Some large cherries were picked from May to June, and the management of many cherries after harvesting in summer is easy to be overlooked. There are also some mistakes in the management of fertilization of summer cherries.

Mistake 1: No fertilization is needed after the big cherry is picked

Usually, big cherries pay special attention to fertilization in spring and autumn. It is believed that spring fertilization can promote flower and fruit stability, while autumn fertilization can protect the nutritional reserves of big cherry overwintering. In fact, fertilization of large cherries in summer is also particularly important. At this time, it is an important period for cherry flower bud differentiation and pest control. Summer fertilization can quickly restore tree vigor, promote flower bud differentiation, increase tree storage nutrients, and effectively control pests and diseases. The key to high production and stable production. Therefore, top dressing should be done immediately after cherry picking, so that the nutrients consumed by the growth of the tree can be replenished in time to meet the nutrient requirements of flower bud formation and later growth stages.

Mistake 2: Large amounts of nitrogen fertilizer applied to large cherries after fruit picking

Many fruit farmers mistakenly believe that due to the rapid effect of nitrogen fertilizer, they can quickly restore tree vigor, so a large amount of nitrogen fertilizer should be applied after picking. However, nitrogen fertilizer is a double-edged sword. Especially in summer, tree metabolism is strong. Excessive application of nitrogen fertilizer will cause the tree to grow madly. Spring shoots cannot be stopped in time, which is not suitable for the formation of flower buds. In fact, it is better to apply a small amount of fast-acting nitrogen after fruit picking, and attention should be paid to the application of phosphate fertilizer. After the fruit is harvested, 1.5 kg of urea and 1 kg of diammonium phosphate are used for every 100 kg of fruit. Trees with excessive tree vigor and less fruit can be used without or with diammonium phosphate.

Mistake 3: Fertilization and nutrition are also needed for unproductive trees

Many fruit farmers mistakenly believe that fruit trees that do not produce fruit in a young year are due to lack of nutrients, so they must be fertilized with the fruit trees in summer. In fact, most of the fruit trees in the young year are caused by imbalanced nutrition. If you continue to apply fertilizer in summer, it will continue to increase the imbalance between vegetative and reproductive growth, which is not conducive to the formation of flower buds. It is the key to control nutrient balance according to tree vigor. Mistake 4: Applying fertilization in summer can reduce watering

At present, many orchards have used drip irrigation systems, and the amount of water-soluble quick-release fertilizers is increasing, which provides convenience for production management. However, the use of water-soluble fertilizer is not equivalent to reducing the amount of water. In June, the precipitation is insufficient, the temperature is high, and the soil moisture evaporation is large. If you do not add water in time after using fertilization, it is easy to cause fertilizer damage. Therefore, special attention should be paid to water management after fertilizing.

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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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