How to control wheat diseases and insect pests in sowing time

The sowing date of wheat is the key period for the control of many kinds of wheat diseases and insect pests, which saves labor, time and medicine. The main control objects of diseases and insect pests in wheat sowing period are underground pest grub, mole cricket, golden needle worm, wheat midge, wheat sheath blight, total erosion disease, virus disease, yellow dwarf disease, cluster dwarf disease, smut and so on. The prevention and control measures are as follows:

Select varieties resistant to diseases and insect pests

Select disease-resistant varieties according to the main local diseases and insect pests, and do a good job in the rational distribution of varieties.

Create an ecological environment for disease prevention

Fine soil preparation, removal of disease and weeds in the field. Adhere to the application of mature farm manure, scientific and balanced fertilization. The cultivation measures such as sufficient moisture, late sowing in the appropriate period and precision and semi-precision sowing were adopted to cultivate strong wheat seedlings and improve the disease resistance and stress resistance of wheat itself.

Treatment of soil

In the area of re-occurrence of underground pests and wheat midges, 50% phoxim or 40% methyl isosphos EC 0.5 kg per mu can be used to add 2 Mol 3 kg of water, and 20 Mol 25 kg of fine sandy soil can be mixed to make poisonous soil plough. spread the ground evenly before ploughing and turning into the soil. For the re-occurrence of total erosion disease, 50% carbendazim or 50% methyl topiramate is used for 2 MUE 2.5 kg per mu, and the fine soil is mixed with 15 MUR 20 kg. Spread the ground evenly before ploughing and turn it into the soil with the ploughing.

Seed dressing with medicament

For the general occurrence area of underground pests, 50 grams of 40% methamidophos or 50% phoxim EC, 4-5 kg of water and 40-50 kg of mixed wheat seeds can be used. Wheat sheath blight, smut and stripe rust can be mixed with 2% Likexiu at 0.1%-0.15% of seed weight, or 20% triadimefon EC at 0.15% of seed weight, or 12.5% Heguoli (diniconazole) at 0.12% of seed weight. The excessive dosage of triadimefon and gramineae has an effect on the emergence and growth of wheat, so the dosage should be strictly controlled to avoid drug damage. Wheat total erosion disease, you can use 2.5% Xerox 100ml, add water 1.52kg, mix wheat seeds 50100kg, dry and sow. Wheat yellow dwarf disease, bushy dwarf disease, with 75% methyl mixed with phosphorus EC 100ml, add water 3kg, mix wheat seed 50kg, mix well and stew for 12 hours to sow seeds. In the mixed areas of disease and insect pests, it is necessary to vigorously promote the mixture of fungicides and insecticides, each of which should be mixed with insecticides and then fungicides, and strictly in accordance with the operating rules of seed dressing to prevent human and animal poisoning.

Seed coating

Seed coating agent is a new type of pesticide which is composed of insecticides, fungicides, micro-fertilizers, plant growth regulators, film-forming agents and so on. Seed coating has the advantages of simple, slow release and long-term effect. it not only has the function of controlling diseases and insect pests, but also has the function of planting fertilizer, which should be popularized in a large area. Seed coating agents with appropriate formulations can be selected according to the types of diseases and insect pests.