Daoer in planting vegetables
Before and after vegetable planting, the environmental conditions of the nursery shed and the ordinary shed are obviously different, and the seedlings before and after planting are more damaged, which is a good opportunity for pathogen infection. Moreover, after the early spring vegetables are planted, the speed of slowing down the seedlings directly determines the time and yield of the early spring vegetables on the market. How to do a good job of planting is the basis for the efficiency of vegetable production. Ridging and planting M-shaped ridges are 20 cm high. It is better for seedlings to be planted on the shoulders of the ridges, which not only helps to increase the ground temperature and promote the growth of the root system, but also helps to improve the permeability of the soil and increase the activity of the root system. Planting water If it is furrow watering, it should be watered in advance, and the seedlings should be planted above the water line to avoid the spread of pathogens with water and reduce the occurrence of rhizome diseases. If it is drip irrigation, the drip irrigation belt should be close to the planting hole. The first water can only moisten the area around the planting hole to reduce the influence of water on ventilation and ground temperature. Colonization method Plant as shallow as possible, and planting should be exposed. If the seedlings are taller, they can be buried in the soil at an angle. To take seedlings from plug trays, you can squeeze the holes first to facilitate the taking of seedlings and reduce the damage to the stalks when taking seedlings. ******Choosing continuous sunny days is conducive to rapid slowing down of seedlings and reducing diseases. Colonization density The planting density of different vegetables is different. Take tomatoes as an example. In Shouguang, Shandong, 2200～2500 plants per mu are usually planted in greenhouses. Varieties with single stem pruning, strong growth, large leaves, and more fruits are reasonably sparsely planted, weak growth, small leaves, and fruit retention. Few varieties are densely planted. If the row spacing is 1.35 meters, the plant spacing is generally 41 to 42 cm. In some areas of Hebei, Henan and other places, there are only 3 ears of tomatoes in early spring, and the planting density is generally above 3,000. Dip root treatment The recommended formula for root diseases: 30 kg of water with 20 ml of hymexazol, a bag of 968 Dip Genbao, and 30 ml of Apollo 963 chitin. Nematode recommended formula: 30 kg of water plus 20 ml of abamectin, 30 ml of Apollo 963 chitin, and Paecilomyces lilacinus biological agent. Planting 6-10 hours after dipping the roots, in addition to dipping the roots, you can also apply biological inoculants to the holes. 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 1. urine analysis strip is dry chemical reaction principle, the human body in the urine of white blood cells, proteins, ph, urine specific gravity, ketone body, bilirubin, occult blood, nitrite, uric bravery, glucose, creatinine, vitamin C, calcium within ten three indexes such as qualitative and semi-quantitative detection.
Rational use of urine analysis strip has played a very good role in our timely detection of disease and timely treatment
[Test Principle]
Urobilinogen:Urobilinogen with diazonium salt produce red violet dyes in strong acid medium.
Bilirubin:The direct bilirubin with dichlorobenzene diazonium produce azo dyes in acid medium.
Ketone:The acetoacetic acid and sodium nitroprusside cause reaction in alkaline medium,which produces red violet compound.
Blood:Hemoglobin acts as peroxidase. It can cause peroxidase release neo-ecotypes oxide (O).(O) oxidizes the indicator and make the color change subsequently.
Protein:It is based on a specific pH indicator attracted by cation on protein molecule,the indicator further ionized and make the color change.This phenomenon is called protein-error-of -indicator principle.
Nitrite:Nitrite and aromatic amine are diazotized to form a diazonium compound.The diazonium compound reacts with tetrahydrobenzo(h)quinolin 3-phenol produce the red azo dye.
Leukocyte:Pyrrole amino acid ester produce free phenol under the hydrolysis of esterase in neutrophile granulocyte,the free phenol couple with phenyl diazonium salt produce purple azo dyes.
Glucose:The glucose oxidized by glucose oxidase catalyzes the formation of glucuronic acid and peroxide hydrogen.Peroxide hydrogen releases neo-ecotypes oxide(O)under the function of peroxidase.(O)oxidizes tetramethyl benzidine, which make the color change.
Specific Gravity:Methyl vinyl ether and maleic acid copolymer is weak acid (-COOH) exchanger,the M+ cation (the major is Na+) in urine reacts with the exchanger and release hydrogen ion,hydrogen ion reacts with indicator produce color change.
pH:The method of pH indicator is applied.
Ascorbic Acid:Ascorbic acid deoxidizes the 2.6-dichlorphenolindophenol dye into colorless in alkaline medium.
Microalbumin:Sulfone phthalein dye has high sensitivity to microalbumin by the method of protein error.
Creatinine:Creatinine with 3,5-Dinitrobenoic acid produce violet compound in alkaline medium.
Calcium:Calcium ion reacts with methyl bromothymol blue produce color change in alkaline medium.
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2. For the use of this product, we must pay attention to several points. For example, at the beginning, we should immerse all the reagent part on the urine analysis strip into the sample, and then take it out immediately.
3. Additionally, the edge of the urine analysis strip should be gently brushed along the mouth wall of the sample container to remove excess urine. Then place the reagent block on the urinalysis strip horizontally up and compare with the color map to record the results.
