Many fruit growers do not pay attention to post-harvest management after harvesting grapes in greenhouses, and still carry out extensive management. As a result, to a large extent, the yield of grapes in the following year will be reduced by 10%-20%. The fine management of grapes after harvesting must be mastered. "Four elements" can achieve a multiplier effect with half the effort. Apply after-fruit fertilizer in combination with actual conditions. After the fruit is harvested, timely supplementation of nutrients and restoration of tree vigor is the key. After the fruit is applied, fertilizer can play an important regulatory role. After the fruit is applied, the fertilizer should be fertilized according to the growth of the plant and the standard of about 12 kg of quick-acting nitrogen fertilizer per acre. At the same time, spray 0.3% urea solution for 2-3 consecutive sprays to promote the restoration of normal growth of the tree. If the tree is growing vigorously, use less to prevent excessive growth of new shoots. Cultivation and weeding clear the garden in time. In August, the orchard is prone to overgrown weeds, so after picking the fruit, it must be cultivated and weeded in time, and at the same time deep plowing. Starting from August, grapes often face the threat of autumn drought, so pay attention to drought-resistant irrigation. If drought occurs continuously for 15-20 days, furrow irrigation should be used in time to keep the field water holding capacity not less than 60%. In addition, the orchard should be cleaned up in good time, and the diseased shoots, diseased leaves, diseased fruits, dead branches and debris should be taken out of the orchard and buried deep or burned in time to reduce the source of disease and insects, and then spray the whole orchard The "General of the Tree Guard" disinfects and sterilizes to prevent the overwintering virus from multiplying on the trees. Continue to do a good job in pest control. After the fruit is harvested, the fruit trees are susceptible to fungi, causing downy mildew, black pox, rust, etc., especially from August to September, which is the peak period for downy mildew. The rainy years are particularly serious. Therefore, the grapes must continue to be harvested. Pay attention to the prevention and treatment of diseases. For disease prevention and control, a mixture of "new high-lipid film + fungicide + insecticide" solution can be used to enhance the efficacy. Fruit growers choose low-toxic and pollution-free pesticides as much as possible to avoid long-term pesticide residues. In addition, we must strictly prevent pests such as scarabs, grape hawk moths, and two-star leafhoppers. Prune the tree carefully. After the grapes are picked, careful pruning and correcting the tree shape are particularly important. Pruning must first do a good job of topping and cutting branches, try to remove tendrils and thin branches, and remove severely diseased leaves to reduce nutrient consumption, adjust the nutrient flow direction of the tree body, and promote full and mature bud eyes. The second is to do a good job of supporting the three branches of fruiting branches, vegetative branches and renewing branches, and deal with the phenomenon of unplanned secondary results in time. To protect the wound after pruning the fruit tree, apply grease to heal the wound and antiseptic film to seal the wound in time to prevent germs from infecting the wound, thereby protecting the healthy healing of the wound. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. 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. 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.