At the beginning of August 2017, large-scale corn armyworm disasters occurred in various parts of the country. Shaanxi, Jilin, Inner Mongolia, Henan... The armyworms are migratory pests, which are sudden and gluttonous. The leaves are all eaten up, causing severe crop losses, and farmers are at risk of hunger. The situation is urgent, and the ultra-flying plant protection drone agents all over the place responded quickly, and the stars and nights were invested in the fight against insects and farmers!
Resilience is a passive move, and on weekdays, we can also reserve part of the knowledge, become passive and take the initiative, do a good job in prevention and control, and deal with the armyworm disaster more reasonably.
Causes and influence conditions of armyworm disaster
1. The period of occurrence. The armyworm is suitable for warm and high humidity conditions, so it broke out in the coastal monsoon region of China. It was hot and rainy from July to August, which was the time for the outbreak of the armyworm disaster. Humidity has a great influence on the survival rate of larvae. When the relative humidity is 80%, 75 and 50%, the mortality rate of first-instar larvae is 23.3%, 40% and 81%, respectively.
2. Food condition: Adults must eat a large amount of sugar in order to lay eggs normally. The armyworm larvae develop fast and insect weight when they eat grasses, and have a large amount of eggs after emergence.
3. Cultivation techniques: Adults prefer to lay eggs on wet, densely growing plots of land, and grow more luxuriant wheat, millet, paddy fields or grasses with more grass and sorghum.
4. The influence of natural enemies: There are many natural enemies of armyworms, such as frogs, ants, walking insects, spiders, grasshoppers, etc.
Regional distribution and migratory characteristics of armyworm
The annual generation of armyworms varies from region to region. Northeast and Inner Mongolia occur 2 to 3 generations per year, 3 to 4 generations in central and southern China, 4 to 5 generations in Jiangsu Huaihe River Basin, 5 to 6 generations in the Yangtze River Basin, and 6 to 8 generations in South China. At an altitude of about 1000m, the plateau occurs for 3 generations in 1 year, and the altitude is about 2000m.
The overwintering line of the armyworm is in the 33°N zone, and no insects can survive the winter in the north of 33°N. It is propagated all year round in Guangdong and southern Fujian, and there is no wintering phenomenon. A large number of adults in the north of the spring are moved from the south to the north. . In the eastern half of China, the armyworm has four large-scale migratory activities every year, with two modes of migration: spring and summer from low latitude to high latitude, or from low to high altitude, and autumn relocation. When moving from high latitude to low latitudes, or from high altitudes to low altitudes.
Myxoplasm hazard
The 1st and 2nd instar larvae of corn armyworms feed on the leaves to cause holes. The larvae of 3rd instar larvae have irregular gaps after the leaves are damaged. When they are overeating, they can eat light leaves, leaving only veins, causing severe production reduction or even rejection. It moved to another field, so it was also known as "the army worm." Generally, the terrain is low, the corn plants are uneven, and the weeds are heavily damaged.
Control method
1. Biological trapping: The biological habits of feeding animals to supplement energy before mating with eggs are used, and the bait with the odor of the adult's favorite odor is used together with a small amount of insecticide for biological trapping.
2. Physical control: The grass will attract eggs, from the time the adult worms start spawning to the end of spawning, and use the grass to insert eggs in the field. Insert 10 pieces per acre, change it for about 5 days, and destroy the grass with eggs.
3. Chemical control: All-round application in the 1-2 instar larva stage, using the P20 plant protection drone 's downwind wind field and excellent atomization effect, the insecticide can be evenly and thoroughly penetrated, which can effectively control the disaster. Spread and develop. The use of plant protection drones to kill the armyworms is most effective.
The first flight of the P20 insect disaster
Extremely flying Shaanxi agent - Green Sheng Fei
Dispatch strength: eleven operational teams, twenty-seven aircraft
Location: Shaanxi Province
Working area: 400,000 mu or more
Extreme Flying Gold Partner - Zhengbang Biochemical Northeast Flying Defense
Dispatch power: three operations teams, six aircraft
Location: Jilin Province
Working area: more than 180,000 mu
Extreme Flying Henan Company
Dispatch power: three operations teams, six aircraft
Location: Shaanxi Province
Working area: 100,000 mu or more
Extreme flying Ningxia control armyworm command
Dispatch strength: eight working teams, fifteen aircraft
Location: Inner Mongolia
Working area: more than 50,000 mu
Extreme Flying P20 Jilin Province Disaster Relief Express
After farmers in Changchun City, Jilin Province suffered from sticky insects and insect pests, they went to the northeast to fly against the Coptic Brigade. The team leader Tao Liyuan quickly transferred three operational teams and rushed to the disaster site, with a comprehensive operation of more than 5,000 acres.
