With the increase in the number of years of cultivation in greenhouses, diseases such as wilt, root rot, canker, and root-knot nematode become increasingly serious. The problems of dead seedlings and dead trees have severely restricted the growth and development of crops, affecting yield and quality. great. Practice has long confirmed that the use of "high temperature stuffy sheds" can effectively eliminate germs, kill eggs, remove weeds, improve soil, and enhance soil strength. It is a good way to effectively alleviate continuous cropping obstacles and control root knot nematode damage. However, there are also many farmers who report that the greenhouse in my house has also been subjected to high temperature and suffocation, but the effect of controlling the damage is also normal. Why is this? The reason is that the quality of high-temperature stuffy sheds needs to be improved or improved.

In order to achieve the desired effect of high temperature, the following points must be met:

1, completely clear the shed. After the summer crops are harvested, the residues, leaves, roots, and root weeds are removed in a timely manner to eradicate field weeds and bring them out of the shed to be buried or burned.

2, artificial deep turning. At least one millet, keep the living soil restored to a depth of more than 30 cm.

3, pick up net residual roots. When you turn to the ground, carefully pick up root nodules parasitic to root knot nematodes.

4, layered fertilization. In combination with deep turning, 5000 kg of farmyard manure such as chicken manure, cow dung, sheep manure, and pig manure is applied in two layers per acre (bottom layer, middle layer).

5. Site preparation and ditching. After the end of the deep plowing, use a rotary cultivator and other machinery to level and thin the ground, and in the direction of the irrigator, open a diversion trench about 30 cm deep.

6, cover film, fill enough water. Can be used to cover the surface with old shed film, or new ground film, especially the column, front porch part must be tightly covered. Then flooding irrigation (first under the film, after the film), and must be filled, otherwise affect the boring effect.

7, cover tight film. Greenhouse vents and other parts must be tightened, and carefully inspect the shed face and seal all cracks with tape to facilitate insulation.

8, clean the film. Use mops, sprayers, etc. to clean the dust on the surface of the house to increase the transparency of the film to facilitate warming.

9, overnight covered with straw (quilts). In order to reduce the nighttime temperature loss, in order to keep the temperature rising, it is better to cover the straw or quilt curtain at night.

10, increase the temperature. The key to high temperature stuffy sheds is an orderly increase in ground temperature. As long as the relative humidity in the field reaches 85% or more, the temperature in the shed reaches 60°C or more, and the temperature in the soil at 20 cm exceeds 55°C, the diseases such as root-knot nematode, wilt, root rot, and disease can be effectively killed. Insect pests, aphids, whiteflies, red spiders, spotted insects, and weeds. When the temperature is high, the ground temperature must be observed in a timely manner, as long as the ground temperature reaches 55°C for 3 consecutive days, and the normal high temperature drowsy time is appropriate for about 15 days.

11, formula fertilization. After the dwelling shed is over, Kisheh removes the coverings from the ground. Generally, after one week of drying, the site preparation and fertilization are started. Since high temperatures can also kill beneficial microorganisms, bio-organic fertilizers, lygosperm and synergistic fungus fertilizers, and soil conditioners such as “silica-calcium-potassium” should be added.

Hematology Analyzer

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.
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.

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