With the continuous improvement of agricultural facilities, soilless planting techniques are also expanding. However, some vegetable farmers may have poor knowledge of the quality of the crops they produce because they do not have comprehensive knowledge. . Today, Xiaobian talks about the technical points of soilless cultivation of cucumber.
1. Seeds: Select those with strong disease resistance, full seeds, strong resistance, and good varieties, which is conducive to the healthy growth of cucumber. Before planting, the seeds should be soaked in warm water of 55 degrees for 20 minutes, then 8% formaldehyde is used to prepare 100 times solution. After soaking the liquid into the seed for half an hour, rinse with water for two or three times. After washing, soak in warm water for six hours, then pour the seeds into wet gauze soaked with hot water at 100 °C, cover with a layer of moist gauze, and put in a 28-degree incubator. The germination is carried out, and the seeds can be germinated after waiting for thirty-six hours.
2, base selection: In order to facilitate the growth of cucumber, 30-50c black seedling tray should be used when planting seedlings, and disinfection and substrate should be carried out at the same time.
3. Sowing: After the seeds are white, they can be sown. The previous day, the prepared substrate needs to be placed in the seedling tray and then immersed in 500 times with carbendazim. You can choose the method of on-demand, soak 18 seeds per plate, deepen the hole of 0.5 cm on the substrate, then use the tweezers to pick up the seeds and put them in the holes. Then cover the substrate on the seed and pour it with a small amount of water. It can be unearthed in three or four days under suitable temperature conditions.
4, seedling management
a, the prevention and control of nutrient solution: to control the supply of nutrient solution and water, the temperature is maintained at 20-28 degrees, the maximum temperature does not exceed 35 degrees, the minimum is not less than 10 degrees, while maintaining the temperature difference between day and night of 5-8 degrees, air The humidity is around 80% and the light is kept.
b. Management of pests and diseases: seedling stage is very fragile, so you can choose integrated pest control. When a real leaf is sprayed with trichlorfon 300 times liquid plus lovefuling, spray the Wanling to accelerate the ketone after 3 days of the first control. Using 1500 times liquid leaching to control blight, and using agricultural streptomycin and copper hydroxide to prevent root blight.
5. Seedling planting and cultivation management
a. Move seedlings and planting: It is very important to transplant seedlings at the right time. When the melon seedlings grow to two leaves and one heart, the seedlings are transplanted. One day before the seedlings are sprayed, the carbendazim 500 times solution is sprayed once, and the transplanted seedlings should be gently taken to prevent injury. Roots, planted at a distance of 35 cm for later ventilation.
b. Moisture management: After 5-7 days of planting, the seedling water is poured once. After the plant growth, substrate conditions and climatic conditions, the number of watering is determined. Generally, watering is performed once a week. After the fruit is set, watering should be carried out on the sunny afternoon and afternoon. On cloudy days, you can drink less water or not, depending on the situation.
c. Nutrient management: The supply of nutrients is applied in small quantities and in stages. Generally, the topdressing is started 20 days after the planting, and the dosage is 10 g/plant of the organic eco-type soilless special fertilizer. After each half-month, the topdressing was carried out and the fertilization was stopped one month before the pulling.
d. Pest control: The disease mainly pays attention to the prevention and control of downy mildew, gray mold, white powder and bacterial angular leaf spot. It is necessary to pay attention to observation during the period when the temperature difference between day and night is large and the climate change is severe. Pest control can suspend the yellow plate in the greenhouse, which can effectively kill the main pests such as aphids, whitefly, and Liriomyza sativae, and determine whether to use the drugs according to the number of insects on the board. Chemical control is preferred to use the dust method and the smoking method; pay attention to the rotation of drugs, and rationally mix; strictly control the safety interval of pesticides.
6, harvesting
In order to obtain higher early yield, the tender melon should be harvested in time, especially the root melon. If the harvest is too late, it will easily cause the melon and inhibit the subsequent melon growth. The horizontal diameter is as long as 6-8 cm, and it can be harvested when it is pressed with no nails. In the late stage of melon, the growth of the plant gradually declines, and the harvest can be appropriately delayed. The old ripe melon is generally arranged to stay in the late growth stage, and it is harvested after full maturity, which is convenient for long-term storage.
Virus Specimen Collection Tube
Inspection principle:
It can perform protein denaturation on fresh clinical virus samples to inactivate the virus, prevent secondary transmission of infection, and ensure the safety of transportation and testing personnel.
♣.Structural composition: Combination of cotton swab and transport medium (VTM).
♣. Product requirements:
The product should be airtight, avoid high temperature, avoid direct sunlight storage. It should be used in a clean, hygienic, pollution-free, and temperature-friendly environment.
♣, Storage conditions and validity period:
â‘ , the product should be stored in a clean, dry and ventilated environment,
②, the temperature is 5℃-35℃;
â‘¢, relative humidity <85%RH;
â‘£, product shelf life: 12 months.
♣. How to use
â‘ Before sampling, mark relevant information on the label of the sampling tube.
â‘¡. Sampling with the corresponding cotton swabs.
â‘¢ After the collection is completed, quickly put the cotton swab into the collection tube, break the part higher than the sampling tube, and tighten the tube cover.
â‘£. For the specific sampling method, please refer to the following:
a) Nasal swab Gently insert the sampling head into the nasal cavity, stop for a while and then slowly rotate to exit, immerse the collected specimen in the Xiangxiang solution, break the excess part and discard it, and tighten the sampling tube cover.
b) Pharyngeal swab: Wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with the sampling head, immerse the collected specimen in the sampling solution, break off the excess part and discard it, and tighten the cap of the sampling tube.
c), Mycoplasma Chlamydia, Ureaplasma specimen collection
Male: Insert the sampling head into the urethra about 2cm and rotate, stay for a while and then exit, and immerse the collected specimen in the sampling solution.
Female: Wipe the mucus of the cervical orifice, insert the sampling tip into the cervical canal for 1-2 cm for sampling, immerse the collected specimen in the sampling solution, break off the excess part and discard it, and tighten the cap of the sampling tube.
♣. Precautions
1. After the virus is collected, the disposable sampling swab should be completely inserted into the preservation solution, so that the virus can be retained to the greatest extent possible.
â‘¡ The collected specimens must be sent for inspection in time.
â‘¢. It is forbidden to use products with damaged packaging and expired validity period to prevent pollution.
This single-use Virus Sampling Tube is used for in vitro diagnosis. It cannot be used for human or animal oral or external use. If swallowed, it may cause serious events; it is irritating to eyes and skin. If it is not splashed into the eyes, rinse with water.
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Jilin Sinoscience Technology Co. LTD , https://www.contoryinstruments.com