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at 60 degrees Celsius.
The above can kill insects. Oxygen is less than 8%, which inhibits the growth of pests.
Freezing or drying at high temperatures can kill insects, but too low or too high temperature affects the activity of corn. Low temperatures below 10 degrees Celsius can suppress pests.
Through a tight seal, oxygen can be insulated and aluminum phosphide can be assisted.
Fumigation can kill insects.
Corn insecticide, more than 90% is aluminum phosphide, about 10% is insect-proof phosphorus mixed to control pests, other drugs are toxic, high residue or efficacy.
Extended information: 1. If the corn has worms, the following methods can be used to control pests.
1. Lower temperature, quasi-low temperature of 20 degrees Celsius can limit the growth of pests. Refrigeration can prevent the growth of pests, and freezing can kill pests.
2. Drying and insect repellent, drying and insecticide. Drying at a high temperature of more than 50 degrees can drive away stored grain pests, but it is generally not thorough, and sometimes the high temperature will water the corn.
Cause damage. 3. Aluminum phosphide fumigation and insecticide, this is a method used by the national treasury for more than 40 years, and it is still the first choice. Insect and phosphorus mixed with corn and insect control, this is good for prevention, but it is more troublesome.
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2. Precautions for corn storage.
1. Remove impurities.
Corn harvest often contains more impurities such as unripe grains, broken grains and cob fragments. The amount of respiration is large, the hygroscopicity is strong, the amount of bacteria is large, the void is small, and it is easy to accumulate damp heat.
Causes fever. Mold and insect infestation. Therefore, after harvesting, corn must be sieved to remove impurities before being stored in storage.
2. Dry and moisture-proof.
The key to safe storage of corn is to improve the quality of storage and reduce the moisture of grain, so it is necessary to control the moisture and temperature conditions before storage. According to practice, corn contains water and has a temperature of about 35, which is generally safe to store. After harvesting, corn should be fully exposed to the sun or dried, and ventilation and humidity should be paid attention to during storage, and newly harvested corn should be kept dry and low temperature conditions to ensure safety.
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3. Prevention and control of pests and diseases.
During the storage period of corn, it is necessary to check frequently and do a good job of mildew and insect control. When there is a sweet smell in the corn silo, it should be turned over or dried in time. Before the spring warm, the corn should be stored in a cold cap, which has a good effect on preventing moth pests.
The corn that has been infected with pests can be screened, and if the corn is combined with winter freezing and spring screening, the insect control effect is better.
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Corn with insects can be sprayed with pesticides, so that all the insects can be killed, so that the corn can grow better, and after the insects are gone, the loss of corn can be reduced.
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It needs to be dried, so that this problem can be solved, and in most cases it is solved by drying.
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Be sure to spray more insecticides, clean up the corn in time, and loosen the soil in time, so that you can reduce losses.
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Summary. If you notice that there are long bugs on your corn, you can take the following measures:1
Hand picking: Pick up the bugs by hand, use gloves or clips and other tools to put the bugs in a plastic bag, seal them and discard them. 2.
Use pesticides: Some pesticides can be used to spray corn and kill bugs. However, the use of pesticides needs to pay attention to safety and avoid harm to the human body and the environment.
3.Use natural predators: Some predators can be introduced to control insect infestations, such as spiders, ants, etc.
4.Strengthen management: Strengthen the management of corn, remove fallen leaves, weeds, etc. in time to reduce the breeding of insect pests.
In short, for the treatment of corn worms, different measures need to be taken according to the actual situation, and a variety of methods should be used comprehensively to achieve effective control effects.
If you notice that there are long bugs on your corn, you can take the following measures:1Hand picking:
Pick up the bugs by hand, use gloves or clips and other tools to put the bugs in a plastic bag, seal them, and discard them. 2.Use of pesticides:
Some pesticides can be used to spray corn and kill bugs. However, the use of pesticides needs to pay attention to safety and avoid harm to the human body and the environment. 3.
Use Natural Predators: Some predators can be introduced to control insect infestation, such as spiders, ants, etc. 4.
Strengthen management: Strengthen the management of corn, remove fallen leaves, weeds, etc. in time to reduce the breeding of insect pests. In short, for the treatment of corn insects, different measures need to be taken according to the situation of the real size pants, and a variety of methods should be used comprehensively to achieve effective control effects.
You've done a great job! Can you elaborate on that?
You will deal with it on a case-by-case basis.
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During this period, the rainy season began in the main corn-growing areas of northern China. This is a good thing and is good for the growth of corn. Corn armyworms belong to the family Lepidoptera and Noctuidae and are also known as marching insects.
