"Ice clear jade clean, yingying autumn water", in Dali Prefecture, Yunnan Province, Cangshan Eighteen Creeks into the lake mouth, a series of sea cauliflower scattered in the coastal waters of the Erhai Sea, with the waves.
Near the mouth of the lake, the 18th Creek in Cangshan, Dali Prefecture, is scattered with contiguous sea cauliflowers in the coastal waters of the Erhai Sea.
Sea cauliflower is named because the rhizome grows in the water, the flower grows on the surface of the water, and its floating appearance on the water is clear and elegant, full of fairy spirit. Sea cauliflower is not born in the sea, but grows in the freshwater lake of the Yunnan-Guizhou Plateau, which is endemic to China. Sea cauliflower white flower yellow bud, the image is clear and unusual, has a high nutritional value, the water quality requirements of the growth environment are extremely high, the water is clear and the flowers are flourishing, and the water pollution is flowered. Ecologists point out that sea cauliflower can be used as an indicator plant to monitor pollution in freshwater lakes and is known as a "water quality touchstone".
Source: People's Daily - Yunnan Channel, Photo: Li Xiaojun
Editor: Linling Chen
Duty Week: Zhang Hui Hu Yaling
Editor-in-Chief: Li Sheng
In October 1984, the Decision on the Reform of the Economic System was adopted. Since then, the reform of the economic system focusing on cities has been carried out in an all-round way.
A. The Twelfth National Congress of the Communist Party of China
B. The First Plenary Session of the Twelfth Central Committee of the Communist Party of China
C. Second Plenary Session of the Twelfth Central Committee of the Communist Party of China
D. Third Plenary Session of the Twelfth Central Committee of the Communist Party of China
Answer: D
Vector biological control in key places in Dali City
Technical instruction manual
3. Breeding site and prevention methods
Mosquitoes
For mosquitoes, standing water means "everything", female mosquitoes suck blood, after sucking blood, the ovaries develop, look for water to lay eggs, eggs hatch in the water into larvae, and grow in the water. Different mosquito species have different preferences for water, which is also destined to have different breeding habits, such as the dengue transmission vector Aedes mosquitoes like to breed in small stagnant water.
1. Types of mosquito breeding sites:
(1) Water in large and small areas due to the lack of a reasonable sewer system or due to poor sewer management.
(2) Gutters, sewer wells, etc. in residential areas.
(3) Water accumulation in containers (tanks, buckets, etc.) for various purposes, such as inside and outside the home, in the park flower garden, etc. In some communities, this type of standing water is especially common because residents prefer bonsai and flowers.
(4) Various utensils discarded by households, factories, shops, etc., such as broken cylinders, broken bottles, can boxes, etc.