrier plant system
A carrier plant system, the technology of seven-star ladybug, which is applied in the fields of botany equipment and methods, plant protection, leguminous plant cultivation, etc., can solve the problems that parasitic natural enemies are small, have not been widely promoted, and remain in the experimental stage. , to achieve the effect of reducing the waste of prevention and control costs, significant ecological benefits, and less manual management
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Embodiment 1、 7
[0046] Embodiment 1, seven-spot ladybug carrier plant system construction
[0047]In the greenhouse (temperature 25±1°C, humidity 65±5%, photoperiod 16L:8D, light intensity 1100lux), use the orthogonal test method to construct the seven-star ladybug carrier plant system in a plastic pot (recommended 17cm×30cm) After sowing 15-20 broad beans in the middle, conduct the test after the second day of emergence, set 4 factors and 3 levels, and clarify the key parameters: introduced ladybug density (A), inoculated aphid density (B), introduced ladybug time (C), 3 levels of time (D) for changing host plants (Table 1). A total of 9 experimental treatments (Table 2), each with 3 replicates.
[0048] Table 1 L9 (3 4 ) Orthogonal test factor level table
[0049]
[0050] Table 2 Orthogonal experiment design scheme of the seven-spot ladybug-Prunus pea-viba bean seedling carrier plant system
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[0052] Note: The time of introducing ladybugs was calculated by taking the day ...
Embodiment 2
[0061] Embodiment 2, application of seven-spot ladybug carrier plant system to control peach aphid effect evaluation and cost accounting
[0062] 1. The seven-spot ladybug carrier plant system controls peach aphid
[0063] Determination of the ability of the seven-spot ladybug carrier plant system to control green peach aphid in a greenhouse enclosure: set 100 mesh / cm in the greenhouse 2 There are 9 gauze covers, the cover specifications are 50cm×50cm×100cm, the cover frame material is aluminum alloy, and 6 pots of broccoli (such as image 3 ), when broccoli grows 7-8 leaves, insert 200 green peach aphids (simulated monitoring of pest populations (that is, the number of pests is greater than 10 heads / 1 square meter).
[0064] Carrier plant system treatment group: put the seven-star ladybug carrier plant system (the best combination of adult net gain) in the middle of the broccoli, specifically as follows: place the broad bean seedlings that have emerged for 2 days (central po...
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