Meadow nocturnal moth
This is a significant danger native to the Americas
It has spread across the ocean to Hainan
It endangers food crops such as corn and rice in Hainan
At present, 18 cities and counties in the province have been affected by crops
Reassuringly
Hainan's agriculture and scientific research departments have joined forces
Amplify the tricks for pest control
How to carry out the prevention and control of the grassland moth in Hainan? On May 17, plant protection experts from the Ministry of Agriculture and Rural Affairs, the Chinese Academy of Agricultural Sciences, the Chinese Academy of Sciences, the Provincial Department of Agriculture and Rural Affairs, the Chinese Academy of Tropical Agricultural Sciences, the Provincial Academy of Agricultural Sciences, Hainan University, and Guangdong and Guangxi Zhuang Autonomous Regions came to Haikou to provide suggestions for the next step of effective control of the Hainan grassland night moth.
The grass moth larvae, see the daily girl goosebumps are up
The grassland moth is harmful
How harmful is the grass moth?
Jin Tao, director of the Biological Invasion Research Office of the Institute of Environment and Plant Protection of the Chinese Academy of Tropical Agricultural Sciences, introduced that the biggest harm of the grassland night moth is that it is too edible, young larvae are often hidden on the back of the leaves to "steal food", and the harm of old mature larvae to corn is very serious, they can not only eat the male ears and fruit ears of corn, but also eat the leaves of the whole corn plant, resulting in crop yield reduction.
"In addition to eating corn the most, the grassland moth also eats more than 80 kinds of crops such as rice, cotton, sorghum, peanuts, etc., and the basic rations that love to eat are our rations." Jin Tao said that the grassland night moth has strong migration ability, strong invasion ability, large reproduction, wide range of hosts, and strong gluttony, and we have found this pest in 18 cities and counties in Hainan.
Jin Tao also said that the high temperature and high humidity of Hainan provide conditions for rapid reproduction of grassland moths, which will also endanger the breeding of corn, rice, cotton and other crops in the Nanfan area of our province, and endanger the biosecurity of Nanfan.
Since this period of time, plant protection experts have actively carried out joint control work, and have successively gone to Haikou, Sanya, Danzhou, Lingshui, Chengmai, Dongfang and other places to investigate and control, understand the use of chemical pesticides and control methods in our province, and train on the identification and prevention and control technology of grassland moth. In addition, plant protection experts from the Chinese Academy of Tropical Agricultural Sciences have also hatched adult and larvae of the grassland nightcrawler, and are currently conducting green prevention and control experiments such as parasitic bees and biological agents to select suitable methods for the green prevention and control of the grassland nightcrawler in Hainan.
At the seminar, the participating experts unanimously suggested that Hainan should coordinate the plant protection forces of the whole province, strengthen the training of farmers and relevant technical personnel in identification and prevention and control technologies, find out the occurrence area and degree of harm of the grassland moth, do a good job in monitoring and early warning of pests on the whole island, especially in the Southern Fan area, understand the situation of pests moving in and out of Hainan, strengthen the research on the biology, ecology and toxicology of pests, carry out research on green prevention and control technologies, and ensure the national biosecurity of nanfan.
Prediction of the adaptive distribution of the grassland nocturnal moth in China. The pictures are all provided by the Institute of Ring Plantation of the Academy of Thermal Sciences
The National Agricultural Technology Extension Service Center of the Ministry of Agriculture and Rural Affairs released the relevant information of the pest on the "Plant Disease and Insect Intelligence", the grassland night moth has spread rapidly in Africa and Asia since 2016, and has invaded 44 African countries in sub-Saharan Africa and India, Myanmar, Sri Lanka, Bangladesh and other countries, and invaded Yunnan in January this year, colonizing and breeding in southwest China and other places and spreading continuously, and now the pest has spread to Guangxi, Guangdong, Guizhou, Hunan, Hainan and other provinces and municipalities. The area of crops endangered is nearly 1.1 million mu.
