A two- or three-year-old branch that appears strong due to the presence of many flower buds might actually be weak. If it grows on an annual Wang branch, it can develop into a fruitful branch in the second year, provided there's sufficient light, proper leaf protection, and balanced fertilization. Similarly, an annual imaginary branch with multiple cuts on a weak branch can stimulate growth on a thin, weak stem, which may also form clusters of flowers by the next season. Therefore, the strength or weakness of a flowering branch is not always obvious at first glance.
An annual Wang branch is not only more developed but also significantly thicker than a weak branch. It has a much higher number of xylem vessels, allowing for better transport of water and inorganic nutrients from the soil. This makes it more capable of supporting fruit development. Retracting buds on such branches isn’t advisable because the process focuses nutrients on fewer areas, leading to longer shoots that consume more energy and leave less for fruit accumulation.
On the other hand, annual weak branches are slender and poorly developed. They lack sufficient lignification due to their fine structure and underdeveloped organization. Their xylem vessel count is much lower, making them less efficient at nutrient transport. If not pruned, leaving all the buds results in scattered nutrition, with each bud receiving only a small amount of resources, leading to smaller fruits. Pruning these weak branches helps reduce the "population" and concentrate nutrients, promoting better fruiting. In particularly weak trees, where every branch is full of flowers, it’s crucial to prune the weakest bunches to avoid overloading the tree.
When it comes to pruning weak flower clusters, the approach needs to be more precise. The amount of retraction depends on the branch type and its condition. For example, branches growing inward should be cut back more, while those on the outer side should be pruned lightly or not at all. This careful adjustment ensures the plant remains balanced and productive.
Reagent Strips For Urinalysis
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
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