Corn pest control

Corn rough disease is a kind of corn virus disease caused by corn roughing virus, commonly known as "every year old", "sitting slope", "reed" and so on. Once the corn is infected with the disease, the damage is very serious.
First, the cause of the disease The disease is spread by the gray planthopper, soil, seeds can not spread. Before the five-leaf stage of maize, the immunity is weak. If there are more gray locusts during this period, it is most susceptible to disease.
Second, the symptoms First, the fine veins on both sides of the mid-vein of the young leaves appear transparent chlorotic curve small points, after the increase of transparent lines, the main back of the leaf veins produce different lengths of wax tears. The leaves of the diseased plants are thick green, the internodes are shortened, and the plants are dwarfed, often less than half of the healthy plants. Mild diseased plants have tassel dysplasia and less loose powder; the ears are slightly shorter, the filaments are less, and the grain is reduced. The roots of the diseased plants are few and short, less than half of the healthy plants. The plants of the seriously ill strains are dwarfed seriously, the leaves are compact and clustered, and the tassels are not extracted; the female ears are short and have no seeds.
Third, prevention measures
1. Plant resistant varieties. 2. Seed coating or chemical dressing. 3. Remove the susceptible strains in time and take them out of the ground. 4. Remove the weeds in the fields and fields in time. 5. Add organic fertilizer, timely watering, and enhance the disease resistance of corn. 6. Adjust the corn sowing date. The wheat field interplanting is suitable for late sowing, preferably live broadcast, so that the corn seedling stage and the gray planthopper are staggered. 7. Chemical control. Spray 50% methamidophos 1000 times before and after emergence. In the early stage of the disease, spraying the plant pathogen, the bacteria poison clear, and the gibberellin have certain effects of reducing the disease.

The carbon can remove the SO2 in the flue gas desulfurization (sulfur dioxide), denitrification is mainly from NOx in flue gas (nitrogen oxide), the two substances into the atmosphere will be the formation of acid rain, acid rain harm is very large, so now the country has been promoting environmental protection, with coal as the fuel gas containing these substances, especially thermal power plant, thermal power plant are now built simultaneous construction of desulfurization, denitrification and now the state has not started to force.

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