Block the meadow moth
Hainan's agricultural and scientific research departments frequently amplify their moves
Since the Institute of Environment and Plant Protection of the Chinese Academy of Tropical Agricultural Sciences and the Hainan Provincial Plant Protection Station carried out monitoring in Hainan on April 28, the harm of the grassland moth has been found in 18 cities and counties in Hainan Province, and measures such as light trapping, chemical control, and green prevention and control have been taken in a timely manner to form an ecological interception belt to carry out the killing work.
Experts from the Institute of Environmental Implantation of the Academy of Thermal Sciences have gone deep into the fields to carry out the work of killing and guiding.
In April, the agricultural department of Hainan Province judged that the grassland moth has a strong ability to migrate, and Guangxi, Guangdong and Hainan are across the sea, and the possibility of moving into Hainan is extremely high. To this end, the Institute of Environmental Plantation of the Academy of Thermal Sciences organized relevant scientific and technological personnel to carry out fixed-point monitoring and field investigation around the island. As of April 28, no suspected insectoids had been found at the four fixed monitoring points of the high-altitude insect traps in Sanya, Haikou, Lingshui and Danzhou, and the grassland moth traps installed in Sanya, Lingshui and Danzhou had not been found.
On April 30, farmers reported that meat worms harmed corn. The Department of Agriculture and Rural Affairs of Hainan Province quickly organized experts from the Institute of Environmental Plantation of the Academy of Thermal Sciences, Hainan University, and the Hainan Academy of Agricultural Sciences to go to the insect-infested corn field in Shiyan Village, Shishan Town, Xiuying District, Haikou City, and the scene was confirmed to be a grassland moth, with a harmful area of 5 acres, and the insect state had larvae and adults, mainly larvae.
On May 5, the maize field of Mei'an Town, Haikou City, where the Institute of Thermal Sciences is located, was once again found to harm the grassland night moth, mainly harming the ears and new leaf parts of mature corn, with an area of about 8 acres, and the insect state has larvae and adults, mainly larvae.
On May 9, the Institute of Environmental Plantation of the Academy of Thermal Sciences sent personnel to the vegetable planting ground near Chengmai Meiling Farm, and found that the grassland moth, with a density of about 400 insect populations, mainly endangers sweet corn varieties, and has been chemically controlled.
Experts from the Institute of Environmental Phylogology of the Chinese Academy of Thermal Sciences, Hainan University, and the Institute of Plant Protection of the Hainan Academy of Agricultural Sciences introduced that the prevention and control of grassland moths requires ecological regulation, protection and utilization of natural enemies, and chemical control. Areas with conditions can be intercropped with non-grass crops to protect the parasitic and predatory natural enemies of the grassland moth in the natural environment of farmland, give play to the natural control advantages of biodiversity, and form ecological interception zones.
Experts from the Institute of Environmental Physiology of the Academy of Thermal Sciences used high-altitude insect traps at the site of insect traps in Sanya on April 28.
Experts suggest
In the adult stage of grassland moth, the insecticidal lamp can be used to trap and kill continuously, and the control effect can be improved with sexual attractants and food attractants. Control of grassland nocturnal moth, young larval stage is the best time, the best time to choose early morning or evening, pay attention to spraying on the corn heart leaves, male ears and female ears and other parts.
The killing equipment placed in the field by the Ring Plantation Institute of the Institute of Thermal Sciences. The above pictures are provided by the Institute of Ring Plantation of the Academy of Thermal Sciences
At present, the Institute of Environmental Plantation of the Academy of Thermal Sciences has sent a technical team to Datian Town, Dongfang City, to conduct training on the identification and prevention and control of grassland moths for members of the rural revitalization task force of 24 village committees, and to explain in detail the prevention and control agents and control methods. At the same time, the scientific and technological personnel of the institute collected samples of adult and larvae of the grassland nightcrawler and reared them in the laboratory, and carried out green prevention and control experiments such as parasitic bees and biological agents, which was a suitable way for the green prevention and control of the grassland nightcrawler in Hainan Province.
Source: Hainan Daily Client Nanhai Net
Reporter: Wang Yujie, Kang Jinglin, correspondent Lin Hongsheng
Editor 丨 Zhang Yuntong