Verticillium wilt from cotton is protected from seed

The rotation effect is good. Production practices and scientific experiments have proven that with one year rotation of other crops, Verticillium wilt can reduce 20% of the occurrence of the disease, rotate for 20% to reduce the incidence of 30%, rotation for 3 years to reduce the incidence of 45%, rotation for 4 years to reduce the incidence of about 65%.

Potassium fertilizer is used to increase the usefulness. The rate of Verticillium wilt disease in cotton fields using potash fertilizer and organic fertilizer is significantly lower than that of the control. Therefore, based on the application of sufficient nitrogen, phosphorus, and trace fertilizers, 10 kg of pure potassium and 2 tons of farm organic fertilizer are applied to the moderately fertile plot. , can reduce the occurrence of Verticillium dahliae.

The incidence of land formation is light. Smooth cotton fields, eliminate dead land, fill in trenches, waves, and improve the drainage system. Preventing the accumulation of water in cotton fields after rain is one of the measures that cannot be ignored in the control of Verticillium dahliae in cotton.

The original species is guaranteed. The state trials and provincial new varieties introduced by the scientific research departments are generally selected through disease nurseries and have strong disease resistance. Planting cotton seed is one of the most economical and effective measures to prevent Verticillium dahliae in cotton.

Delay the sowing of the disease. Insect-resistant cotton is mostly medium-early-maturing varieties and the sowing date should not be too early. The early stage of sowing was low, the buds blossomed early, the seedlings emerged sooner, seedlings were stronger, and the disease resistance was enhanced.

Short-term lifted film to mention resistance. The mulch cotton should be uncovered from the bud to the early flowering period, and the mulch cotton generally enters the bud period on June 20th. During this period, the uncovering film can promote root down-barreling and improve the resistance and disease resistance of cotton. At the same time, cultivating soil through cultivators will enable the drought to be poured and the ridges to be discharged.

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