Lawn pest-wheat bug

The wheat bug bug belongs to the family Hemiptera Pentatomidae. In recent years, due to the abnormal change of air temperature, the harm of wheat bug is becoming more and more serious, especially to dry ripe grass, shearing grass and other lawns.

I. Ecological habits and characteristics

The nymph is small, has incomplete wings, can not fly, and can jump for a long distance. The body color ranges from reddish to black, with a yellow-and-white stripe on the back of the body. The adult is black, about 1 cm long and has white folded wings. Peeling off the dying lawn, you can see pests crawling everywhere.

The wheat bugs like heat and become more active with the increase of temperature, and the activity reaches its peak in the continuous dry and hot weather.

The female begins to lay eggs in late spring and usually lays 200 eggs in about 25 days. The eggs are placed in the leaf sheath of lawn plants, hatch into nymphs in 7 to 10 days, and become adults after 5 weeks. One generation can be completed in 7 to 8 weeks, and two or more generations can occur in one growing season. the first generation often completes the life cycle before the first Frosts Descent. Subsequent generations spend the winter in litter, hedges, and lawn withered grass or soil.

Second, harm

Use piercing and sucking mouthparts to absorb juice, making stems and leaves soft, easy to roll, and even death. The affected lawn turned grayish brown and stinked. In the place with mild temperature, it does serious harm to Kentucky bluegrass and shearing glume lawn.

III. Prevention and control methods

When overwintering, cleaning the lawn, removing lawn debris and withered grass can eliminate a large number of pests. Shading with trees and shrubs can inhibit its development. When sowing and planting lawn, the bed soil can be mixed with a certain amount of sand, gravel and mixed fertilizer, which can prevent its development. During the onset period, the application of carbaryl wettable powder has a certain effect. Before the plant dormancy, use 48% chlorpyrifos EC 100 ml per mu, add water spray to kill insects.