How do herbicides cause drug damage to tobacco leaves?

How do herbicides cause drug damage to tobacco leaves? Is there any way to treat it? Some herbicides are widely used to control weeds in rice or tobacco fields, especially in rice fields. Some farmers often use high concentrations of herbicides. If tobacco is planted next season, the residual herbicides will often cause drug damage to tobacco leaves. In addition, the selectivity of herbicides is relatively strong, the physical and chemical properties, action sites and principles of different varieties are different, especially in the process of use, farmers do not pay much attention to the dosage and technology of herbicides, which is easy to produce herbicide damage. The main symptoms of drug damage are as follows: leaf deformity, yellowing, albino, etc.; some are like cauliflower, flower leaf or rat tail; old leaves are scorched, new leaves are normal; growth stagnation, seedling shrinkage, plant dwarf, serious death will occur. 1. Measures to prevent herbicide damage. Accurately select the variety of herbicides. two。 Proficient in herbicide use technology and operation points. 3. Strictly control the dosage and concentration of herbicides. 4. Uniform spray, targeted spray to improve the quality of pesticide application. 5. Do not mix herbicides with other pesticides or fungicides at will. 6. Clean the spray tools in time after spraying the herbicide. II. Remedial measures for herbicides after the use of herbicides, it is necessary to carefully observe the growth of tobacco. When the growth of tobacco is abnormal, it is necessary to quickly determine whether it is a tobacco disease or herbicide damage. If it is caused by herbicides, the degree of drug damage should be analyzed. When the drug damage is serious, only replanting other crops or replanting should be adopted. If the symptoms of drug damage are general, or within the limits of affordability in tobacco production, the following measures can be considered for remediation. 1. Spraying Tianda 2116 tobacco special type in time after the occurrence of drug damage plays an important role in relieving or alleviating the drug damage caused by herbicides. two。 Strengthen agricultural management, irrigation, drainage, loosening soil, in order to promote the growth of tobacco and accelerate the degradation of herbicides. 3. Plant ash or lime can be used or plant growth regulators can be used to promote tobacco growth. 4. Topdressing quick-acting chemical fertilizer or foliar topdressing. Potassium dihydrogen phosphate or Penshibao can alleviate the damage of some herbicides to a certain extent. Click to get more herbicide application techniques click to get more pesticide application techniques click to get more tobacco planting techniques