There are many reasons for the unclean fruit surface of apples: pest control before bagging, bagging techniques, fruit bag quality, calcium deficiency, orchard management, orchard climate.
Measures: Before bagging, medication must be selected safe and efficient pure agents, such as polyoxin, pure thiophanate-methyl, Dasheng M-45 WP, try not to use compound pesticides and copper pesticides containing sulfur powder; Before the bag must be sprayed to prevent rotten fruit disease, until the liquid is dry and then bagging; when it rains and there is dew, do not bagging, in order to reduce the incidence of black spot disease on bagging surface; with waterproof performance, high shading Double-layer paper bag with wax evenly on the inner bag; when the bagging is done, the paper bag cover must be opened, put the young fruit in the center of the paper bag, do not let the young fruit tightly seal the bag, so as not to cause sunburn; spray before the bagging Calcium fertilizer 2 to 3 times, calcium fertilizer should be selected calcium ion concentration, the tree is easy to absorb the amino acid calcium, spraying must be sprayed on the fruit surface of calcium fertilizer, spray a calcium fertilizer after bagging; drought, Spraying water at night also has a certain effect.
Disposable Virus Sampling Tube
This Disposable Virus Sampling Tube is mainly composed of sample storage tube, sample preservation solution and sampling swab.
This Disposable VTM is mainly used for collection, transportation and preservation of oropharyngeal parts of respiratory and enteric virus such as new coronavirus (COVID-19), influenza, bird flu, hand-foot-mouth, swine flu and so on. It is also suitable for the collection of other viruses, chlamydia, mycoplasma and ureaplasma urealyticum specimen. It is adapted to oral cavity, nasopharynx, virus and DNA collecting etc.
Disposable virus sample collection tube,Disposable VTM,specimen collection tube,sample collection tube,sample transport medium
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