Answer: 1. A strict plant quarantine system is implemented. Disease-free scions and rootstocks are used when raising seedlings, and diseased seedlings are removed and burned. 2, the bark cut "door" shape, coated with 500,000 units of tetracycline, or 1.5 million units of oxytetracycline, or 1.5 million units of streptomycin, and then wrapped with a plastic film, can reduce the incidence of disease. It is also possible to dig a pit from the east, west, south and north below the canopy, find a root of 0.5 to 1 cm, and cut off and insert a bottle containing tetracycline, oxytetracycline, streptomycin, or griseofulvin 150 to 200 ppm. In the seal buried. In the second half of April, late June, and early August, prevention and treatment can achieve significant results.
Water Test Strips 15 Parameters
Detection method:
visual
Operation method:
1. Visual inspection: Immerse the test area of the test paper into the fully stirred fresh drinking water, and take it out immediately;
2. Put the edge of the strip against the edge of the container to remove excess water samples;
3. Compare the test strip with the colorimetric table on the bottle label, and record the test result in the determination time: 0 ~ 60 seconds. Use visual.
Storage conditions:
The test paper should be stored in room temperature, dry environment, away from a variety of chemical reagent environment, avoid direct sunlight. This product does not need to be refrigerated (if it is stored for a long time, it should be restored to room temperature and opened for use).
Water Test Strips 15 Parameters,Water Quality Test Kit,Professional Water Test Kit,Drinking Water Test Strips
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