In recent years, due to factors such as climate, species, cultivation and management, wheat pests and diseases at seedling stage have become more serious and ecological, and they need attention and early prevention and treatment.
Wheat seedling pests
The main pests of wheat seedlings are locusts, ashes, earthworms, small tigers and earthworms.
In addition to direct damage to wheat seedlings, aphids and sloughs are also known to spread pests of wheat yellow dwarf disease and bush dwarf disease. The control methods of these two kinds of pests are as follows: First, remove the weeds beside the fields and the canal, and secondly, the chemical control. After the wheat is seedlings, use 10% imidacloprid WP 1000 times or other pyrethroid insecticides to add appropriate amount. Silicone auxiliaries spray 5 to 10 meters wide drug tapes at the edge of the field and land.
Prevention of earthworms, generally mu with 50 milliliters of pyrethroid pesticide plus inhalfenone 20 milliliters mixed with wheat bran about 10 kilograms, in the 2nd in the morning before 10 am evenly spread to the wheat field.
Prevention of small tigers, until the emergence of wheat with 3% phoxim granules, 6 to 8 kg per acre applied to the root near the wheat seedlings.
The prevention and control of earthworms use 4.5-percent cypermethrin EC 40-60 ml per mu, or 2.5% bifenthrin EC 80-100 ml, plus 20 ml of inhaled terpene, 30 kg of water, evenly sprayed during the adult stage.
Wheat seedling disease
Wheat seedling diseases mainly include rust, total erosion and sheath blight.
When the incidence of wheat rust reaches 5%, the use of 15% triadimefon WP 50 grams, or 20% tetracycline EC 40 ml, or 12.5% ​​speed Baoli WP 15 to 30 grams, watered 50 to 70 kg spray.
For lands that have undergone full-bleeding, 20 to 30 days after sowing wheat, use 20% tetrafencarbochlor per acre 120 to 200 grams, watering 50 to 60 kilograms, spraying seedlings along the ridge and returning to the green in the following year. , And powdery mildew and rust.
For plots with severe wheat blight, use 20% triamcinol EC 150g per mu, or 5% Jinggangmycin 150-200g, or 50% carbendazim 50-75g, watered 50 to 75 kg Shun Ridge spraying.
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