How to do well the prevention and control of wheat autumn

It is about to enter the autumn sowing season, and the prevention and control of pests and diseases during wheat sowing is the key to ensuring wheat seedlings and seedlings. To do a good job in wheat seed dressing to completely control pests and diseases is to ensure the high yield, stable yield and good harvest of wheat.

In recent years, due to the larvae returning to the underground pests, the climatic factors have increased year by year, making farmers friends unprepared. The main pest and disease analysis of wheat is summarized as follows: 1. Soil-borne diseases, mainly sheath blight, total erosion, root rot. These germs can survive for many years in the soil, and the bacteria can be infested when the seeds start to germinate after sowing. 2, the system infects diseases, mainly stalk smut, smut and smut, the pathogens invade the growth point from the seed germination, systematically infect with the growth of wheat plants, and the symptoms at the ear stage are harmful. 3. Underground pests, mainly cockroaches, cockroaches and golden worms, bite the roots of wheat in the autumn seedling stage and after returning to green, resulting in lack of seedlings and ridges. 4. Wheat aphids, sucking the juice of leaves, stems, tender heads and tender ears. The indirect hazard is the spread of wheat yellow dwarf disease.

The best way to solve the above-mentioned diseases, soil-borne diseases and underground pests and mites is seed dressing. Seed coating is a seed treatment technology that combines disease prevention, pest control and disinfection, which not only avoids pests and diseases, but also The coated seeds also have a high germination rate, developed root system, promote tillering, and increase yield and quality.

1. Prevention and control of soil-borne diseases and seed-borne diseases

At present, most of the fungicides are one-way conduction from the bottom to the top, and the spraying of the ground on the ground cannot reach the diseased part, and the effect of preventing and transmitting diseases and soil-borne diseases is not satisfactory. The use of chemical dressing can not only prevent and control wheat smut, but also effectively control the occurrence and damage of wheat root rot, total etch and sheath blight, and can be mixed with seed dressings such as difenoconazole or tebuconazole. Kinds, can promote roots and strong seedlings, increase tillering, prevent disease and lodging, and ultimately increase production. In the severely affected area of ​​wheat total etch, it can be mixed with 12.5% ​​thiabendamine suspending agent.

2. Prevention and control of underground pests and wheat stubble

Seed dressing with pesticides before sowing is the most effective measure to control wheat underground pests. For the underground pest-producing area, you can use imidacloprid seed coating agent or butyl thiocarbavir seed dressing. It can be said that it is a mixture of three preventions: long-term control of wheat aphids, delaying the occurrence of aphids, reducing the number of insects, reducing the number of fights; effectively controlling wheat Underground pests such as cockroaches, golden worms, and cockroaches; control or alleviate wheat dwarf diseases and yellow dwarf diseases transmitted by locusts and planthoppers.

A variety of disease and pest mixed areas, it is necessary to vigorously promote the application of fungicides and insecticide compound coating agents or seed dressings for coating or seed treatment. Farmers should choose the appropriate local seed coating agent according to the main local pests and diseases.