Scraped bark In the rough bark, warped bark and cracks of fruit trees, there are often many kinds of pests lurking, such as pear heartworm, apple leaf roller moth, jujube armyworm, and pear star caterpillar. Before the fruit trees sprout in early spring, thoroughly scrape off the rough bark on the branches (especially the branches) and cut the cuts and warp bark. It is advisable to scrape off the light brown skin to see green but not white; when scraping, spread a piece of plastic sheet under the tree to collect the scraped bark and debris, and bury it in a concentrated way or burn it. For fruit trees with rot disease and dry blight, after scraping their skins, they should be protected by the general tree guard.
Tree planing plate in early spring is not only an important measure to improve the soil and increase the production of fruit trees, but also an effective method to eliminate overwintering pests. After deep planing, you can choose to use Genshitong and fungicide for watering, which can promote the effective ingredients of pesticides to kill the root pests of fruit trees.
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[Sample requirements]
The collected nasopharyngeal swab samples should be transported at 2°C to 8°C and sent for inspection immediately, and the sample delivery and storage time should not exceed 48 hours.
[Testing method]
1. Before sampling, mark the relevant sample information on the label of the sampling tube.
2. According to different sampling requirements, use a sampling swab to sample in the nasopharynx.
3. The specific sampling methods are as follows:
a) Nasal swab: Gently insert the swab head into the nasal palate, stay for a while and then slowly turn to exit. Wipe the other nostril with another swab, immerse the swab head in the sampling solution, and discard the tail.
b) Pharyngeal swab: Wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with a swab, also immerse the swab head in the sampling solution, and discard the tail.
4. Quickly put the swab into the sampling tube.
5. Break the part of the sampling swab higher than the sampling tube, and tighten the tube cover.
6. Freshly collected clinical specimens should be transported to the laboratory within 48 hours at 2°C to 8°C.
[Explanation of test results]
After the sample is collected, the sampling solution turns slightly yellow, which will not affect the nucleic acid test result.
[Limitations of the test method]
1. For samples that are seriously contaminated due to improper storage after collection, the final test results will be affected.
2. If the sample is not stored at the specified temperature, the final test result will be affected.
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