?€€ It is of great significance to prevent pests and diseases in wheat planting period and to prevent the occurrence of pests and diseases in the seedling stage and ensure the effective control of wheat pests and diseases throughout the year. Recently, the National Agricultural Technology Extension Service Center issued guidelines for the prevention and control of wheat pests and diseases, suggesting that different ecological zones use agricultural, biological, physical, chemical and other comprehensive measures to plant disease-resistant varieties, vigorously promote chemical dressing and rationally adopt appropriate The late sowing, clearing the field self-produced wheat seedlings and weeds along the roadside, effectively control the pests and diseases of wheat.
According to the winter wheat planting situation and the occurrence of pests and diseases in the past year, the wheat pest control in autumn and winter is mainly in the Huanghuaihai wheat area, the middle and lower reaches of the Yangtze River, the southwest wheat area and the northwest wheat area. Huanghuaihai wheat area, mainly with sheath blight, root rot, total etch, smut, cyst nematode, yellow mosaic disease, underground pests and weeds, and cure rust, powdery mildew, mites and ash Flying insects and other pests. The wheat area in the middle and lower reaches of the Yangtze River is mainly affected by sheath blight, total erosion, smut and smut, and a few fields have underground pests. The southwestern wheat area is dominated by wheat stripe rust, taking into account pests such as scab, powdery mildew, wheat stubble, wheat spiders and underground pests. In the northwest wheat area, wheat stripe rust, powdery mildew, smut and underground pests are the main control objects.
The key control technologies are:
?€€?€€ 1. Planting resistant ( resistant ) pests and diseases.
?€€?€€ 2. Chemical dressing. According to the condition of pests and diseases, high-efficiency suspension seed coating agents such as tebuconazole, difenoconazole, fludioxonil, diphenyl ether, and flavonol are used to prevent disease by wheat seed coating, and coating with appropriate amount of imidacloprid suspension coating agent Pests, yellow dwarf disease and bushy dwarf disease, the combination of the two can cure the main pests and diseases in the seedling stage. In the strip rust disease summer area and its surrounding wheat area, seed dressings such as triadimefon and tebuconazole are used for seed dressing, and the stripe rust and powdery mildew in the seedling stage are treated concurrently to prevent the occurrence of smut in the later stage. In the total eclipse-producing area, the seedlings or coatings of the difenotropine suspension seed coating agent and the thiamethoxam suspension agent are mainly used ; the phosophos or chlorpyrifos seed dressing can be selected for the underground pests ; the soil-borne diseases and the underground pests For particularly severe fields, it is necessary to carry out the treatment of the soil. Seedling stage aphids, wheat spiders and underground pests occur in areas with severe damage, and seed dressing is carried out with phoxim or imidacloprid suspension seed coating.
?€€?€€ 3. Agricultural measures. In areas or areas where cystic nematodes are severely affected, it is important to promote the suppression of disease control measures after sowing and autumn seedlings. In the summer area of a€?a€?wheat stripe rust, the method of artificially eradicating and spraying herbicides should be used to remove the self-produced wheat seedlings. According to the lyrics during the sowing period, the suitable sowing time should be adopted to reduce the infestation of stripe rust in the seedling stage.
?€€?€€ 4. Autumn seedling prevention. According to the incidence of autumn saplings such as stripe rust, powdery mildew and sheath blight, when the disease occurs seriously, carry out the spot protection. In the southern part of the stripe rust fungus winter area, the early disease field is treated with chemicals, and the chemical agent can be controlled by a triazole fungicide spray. Prevention and control should be carried out as early as possible in the seedling stage of sheath blight ; in the Weibei dryland area, Gansu Gandong area, southern Anhui area, southern Ningxia winter wheat area, on the basis of seed dressing prevention, attention should be paid to prevention and control of seedling stage aphids, prevention The occurrence of wheat yellow dwarf disease.
Reliable reputation chrome plated style bathroom brass sink Waste Kit Pipe
Details & Features:
1 1/4" Chrome plated brass, public wash basin waste , no overflow, 63mm flange x 75mm long chrome plated brass sleeve, chrome plated cast brassbacknut,with chrome plate brass extension pipe
Public Wash Basin Waste
Free samples avaliable (Freight is not included)
L/C or T/T
Depends on the quantity
Outer packaging: Carton Box
Inner packaging: white/colour box or blister package or customized
Waste Pipe,Plumbing Waste Pipe,Waste Kit Pipe,Flexible Waste Pipe
Yuyao Sanyin Bathroom Technology Co Ltd , https://www.chinasanyin.com