What kind of insect is a rice seedling bitten off? What medicine to use

What pesticide do you use when rice seedlings are bitten off, thank you.

Summary. 1) The bite of rice kernel is generally caused by insect pests such as rice borer or rice leaf roller moth. Among them, the rice borer belongs to the insect order Lepidoptera, the adult body is about 1 cm long, the wings are almost transparent, and there are three gray-brown fine lines on the forewings, and the larvae mainly damage the seedling parts of rice at the germination and heading stages.

The rice leaf curler moth belongs to the insect order Lepidoptera, the adult body is about 2 cm long, the body is light yellow-brown, ** has two dark longitudinal lines, and the larvae mainly bite the heart of the grass in the early stage of rice growth. 2) If the rice kernel is bitten off, corresponding control methods need to be taken for different insect pests: 1

Prevention of rice borer: The damage of rice borer can be prevented through reasonable selection of varieties, circular cultivation, timely cleaning of straw, vigorous harvesting of dead stubble, restriction of chemical fertilizers, etc., and insecticides and biological pesticides can be used for treatment. 2.

Prevention of rice leaf roller: Rice can be kept healthy by deep tillage, top dressing and soil fertility enhancement, and can be sprayed with effective insecticides to control fertilizer pests.

What insect bites off the heart of the rice.

How to prescribe the right medicine.

1) The bite of rice kernel is generally caused by insect pests such as rice borer or rice leaf roller moth. Among them, the rice borer belongs to the insect order Lepidoptera, the adult body is about 1 cm long, the wings are almost transparent, and there are three gray-brown fine lines on the forewings, and the larvae mainly damage the seedling parts of rice at the germination and heading stages. The rice leaf curler moth belongs to the insect order Lepidoptera, the adult body is about 2 cm long, the body is light yellow-brown, ** has two dark longitudinal lines, and the larvae mainly bite the heart of the grass in the early stage of rice growth.

2) If the rice kernel is bitten off, corresponding control methods need to be taken for different insect pests: 1Prevention of rice borer:

The harm of rice borer can be prevented through reasonable selection of missing seeds, circular cultivation, timely cleaning of sail straw, vigorous harvesting of dead stubble, restriction of chemical fertilizers, etc., and insecticides and biological pesticides can be used for treatment. 2.Prevention of rice leaf rollers:

Hail can be used to maintain rice health through deep tillage, top dressing and soil fertility enhancement, and can be sprayed with effective insecticides to control fertilizer damage.

Dear, the right medicine is as follows:1To prevent the harm of rice borer, some chemical pesticides can be used, such as oxygen residual orange dimethoate, drag rod, etc.

In addition, biopesticides such as Bacillus thuringiensis, streptomycin-lactocyte erector thalamine inhibitors can also be used for treatment. 2.To prevent rice leaf rollers, you can consider using chemical pesticides that are effective in the prevention and control of fertilizer damage such as soybean field golden dragon.

Summary. Pro, the reasons why rice is bitten off are as follows:1

Pests: It can damage many buds and internal tissues of rice, such as rice planthoppers, thrips and other pests. 2.

Bollworms: They may feed on rice from seedling stage to heading stage throughout the year, affecting plants and yields. 3.

Late-maturing root-knot nematodes: prefers to infect alternating areas of water and drought, and when the water level is low or arid, it can merge with small spots in saline soil areas. 4.

Wild mice: Eat a lot of mature rice during the harvest period, causing losses. 5.

Diseases: For example, brown leaf blight, brown spike blight, rice blast, white leaf blight, etc., will affect the growth and development of rice.

What is this worm and how to use medicine.

Pro, the reasons why rice is bitten off are as follows:1Pests:

It will damage many buds and internal tissues of rice, such as rice planthoppers, thistles and other pests. 2.Bollworms:

Rice may be sucked from seedling stage to heading stage throughout the year, resulting in plant and yield improvement to the extent that it is affected. 3.Late-maturing root-knot nematosal lead worm:

It prefers to infest alternating areas of water and drought, and when the water level is low or dry, it can merge with small spots in the saline soil area. 4.Wild mice:

During the harvest period, a large amount of mature rice was eaten, resulting in losses. 5.Diseases:

For example, brown leaf blight, brown flower spike blight, rice blast, white leaf blight, etc. will affect the growth and development of rice.

Dear, according to the visual inspection of the clump you provide is the rice borer, you can use some chemical pesticides, such as dimethoate, drag rod, etc. In addition, biopesticides such as Bacillus thuringiensis, streptomycin-lactamase inhibitors, etc. can also be used for treatment.

What a bug. Dear, this kind of insect is called arch feces on the side of our bright penetration, and it is also called rice borer, which is usually black or dark brown and about 1-2 cm long. They burrow into rice plants and eat the stems, leaves, and ears of rice. You can attack the ridge using the Zen method above**.

Hello, it may be a rice rhizome leaf beetle. First, the harmful symptoms of eating roots and leaves beetle rice eating roots and leaves beetle is called rice golden root goldenrod beetle, is a common occurrence of rice pests in Yunnan, adults and larvae will harm rice, but the larvae bite the rice roots, after the rice roots are damaged, the plant grows slowly, then the shed rice leaves are yellow, when the rice roots are black, the leaves are yellow and red and scorched, and the rice plants are lightly pulled out, resulting in a lack of ponds, and the general loss of Sun Xue rate is 10-15%, and in serious cases, it will cause no harvest of Youju particles. 2. Prevention and control methods of eating roots and leaf beetles 1. Improve the drainage and irrigation system, change the winter soaking field to winter planting, implement water-drought rotation, and use 2,4 drops to eliminate weeds such as eyewrens in the field.

2. Sprinkle 40-50 kg of quicklime per mu in winter, and plow and rake the paddy field. 3. Put ducks to peck when plowing and raking rice fields. 4. When the adult worms are in full bloom, spray with about 60 kg of water with 90% crystal trichlorfon per mu per 150 grams.

The main insect pests in the rice filling stage are armyworm, dimorphic borer, and rice water weevil. At the grain filling stage of rice, there will be sheath blight, basal rot disease, leaf tip blight, rice leaf roller, rice planthopper and armyworm. There are mainly rice sheath blight, good noisy bridge, rice blast, three chemical borer, three chemical borer, etc.

Diseases in the rice filling stage include: rice blast, sheath blight, and insect pests are: two chemical borer, rice leaf roller borer, etc. Bump.

Rice borer is a kind of insect in the family borer, commonly known as borerworm.

The larvae of the borer damage the leaf sheath, heart leaf and rice stem of rice by eating it, resulting in dead sheaths, dry seedlings and white ears, and causing serious yield reduction at the maturity stage.

The borer is also called the borer.

Rice sheath blight, rice koji disease can be used fluconazole, hexaconazole, tebuconazole, benzene. Propiconazole, azoxystrobin, etc.

Rice blast can use tricyclazole, rice blast, rice blastamide, chunleimycin, etc.

2. Chlorantraniliprole, fenozazide, indoxacarb, Bacillus thuringiensis and rice planthoppers can use dinotefuran and endidine. Pymetroz, permethrin. pymetrozine, etc.