Irrigation and fertilization in potato cultivation are two important steps that directly affect the yield and quality of potato harvest. If you want to get high yields, you need to pay attention to the following points:
1. Only use white and black liquid fertilizer, no organic fertilizer, no spray fertilizer.
2. White manure and black manure cannot be mixed in the fertilizer tank at the same time. Apply white fertilizer first, then apply black fertilizer. 60 kg per barrel.
3. Fertilizer should be dissolved in the fertilization tank to be more than 10 times more water. Do not pour all the fertilizer into the fertilization barrel at the same time.
4. When the soil is dry, the fertilization time is completed within one to two hours. Drip the water for 10 minutes first, then make the pipe full of water and start fertilizing. After the fertilization is completed, continue to drip for 20 minutes, and drain all the fertilizer in the pipe. Otherwise, it may grow moss at the dripper and block the dripper.
5. When the soil is not dehydrated or rains continuously, fertilization is carried out as it is. The water is first dripped for 10 minutes, and the fertilization is started. The fertilization time should be controlled within 20-30 minutes. After the fertilization is completed, the water is not dripped.
6. The root distribution of potato is mainly about 25 cm below the soil layer. Drip irrigation mainly wets the root layer, so always check the water condition around the root system. Dig the soil around the root system and grasp the soil by hand. It can be kneaded into a mass to indicate that the water is sufficient. If it is not enough to indicate that it is not enough water, start drip irrigation. Generally, the drip irrigation time is 1.5-2.0 hours, and it is better to use a small amount as many times until the root layer is wet. Each dripper has a water output of 1.4 kg in 1 hour.
7. It is very important to grasp the time of fertilization. If the fertilization time is too long, the fertilizer will be washed under the root layer and will not be absorbed, resulting in waste of fertilizer and production.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
[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.
Vtm Sampling Tube With Swab,Disposable Collection Tube Of Virus Samples,Hi Media Vtm Kit,Amylase Sample Collection Tube
Jilin Sinoscience Technology Co. LTD , https://www.jilinsinoscience.com