The center of Tropical Storm “Nanmadu†on the 11th of this year has landed on the coast of Jinjiang City, Fujian Province around 02:20 on August 31. The maximum wind force near the center at the time of landing is 8 (20 m/s), the lowest in the center. The air pressure is 992 hectopascals. “Namadu†weakened to a tropical depression on the coast of Jinjiang City, Fujian Province at 05:00 on the 31st, which is 24.5 degrees north latitude and 118.6 degrees east longitude. The maximum wind force near the center is 7 (15 m/s), and the lowest pressure at the center is 996 Pa.
It is expected that “Namadu†will be less in the Jinjiang coast of Fujian, and the intensity will continue to weaken.
Affected by the "Nanmadu" and the southwest monsoon cloud system, from 08:00 on August 31 to 08:00 on September 1, the Bashi Channel, the Taiwan Strait, the northeastern part of the South China Sea, the western part of the East China Sea, the coast of Zhejiang, the coast of Fujian, and the coast of Taiwan There will be 6 to 7 winds; some parts of southeastern Zhejiang, most of Fujian, eastern Guangdong, central and southern Jiangxi, and central and southern Taiwan have heavy rains. Among them, there are heavy rains in the southeastern part of Fujian.
The typhoon will not only directly destroy crops, but also change the small field environment in the landing area, leading to the spread of pests and diseases. The violent storms brought by the typhoon caused the crops to break roots and damage the leaves, and the disease resistance decreased drastically. Coupled with the flooding of crops, the surface is always in a high-humidity state, which is conducive to the spread of germs. Some migratory pests, such as rice planthoppers and rice leaf roller, will also be moved in large scale by means of typhoon airflow.
Typhoon rain can cause floods, and it can cause secondary disasters such as mudslides, landslides, landslides and soil erosion, causing agricultural lands to be flooded by siltstones; resulting in degraded soil quality and affecting crop growth. Some typhoons may even cause seawater inversion. Some of the flooded farmland will cause salt content in the soil due to long-term immersion in seawater, resulting in salinization of the land, which is not conducive to the growth of crops, and some farmland or even waste tillage.
After the release of the typhoon news, prepare for places that may be hit by typhoons and floods, and take timely measures to prevent and mitigate disasters. Take the following measures for field crops:
Drain the ditches, open up the drainage ditch in the field, ensure the smooth discharge of irrigation and drainage; prepare for disaster relief agricultural materials; and mature the rice, corn, soybean, melon and other field crops, organize the harvest in time; repair and strengthen the production facilities such as greenhouses. Timely organization of field workers evacuation.
Although the majority of the typhoon brought us disasters, the typhoon has its advantages. The favorable aspects of agriculture are as follows: First, the typhoon brings a large amount of abundant precipitation, which is very beneficial for relieving drought in arid areas, and some ponds are also stored. Second, typhoons can increase fishing production. When the typhoon hits the river, the nutrients at the bottom of the river are rolled up, the bait is increased, and the fish are attracted to gather near the water surface, and the catch is naturally increased.
As a disastrous weather, it can be said that no one will feel good about it when it comes to typhoon. However, everything has two characteristics. The typhoon is a disaster for mankind, but if there is no typhoon, mankind will suffer even more. Scientific research has found that typhoons have the following major benefits for humans:
First, with the global population surge and the development of industry and agriculture, the demand for fresh water is expanding, and the limited distribution of fresh water resources on land is uneven, and the world water shortage has become increasingly serious. The typhoon, a tropical storm, has brought abundant fresh water to people. The typhoon brought a lot of rainwater to China's coastal areas, the coast of Japan, India, Southeast Asia and the southeastern United States, accounting for more than a quarter of the total precipitation in these areas, which is important for improving the fresh water supply and ecological environment in these areas. significance.
Second, the tropical and subtropical regions near the equator have the longest sunshine hours, and the heat is unbearable. If there is no typhoon to dissipate the heat in these areas, it will be hotter and the surface sand shortage will be more serious. At the same time, the cold zone will be colder and the temperate zone will disappear. China will not have a spring city like Kunming, and there will be no Guangzhou with evergreen seasons. The “Northern Okura†and Inner Mongolia grasslands will no longer exist.
Third, the typhoon has a top speed of more than 200 kilometers per hour, and its energy is equivalent to the energy released by the explosion of 400 2,000-ton hydrogen bombs. This huge energy can directly cause disaster to human beings, but it also relies on this huge energy flow to keep the earth in heat balance, so that human beings can live and work in peace and contentment.
Fourth, when the typhoon with huge energy is formed and operated, it can break the long chain of water molecules by the action of lightning and form an active short-chain water molecule. The inhalation of these short-chain water molecules by the Earth's creatures can add vitality to life and make the earth's ecology last forever.
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