Corn seedling area should pay attention to the prevention and control of underground pests
Maize seedling stage is the main period of occurrence of underground pests, and the damage caused by underground pests such as ground tigers and earthworms is relatively large. [Occurrence characteristics] The underground pests of corn seedlings mainly include small tigers, earthworms, cockroaches, and gold.
Maize seedling stage is the main period of occurrence of underground pests, and the damage caused by underground pests such as ground tigers and earthworms is relatively large.
[Occurrence characteristics]
The underground pests of corn seedlings mainly include small tigers, earthworms, cockroaches, and golden needles. The larvae lurked at 5 cm on the surface of rhizomes. They began to injure after sunset, entered the peak of damage at 10-12 pm, and drilled into the ground after dawn. Near the surface of the plant, typical nocturnal pests, mainly on the ground and underground parts of the seed and seedlings, resulting in lack of seedlings.
[control methods]
1. Irrigation and deep ploughing: farmland irrigation combined with deep ploughing before spring sowing, clearing the weeds at the end of the field to reduce the number of insect populations and breeding grounds for eggs, changing the soil temperature and humidity through irrigation, causing an unfavorable environment for pests, and bringing about a pest mortality rate G0% or more.
2. Soil treatment: Sprinkle 15 to 25 kg of 50% phoxim emulsion in 100 ml slag and spread it on the ground before planting. Into the ground, you can kill cockroaches and wireworms.
3, spray killing: with 2.5% Bromothrin, 2.0% fenvalerate vinegar 3000 times, and other pyrethroid insecticide spray the ground; control of earthworms can also be used to mix trichlorfon poison bait Trapping.
4, spread of poisonous soil: with 50% phoxim 0.25 kg mixed fine soil 50-60 kg, applied around the corn seedlings. Can control a variety of underground pests.
5, artificial killing: Maize seedling stage, sooner or later in the field when a tiger is found to be harmed, can be caught in the rhizosphere soil of the plant to catch larvae or irrigation near the bitten plant. The larva will climb out of the earth to catch it.
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