Antibiotics and carbamates

① streptomycin: 12.5% streptomycin solution. This agent is effective to the diseases caused by bacteria, especially to Eruimia sPP. This agent should not be mixed with alkaline pesticides and fertilizers. The tolerance of Guolan plant to this agent is low, and the excessive concentration is easy to cause drug damage, and its symptom is leaf margin whitening, especially in the high temperature period. This agent is an antibiotic pesticide, which has been applied too many times or frequently. Bacterial pathogens are easy to cause drug resistance to this agent and can not achieve the killing effect. If national orchid plants are infected with bacterial diseases, two or three different dosage forms should be selected and pesticides that are effective against bacterial pathogens should be used in turn to avoid futility.

② streptomycin: 50% methyl dobutamine and 18.8% streptomycin are mixed to form 68.8% trillion mycin wettable powder. It has control effect on bacterial disease Erunia spp. And fungal disease Colltotouicum spp. It is most likely to cause drug damage when used in the high temperature period in summer and under the condition of improper dilution ratio. If used continuously for many times, the control effect will be reduced due to the emergence of drug resistance. Pesticides used for the control of bacterial diseases should be used in turn with other pesticides that are effective against bacterial pathogens. This agent should not be mixed with alkaline pesticides and fertilizers.

Carbamate agent:

① befentil: 50% befentil wettable powder. It has preventive and therapeutic effect and is effective for diseases caused by R-hizoctonia solani. It can be mixed with many kinds of pesticides and fertilizers.

② free Ryder: 50% of the wet powder is a systematic pesticide. It has osmotic migration, and after dispersion, it can be absorbed and migrated to the leaves through root system, and the dilution multiple is too high or the times of application is too close, which is easy to develop drug resistance. This agent is a widely effective fungicide and has the effect of preventing and treating many kinds of diseases. after spreading, it can migrate upward from the root system to control the diseases caused by PhytoPhthoua sPP. When this agent is applied, it should not be mixed with fertilizer or plant growth regulator. Improper dilution times or frequent application may inhibit the growth of new buds.