What is the Bean Bug
In the process of garden maintenance, the bean bug often causes plant crises with its惊人 appetite. This biological species, scientifically known as the soybean pod borer larva, not only affects the growth of crops but also poses a threat to urban greening. This article will delve into the ecological characteristics of the bean bug, reveal its harm spectrum, and provide a systematic control plan.
Analysis of Bean Bug's Biological Characteristics
Morphological Features and Growth Cycle
The bean bug can reach a body length of 90mm, with a yellow-green epidermis that serves as a protective coloration. The prominent head and abdominal feet structure give it super攀附 ability. The peak outbreak period is from late July to mid-August every year, overlapping with the rainy season. The single oviposition can reach 200-300 eggs.
Bean Bug's Harm to Plants Spectrum
Main Host Plants
1. Leguminous crops: Leaves of economic crops such as soybeans and mung beans are often eaten into a net-like shape. 2. Landscape trees: The new shoots of street trees such as locust and acacia are affected by more than 60%. 3. Hedge plants: The tender buds of vines like wisteria are easily attacked by groups.
Regional Distribution Characteristics
In the heavily hit areas of the Yellow and Huai River Basins, there are 3-4 generations per year. In the Yangtze River Basin, the suitable temperature and humidity extend the duration of the pest. In the South China region, larvae can still be seen active in winter.
Comprehensive Control System for Bean Bugs
Ecological Control Techniques
1. Deep soil tillage to destroy pupae: Deep tillage of 30cm in winter to destroy the overwintering environment.2. Interplanting with repelling plants: Interplanting aromatic plants such as mint and rosemary.3. Physical trapping devices: Set up 15-20 black lights per hectare.
Precise Medication Plan
It is recommended to use 10% chlorantraniliprole suspension (20ml per mu) or 5% emamectin benzoate microemulsion (30ml per mu). The medication time should be during the active period of adults, from 18:00 to 20:00 in the evening, and combined with silicone adjuvants to enhance the spreading ability of the pesticide solution.
By establishing a three-level defense system of monitoring and early warning, ecological regulation, and precise medication, the harm rate of bean bugs can be controlled below 5%. Regularly conducting health checks on garden plants, combining biological and chemical control, can effectively maintain ecological balance and ensure the integrity of green landscapes.