The seedlings of the early seedlings are thin but not hollow, the leaves are small and thick, and the leaves are dark green. This kind of tomato seedlings can obtain high yield in the later period; on the contrary, the seedling stage has sufficient fertilizer and water, the seedling stems are thick and hollow, the leaves are large and tender, and the leaf color is relatively Pale, such tomato seedlings are leggy seedlings, but not strong, often the first to third ear fruit plant fruit set rate is low, the fruit is small, resulting in low early yield. The main reason for causing tomato seedlings to grow seedlings is excessive growth of nutrients at the seedling stage, which affects reproductive growth and causes vegetative and reproductive growth imbalances. Tomato seedling management should grasp the word “control†in order to increase the output, especially to increase the previous production. In addition to controlling water and fertilizer, it should also pay attention to temperature control. Found that there are signs of leggy plants, should promptly regulate the temperature inside the shed to avoid excessive temperature. At the same time, pull up the temperature difference between day and night, temperature difference should be at 10 °C, or with a mesylate and other plant growth regulators control Wang, pay attention to the liquid concentration can not be too large.
Nasopharyngeal swabs are actually long cotton swabs, similar to long sterile cotton swabs, and their main function is to take nasopharyngeal secretions for Bacterial Culture and drug sensitivity tests. Bacterial culture and drug sensitivity test are used to select and clarify the source of infection in the nasopharynx and microorganisms in the nasopharynx, and then drug sensitivity test can be done to determine which drugs are sensitive, so that sensitive drugs can be selected for treatment, so as to achieve better results Therefore, the nasopharyngeal Swab is actually a cotton swab for tissue.
Nasopharyngeal Swab,Viral Nasopharyngeal Swabs,Nasopharyngeal Dry Flocked Swab,Nasopharyngeal Swab Stick Jiangsu HXRT MD Co.,Ltd , https://www.jshxrtmed.com
Tomato seedling management should grasp "control" word
After the tomato colonization, some vegetable farmers suspected that the seedlings were growing weaker, which increased the supply of fertilizer and water during the seedling stage, resulting in serious tomato growth. The 1st to 2nd spikes were obviously smaller, and the malformed fruits were more. Therefore, tomato seedlings should be watered or watered as little as possible and not fertilized. When the first fruit of the tomato has the size of a walnut, an appropriate amount of ternary high-potassium compound fertilizer is applied to promote fruit enlargement. After two times of high-potash fertilization, nitrogen, phosphorus and potassium balance fertilizers were applied to avoid the low potassium content of soil nitrogen and affect plant growth.