Winter date harvest method should have
Winter jujube harvesting is different from other dry jujube varieties, and can not adopt the rod vibration method, and can not adopt the method of ethephon dropping. Because the jujube fruit stem vibration harvest, will cause a lot of crushed winter fruit, especially fruit skin thin, crisp texture, even if there is no damage, it is not easy to store and long-distance transport; with ethephon reminded to harvest , Will cause a large number of dehydration of winter jujube fruit before harvest, soft flesh, skin folds, can not maintain the original crisp texture of winter jujube, reduce commodity value. Therefore, manual picking must be adopted. Dongzao artificial harvest, but also in the "light pick, light release, avoid crowded, fall injury and maintain the integrity of the fruit" principle. The specific method of harvesting is as follows: First, it is necessary to prepare a high stool in advance, and design a place where it can hang a jujube container; secondly, prepare a container for picking fruit that can be carried along with it. The inner wall of the container must be smooth, Thornless and soft. Generally do not use bags, bags and other soft fruit, can be used fruit basket, fruit box, fruit plate, etc., the inner wall needs to use soft goods bedding; three to carry Shu fruit cut. When picking, do not pull the fruit by hand, should be hand-pulled by the date hanging, the other hand holding the base of the jujube fruit up. It is best to use one hand to hold the date, and the other hand to cut the fruit and fruit from the fruit handle and jujube hanging connection, so as to avoid friction between the fruit and fruit, but also to maintain the integrity of the fruit. Winter dates should be avoided when the morning dew does not dry, because picking fruit at this time is easy to cause cracks in the handle. 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. Urine Reagent Strips,Urine Test Strip,Urine Sugar Strip Test,Visual Urine Analysis Strips Jilin Sinoscience Technology Co. LTD , https://www.contoryinstruments.com
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.