The reporter learned from the Department of Agriculture and Rural Affairs of Guangdong Province that on June 9, the sugarcane detection and reporting point of Lan Nuo Town, Nansha District, Guangzhou City, was tempted to detect suspected adult grassland night moth adults, and a number of experts identified them according to the adult insects they were lured and the larvae and sugarcane found in the field. The sugarcane planting area in Guangdong Province is about 2 million mu, and if the grassland night moth is damaged in a large area on the sugarcane, it may seriously affect the sugarcane yield.
This is not the first time that Guangdong has found the grassland nightcrawler on sugar cane. According to data from the Department of Agriculture and Rural Affairs of Guangdong Province, on June 4, Wengyuan County, Shaoguan City, was the first to find the grassland night moth on sugarcane, with an area of 190 mu and a maximum number of 21 insects.
According to reports, the occurrence area of grassland night moth found at the monitoring and reporting points in Nansha District is small, only sporadic, and the rate of sugarcane damage is less than 1%. Grassland nocturnal moth larvae are infested with leaves and heart leaves on sugarcane, and after peeling off the sugarcane growth point and curling the heart leaves, a large amount of insect feces and larvae hidden in them can be found. At present, the growth height of sugarcane in Nansha District is 50 cm, which is still in the seedling stage, and after being damaged by the grassland night moth as a growth point, the sugarcane stops growing and loses its economic value. The sugarcane planting area in Guangdong Province is about 2 million mu, and if the grassland night moth is damaged in a large area on the sugarcane, it may seriously affect the sugarcane yield.
Since the discovery of the grassland moth invading the corn in Zengcheng District, Guangzhou On April 23, the scope of this "moth" in Guangdong has been expanding. As of last week, a total of 20 prefecture-level cities and 81 counties (cities, districts) in Guangdong Province were found to be harmed, and the area of occurrence has reached more than 46,000 mu.
On May 24, the Ministry of Agriculture and Rural Affairs held a video conference on the prevention and control of grassland moths, pointing out that the rate of prevention and control of grassland moths should reach more than 90%, and the damage loss should be controlled within 5%, so as to ensure that large areas are plagued by contiguous areas.
At present, the agricultural sector in Guangdong has issued extensive monitoring and early warning. Key monitoring points have been set up in the planting areas where grassland moths are high-risk crops such as corn, sugarcane, rice and potatoes, and black light lamps, high-altitude monitoring lamps, and sex pheromones have been used to monitor the number and dynamics of adult grassland moths. The combination of field census and systematic survey can be used in the occurrence area to accurately grasp the number, degree of harm and dynamics of grass moth eggs, larvae, pupae, and timely release early warning information, so as to achieve early detection, early reporting and early warning.
In order to do a good job in prevention and control and response work, and strive to achieve "insect mouth grain grab", on June 5, the Ministry of Agriculture and Rural Affairs and the Ministry of Finance urgently arranged 500 million yuan of central financial agricultural production disaster relief funds to support the insect outbreak area and the migration transition area to carry out unified prevention and control of grassland night moth insect pests, joint prevention and control, and emergency prevention and control, resolutely curb its outbreak into disaster, win the battle of "insect mouth grabbing grain", and effectively ensure the stability of grain production throughout the year.
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