The warmer weather in spring, the increase in air humidity, and the artificial factors such as fertilization can easily cause the strawberry to grow and affect the yield. Prosperous reason Watering too much strawberry absorbs too much water, the vegetative growth is greatly enhanced, it starts to grow, consumes photosynthetic nutrients and mineral nutrients, and the nutrients distributed to fruits, roots and flower buds are relatively reduced, the fruit is difficult to grow, flower buds are difficult to form, Root growth is inhibited and the flowering branches are elongated at later stages. Too much nitrogen fertilizer If too much nitrogen is applied, the increase in nitrogen is caused by the increase in nitrogen, the color is green, the plant is soft, and it is easily damaged by humans, which further causes various diseases. The stem is weak, the petiole becomes thinner, and it is easy to fall; the excessive number of leaves will make the ventilation and light transmission worse, and it is easy for the middle and lower leaves to prematurely decay. The temperature is higher during the day and the temperature is required to be 23 to 25 ° C and 8 to 10 ° C during the night. This is beneficial to flowering and fertilization and fertilization. Spring temperature began to rise, plant growth rate increased, combined with sufficient fertilizer, just as the summer temperature is high, the strawberry seedling grows fast, causing it to grow. The growth regulator uses irrational gibberellin to make the plant grow long, the petiole is long, and especially the inflorescence will stretch very long. Solution The most fundamental reason for Wang Chang is the excess of fertilizer and water. A large amount of base fertilizer has been applied before planting. If the water is not controlled, the plant will absorb a large amount of nitrogen, and the result will be prosperous. So the simplest and straightforward way is to control the moisture and reduce the quick-acting nitrogen fertilizer. Increase ventilation to reduce the temperature inside the shed. At this stage, it is necessary to pull the air vent on sunny days to increase the ventilation volume, effectively reduce the temperature inside the shed, especially the night temperature, and control the temperature within a reasonable range. If the night temperature is too high, the air vent may not be closed. At the same time of chemical control, a low concentration of potassium dihydrogen phosphate can be added to increase the thickness of the leaves. During the flowering period, do not spray potassium dihydrogen phosphate, and the amount of phosphorus and potassium fertilizer can be applied in an appropriate amount, and the multiple is controlled at 300 to 500 times. Thereby controlling stem and leaf growth. If the amount of side buds is large, it should be removed in time to avoid excessive side buds to waste nutrients. Generally, 1 to 2 side buds per plant can be left. Strawberries that have matured on the plants should be removed in time to avoid affecting the subsequent strawberry growth. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Strawberries with dense plants should be timely removed from old leaves, diseased leaves and overly dense overlapping leaves to create a ventilated and light-transparent environment for strawberry plants to facilitate their growth, and to avoid the occurrence of aphids and other hazards. . Hematology analyzer is also called clinical blood cell analyzer, blood cell analyzer, blood cell analyzer, blood cell counter. The blood analyzer not only improves the accuracy of the experimental results, but also provides many experimental indicators, which play an important role in the diagnosis and differential diagnosis of diseases. Hematology analyzer is one of the most widely used instruments in hospital clinical testing. Automation in Hematology,Automated Hematology Analyzer,Hematology Analyzer Instrument,Hematology Analyzer Product Jilin Sinoscience Technology Co. LTD , https://www.contoryinstruments.com
Test items
Blood cell test refers to routine blood test, which is manual operation and counting under the microscope at first. It includes red blood cell, hemoglobin, white blood cell count and its classification, platelet count, etc. There are more than 20 items.
clinical significance
1. The blood analyzer is mainly used to detect various blood cell counts, white blood cell classification and hemoglobin content.
2. Hematocrit: obtained by multiplying the average volume of red blood cells by the red blood cell count.
3. Red blood cell distribution width: represents the degree of consistency of red blood cell size. When the red blood cell size is uneven, the red blood cell distribution width value increases, such as various types of nutritional deficiency anemia.
4. The three average indices of red blood cells are used to identify the type of anemia.
(1) The average hemoglobin content of red blood cells: increased in megaloblastic anemia, decreased in iron deficiency anemia, chronic blood loss anemia, uremia, chronic inflammation.
(2) Mean volume of red blood cells: increase in hemolytic anemia and megaloblastic anemia; decrease in severe iron deficiency anemia and hereditary spherocytosis.
(3) The average red blood cell hemoglobin concentration: decrease in chronic blood loss anemia, iron deficiency anemia; various diseases can be in the normal range. In megaloblastic anemia, the mean red blood cell volume increases, the mean red blood cell hemoglobin amount increases, the mean red blood cell hemoglobin concentration is normal, and the red blood cell distribution width increases.
5. Average platelet volume: the average volume of each platelet, the size of platelets is related to its function.
(1) Increased: seen in patients with idiopathic thrombocytopenic purpura, edema and proteinuria in late pregnancy.
(2) Decreased: seen in non-immune platelet destruction, aplastic anemia, thrombocytopenia repeated infection syndrome, chronic myeloid leukemia, etc.