Body length 17-20 mm, light grayish-brown or yellowish-brown, males dark. It is an important migratory omnivorous crop pest in China. With a lot of precipitation and high humidity, it is also a favorite environment for corn armyworms.
As soon as they encounter this weather condition, they start to breed wildly. According to monitoring, the peak of the first generation of armyworm adults in Jianghuai, Huanghuai and other places moved to Northeast China and North China. At the same time, due to the influence of foreign insect sources and suitable migration conditions, the number of grassland borer adults in eastern Inner Mongolia, Heilongjiang and western Jilin has increased sharply, showing a trend, posing a threat to agricultural production.
Therefore, it is an important period for the control of corn armyworm.
At present, Northeast China, North China, Huanghuai and other places are in the corn seedling stage. The villagers should take the optimization of grain production as the goal, carry out flood prevention and drought control and pest control at the same time, make arrangements as soon as possible, and implement prevention and control measures. According to the migration law of armyworms and the characteristics of the hazard of annihilation, strengthen classification guidance and implement key measures.
It is necessary to strengthen monitoring of the migration areas of armyworm adults, timely grasp the amount of migration, transit and retention, and take effective measures to prevent and control them. For adults who migrate into the area, physical trapping and killing, on-site egg search, and pesticide control of pups should be prepared as soon as possible. Corn armyworm control:
Adult insect control should use the phototaxis and chemotaxis of armyworm adults, and use sweet and sour solution, sexual attractants, insecticidal lamps and other pollution-free technologies to trap and kill adults, so as to reduce the number of eggs and reduce the density of field population. Larval control and harm reduction: spray the drug in time at the early stage of larval attack and eliminate larvae before the third instar.
Toxic soil: Mix 40-50 kg of sand and sprinkle it on the heart leaves of corn to both maintain natural predators and prevent corn borer.
There is also a pest beet armyworm, the first-instar larvae gather on the back of the leaves, spin silk into a web, and eat a small amount. After the third instar, they scatter together, causing harm, and food consumption increases dramatically, appearing at night. In severe cases, they will eat the mesophyll, leaving only the veins and even stripping the stem cortex.
The larvae can migrate in groups. After 3-4 years of age, they dive into the lower part of the plant or soil seams during the day and go out to forage for food at night. The damage of corn borer is mainly due to the decrease in photosynthetic efficiency after the leaf is bitten by larvae; The male spike is eaten and usually breaks easily, affecting pollination; If you eat bracts and filaments, it will cause food shortages and grain wilt; When the stem, cob and cob are eaten, a tunnel is formed, which destroys the transport of water and nutrients in the plant, increases the stem folding rate, and reduces food production.
Corn is the seedling stage from seedling emergence to jointing. The main task of field management at the seedling stage is to promote the growth of the root system, ensure the whole and uniform seedlings, cultivate strong seedlings, and lay the foundation for high yield. The seedling stage is also a relatively easy stage for problems to occur throughout the growing period of maize.
During this time, there are many pests in the cornfields. If we don't pay attention to prevention and control and let it continue, it will cause disaster.
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I think the best way is to use imidacloprid for prevention during the growing period of corn, generally spraying 2 or 3 times.
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If you want to prevent it, you must spray more pesticides on corn at ordinary times, and you must also water and fertilize Yuzhong denier rice more often, only in this way can you prevent the appearance of this insect. Sell group disturbances.
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The first thing to do is to pay attention to the temperature of planting, and must choose the right fertilizer according to the planting environment, and at the same time should use pesticides in a timely manner.
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1. The main mating of corn insects must meet the following conditions; At the right temperature, pests can freeze to death at minus 5 degrees, and below 15 degrees, pests do not reproduce and grow slowly.
2. It can kill insects above 60 degrees. There is plenty of oxygen. Oxygen is less than 8%, which can inhibit the growth of pests.
3. The following methods are used to kill insects, which can be killed by freezing or drying at high temperatures, but the temperature is too low or too high to affect the activity of corn. Low temperatures below 10 degrees Celsius can suppress pests.
4. Through tight sealing, oxygen can be isolated, and general auxiliary aluminum phosphide fumigation can kill insects.
5. More than 90% of corn insecticide is made of aluminum phosphide, and about 10% is mixed with insect-proof phosphorus to control pests.
6. Ear of corn storage, because the germ part is protected, it is difficult to have insects, and the ear of corn is well ventilated, which is easy to store.
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Do a sit-up try,
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