Early prevention of wheat bush dwarf disease
According to the medicinal part, we called the kind that use herb leaf to process Chinese Medicinal Herbs Leaf. A leaf is an organ of a vascular plant and is the principal lateral appendage of the stem.Leaves can have many different shapes, sizes and textures.As a important part of the plant, it still plays an important role in herbal medicine area. We use the most professional and scientific way to do the panting and process so as to get the top quality traditional Chinese medicine.
Chinese Medicinal Herbs Leaf Chinese Medicinal Herbs Leaf,Herb Eriobotryae Folium,Chinese Medicinal Herb Dried Leaf,Natural Chinese Medicinal Herbs Leaf Drotrong Chinese Herb Medicines Co.,Ltd. , http://www.drotrongherb.com
First, the planting layout resulted in many flowering fields, and the farmer's field operation time was not uniform to benefit the habitat and avoidance of the planthoppers. After the wheat emerged, the planthoppers were easily damaged from the fields and into the surrounding fields.
Second, fertility is good, and extensive field farming results in a high density of weeds in the field, providing sufficient food sources and overwintering sites for the fly.
Third, climatic conditions are suitable for the reproductive hazards of Laodelphax striatellus. The fifth generation of this plant is the fifth generation in China. The main hazards to wheat are the fourth generation and the overwintering generation. In September, there is a large amount of rainfall. The planting area is large, the wheat planting is early, and the fourth generation of the plant fly The active period of the adult met the susceptible period of the seedlings of the wheat, and the incidence of the poisonous field was heavy for a long time. Last autumn and winter, the temperature was high, the rain and snow were less, it was very beneficial to the wintering of the planthopper, and the insect source was accumulated for the winter hazard. Attention should be paid to the early spring insect protection. Treatment.
Prevention
1. Clear weeds. Immediately before and after returning green, weeds in fields, fields, roadsides, and ditches are removed to reduce insect and poison sources.
2. Chemical control. Since the main damage to wheat caused by Laodelphax striatellus is two peak periods, that is, after the emergence in autumn and after the return of green wheat in spring, an “early†character should be scratched on the control of pesticides. 10% of imidacloprid 10g added 4.5% of beta-cypermethrin in 30ml sprayed wheat field and surrounding fields, also 40% of omethoate per sprayer to spray 30ml of the drug, when the number of ashhoppers is large (more than 10 per square meter) It should also be added to 1.5% disease prevention II or 20% virus A to prevent diseases and improve the control effect.