What we usually call potato degradation is actually the growth of potato plants infected with viruses. As the virus invades the normal physiological functions of the potato plants, some plant growth potentials decline, the plant type becomes shorter, the pages shrink, the leaves appear yellow-green intercalated patches, and even the leaf veins necrotic until the entire compound leaves fall off. As the organs that make nutrients are disturbed and destroyed by the virus, the plants grow abnormally, resulting in a significant reduction in production. Commonly, the seed potatoes transferred from other places are produced in high yields in the first year of planting, and the harvested potatoes are left to grow. When they are planted, the plants obviously have poor growth potential, yield decreases, and tubers become smaller, which is generally speaking. Potato degradation.
There are 20 viruses and virus-like viruses that infect potatoes. In China, there are 5-6 kinds of viruses that are harmful to potatoes, and 1 type of virus. These viruses can infect bacteria and other viruses in addition to invading potato plants. There are more than a few virus invasions on the same plant. Therefore, the longer the potatoes are grown, the heavier the virus and the greater the reduction in output.
The main ways of transmission of viral diseases are contact, friction and poisoning and insect transmission. Some viruses can rub against each other through the contact between the leaves of the field plants, so that the virus of the diseased strain is transmitted to the healthy strains. The pests that bite the mouthparts bite the diseased strain and then bite the health strains and can also transmit the virus; some viruses transmit the virus through the locusts. In particular, wing-worm-borne viruses are the most prevalent, spreading fast and having a high degree of fluidity and are most difficult to control.
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