1. Chemical treatment: Ethephon with a concentration of 2.010-4 (with 40% ethephon 250g watered with 50kg) at the seedling stage, or sprayed with a 0.01% Naphthylacetate solution in a 2-3 leaf cucumber true leaf stage , can significantly increase the number of female flowers. At the same time, in conjunction with artificial pollination, generally cucumber can increase production by 17% to 34%. 2. Sunshade treatment: Cucumber is a short-day crop, shortening light can increase female flowers. The specific approach is: before the formation of cucumber flowers, the use of black paper, straw and other objects on the scaffold shade, the daily sunshine control in 9 hours. 3. Increase water and nitrogen fertilizers: Practice has shown that cucumbers grown in 80% humidity are more than twice as productive as soils with 40% humidity. Providing sufficient nitrogen fertilizer in the early development of cucumber can also increase the effective amount of female flowers.

Vtm Sampling Tube With Swab

[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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