ask:
What is the grafting process of eggplant? What links do you need to pay attention to? When the rootstock stem is 3-5 mm thick and the scion grows to 5-7 true leaves, it is the best time to marry. The grafting site is generally on the section between the 2nd and 3rd true leaves of the rootstock, so pay special attention to the length and thickness of the rootstock section. Eggplant grafting is generally carried out by splicing. The splicing method is carried out when the rootstock seedlings have 5-6 true leaves. First, the rootstock seedlings are kept in two true leaves, and the stems and leaves of the above part are cut off at one time, and then a deep cut of 1-1.5 cm is cut downward from the center line of the stem at the incision. Subsequently, the scion is kept 1 leaf 1 heart, cut into a wedge shape with a slope of 1-1.5 cm (according to the cutting of the rootstock), and immediately inserted into the incision of the rootstock, so that the slits are aligned and tightly fixed with a grafting clip.
The operator's hand and grafting tool should be disinfected with alcohol or potassium permanganate solution several times during the grafting process to avoid cross infection of the bacteria. At the same time, it should be noted that the hands and blades should be in contact with the incision after drying, otherwise it is difficult to heal after the incision is wet or liquid. In the first 3 days after grafting, the relative humidity of the air should be kept at about 90% to promote healing between the rootstock and the scion as soon as possible. After 3 days, the temperature should be lowered in time to prevent the growth of the bacteria on the wound. When the humidity is insufficient during the healing period of the wound, the water cannot be sprayed directly, and the ground water supply can be used to increase the humidity. The temperature requires 23-26 ° C during the day and 17-20 ° C during the night. Generally 6-8 days, grafted eggplant can pass the graft healing period.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Urinalysis test strips refer to test strips that test for bilirubin, urobilinogen, ketone bodies, ascorbic acid, glucose, protein (albumin), blood cells, PH, etc. in urine.
Detection principle
1. pH: The pH value in the range of 5-9 is measured by the pH indicator, and the pH value of the fresh urine of a normal person is between 5-7.
2. Nitrite: The reaction is based on the reduction of nitrate to nitrite by Gram-positive bacteria in the urine. The nitrite reacts with p-aminobenzenesulfonic acid to form diazonium compounds, which are then combined with N-(1-naphthalene) )-3 aminopropanesulfonate combined with a pink color.
3. Glucose: According to the reaction principle of glucose oxidase, glucose oxidase specifically oxidizes glucose to generate glucuronic acid and hydrogen peroxide. Under the action of hydrogen peroxide, hydrogen peroxide oxidizes the indicator and turns color. .
Classification
Urinalysis test strips are divided into visual series and machine series. The visual inspection series is divided into several models according to different inspection items; the machine inspection series is divided into several models according to different applicable instruments.
1. Classification by measurement method
1) Visual inspection series
When observing the result, compare the color with the standard color code within the time specified on the color code, judge and read the result.
2) Machine test series.
For instrument operation, refer to the instruction manual of the Urine Analyzer used.
2. According to the number of measurement items
There are single-item, 2-item, 4-item and multiple test strips. Currently, 10-item or 11-item multiple test strips are most commonly used in hospitals.
3. Classification by structure
Urinalysis test strips with single-layer membrane structure and multi-layer membrane structure.
Urine Reagent Strips,Urine Test Strip,Urine Sugar Strip Test,Visual Urine Analysis Strips
Jilin Sinoscience Technology Co. LTD , https://www.contoryinstruments.com