On the 10th, Tao Liyuan said in the first line of the P20 application effect: "The insecticidal effect is very good, and the P20 fights the uniformity of the drug to play a big role, because the insects are inside the cornfield, where there are insects and no insects, they all look Not enough, so every place must be hit with medicine, otherwise the insects will climb away and harm other plots. In addition, the height of the corn is basically above 2 meters, and the penetrating power of the P20 is not bad. The lower pests are also killed, but if there are many insects, they must fly slowly and increase the dose."
Jilin application information: Qunhao 8% ursyl chrysanthemum 200ml + strong coupon 25% cyanohydrin * chlorpyrifos 300ml for the original amount of 15 acres of land.
Extreme Flying P20 Inner Mongolia Disaster Relief
Inner Mongolia Etuoke Banner and Etuokeqian Banner were geographically close to Ningxia. After the outbreak of the insect disaster, a distress signal was sent to the Feifei Ningxia agent. The responsible person Cai Zhiqiang quickly organized the mobile force and went to Inner Mongolia overnight.
Cai Zhiqiang said that the terrain conditions in Inner Mongolia are complex and the weather conditions are poor, which brings great challenges to the operation. However, the situation of the insects is serious. It was once on the verge of out of control. The farmers were in a hurry. Some merchants took advantage of the self-interest and took the opportunity to raise the operating price. bad influence. As the extremely flying person who is worried about the farmers and the peasant households, Cai Zhiqiang did not overcharge the farmers for a penny until the last mu of land. He said: "When we do things for the peasants, we must not rob them!"
Extreme Flying P20 Shaanxi Province Disaster Relief
Shaanxi Province is the province with the heaviest damage to the large-scale armyworm disaster. The extremely flying Shaanxi agent, Lvshengfei Defense, has a strong protective barrier for the agricultural harvest in Shaanxi with its rich experience and strong synergy.
Shi Yufeng, the person in charge of Lushengfei, said that at the beginning of the month, Lusheng cooperated with pesticide manufacturers and agricultural resource dealers to carry out pesticide spraying tests on corn worm prevention and control in Dingbian and Jingbian areas, forming a system. Application plan. When the insect disaster broke out, within 18 hours, 11 task forces and 27 aircrafts had arrived at the designated operation site to carry out operations. Green's mature multi-party cooperation network has obtained sufficient logistical support, so that it can respond quickly and control the spread of pests in a timely and effective manner.
Referring to the work efficiency of P20, Shi Yufeng is full of praise. He said: "Many local planes and agricultural investment companies have come to find me. Because the temperature in the daytime is too high, there are about six or seven hours at noon. During the period, it is impossible to apply the medicine. The P20 can work independently at night, which greatly improves the efficiency of the work. They all look at this point and will be on the plane soon."
When it comes to the disaster-resisting effect, Shi Yufeng analyzes the disasters in various parts of Shaanxi in general, and the movement of the work force is also well-known. A long-time general of the field, for the work of plant protection, Shi Yufeng said: "I am also a farmer, from the farmers. To go to the peasants and eat the food that the peasants plant, it is necessary to do practical things for the peasants."
The development of science and technology has changed the lives of peasants. At present, the P20 uses its excellent strength to save farmers from the fire. In Shaanxi, the disaster-stricken front line, the operation team and the village cadres and farmers have also communicated on the instant messaging platform. Some farmers said that they looked at the P20. Going back and forth over the cornfield, I saw confidence and hope.
The use of environmentally friendly drugs to protect the ecological balance has always been a healthy plant protection method advocated by Feifei Agriculture. At the same time, Feifei Agriculture advocates scientific treatment of corn stalks, conserving resources, protecting the environment, using land rotation methods to protect cultivated land, and also spreading the risk of pests. Feifei Agriculture is always in the heart of agriculture, and promotes the development of agriculture, rural areas and farmers!
Text: mobi
Photo: Shi Yufeng, Tao Liyuan, Shang Jiang, Yi Lei
Editor: Margaret
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