The first is to change the planting system and make a rational rotation and intercropping. Through rotation, the number of pathogenic bacteria in the soil and the number of pests and diseases can be significantly reduced.
Secondly, the residual plant residues in the field are burned in a concentrated manner, and then the plant ash is returned to the field. This can effectively kill the eggs, parasites, etc. remaining on the straw, and can effectively provide potassium fertilizer.
The third is that after the emergence of potatoes, each plant is planted with 100 mL of avermectin at a rate of 100 mL, or avermectin is used to mix soil. This can effectively prevent and control soil-borne diseases and insect pests.
Fourth, before sowing, the qualitative and quantitative determination of the nutrient elements in the soil shall be carried out, and a reasonable fertilization system shall be established to apply the organic fertilizer and improve the soil structure.
The fifth is planting potato varieties resistant to continuous cropping (such as disease resistance, self-toxicity, salt tolerance, etc.).
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