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Experiment on culture of sampan fish in cement pond
1 Materials and methods 1.1 sources of experimental fish on May 12, 2001, sampan fish were shipped from Indonesia and transferred through Malaysia, and arrived at the test site at 5 pm on the 14th. 3000 test fry were transported with oxygen in 6 bags and 3 boxes in live water bags. Upon arrival, only 1380 fry survived and the survival rate was only 46%. The fry put in the fry pond died one after another in the second and third days, and only more than 500 survived because the transportation time was too long. Death caused by carbon dioxide poisoning. 1.
2019-01-16 -
How to raise swallows (novice)
How to raise swallows (novice)
2018-08-13 -
This alien invasive weed was once a life-saving vegetable during the revolution, but now it has become a rich grass.
After the arrival of spring, all kinds of weeds in the countryside have begun to grow. For farmers, weeds are a part of life. Some weeds are loved and some hated.
2018-05-14 -
The latest methods of overwintering crops
Every year, with the arrival of winter, the temperature drops and the weather is cold. If there is a slight carelessness in the process of grain cultivation, frost injury will occur, affecting the yield after the beginning of spring. In order to prevent grain from frost injury during overwintering, the following methods are introduced to prevent frost injury.
2020-11-10 The latest crops overwintering methods Daquan every year accompanying wintering -
The latest feeding methods of swallow fish (beginners)
When it comes to swallow fish, I believe many friends will feel strange, but if they are mentioned by another name, I believe everyone will be familiar with the fairy fish. Swallow fish, also known as fairy fish, angel fish, is a very good-looking tropical fish, the fish body is diamond-shaped, extremely flattened
2020-11-10 The latest swallow fish breeding methods novice article mentioned -
What is the lily of the valley language?
What is the lily of the valley language?
2019-03-08 -
A new round of cold wave causes a sharp drop in temperature. Spring wheat beware of late spring cold.
A new round of cold wave causes a sharp drop in temperature. Spring wheat beware of late spring cold.
2018-07-11 -
How to raise primroses? Maintenance and management of primrose bonsai
Primrose, dignified and elegant, the flower has a faint fragrance, golden yellow, the outer edge has a red, its flowering period is from February to April, the earliest among the flowers, and then ushered in the flowers to welcome the arrival of spring.
2019-04-25 -
Since I raised succulent plants and went home earlier and earlier, I just want to take good care of it.
After October arrived, the weather in many places really began to turn cold, so cold good love meat ah! Today let's talk about how to protect our succulent plants! Colored succulent autumn is coming, your green and overgrown succulent.
2018-10-19 -
Soybean meal temporarily stabilizes to good aquaculture industry has not substantially improved
Recently, driven by factors such as stock of feed enterprises and decline in operating rate of oil plants, soybean meal showed a moderate upward trend. In addition, the arrival of imported soybeans in Hong Kong is lower than that of the same period last year, which may lead to insufficient supply of raw materials in some oil plants after the festival, and the soybean meal market will flow.
2016-03-20 soybean meal temporarily stable improving aquaculture not substantial -
What is the name of the typhoon?
What is the name of the typhoon?
2018-07-04 -
These four kinds of flowers like the colder the winter, the more prosperous they are suitable for planting in autumn.
These four kinds of flowers like winter, the colder they are, the more prosperous they are. They are suitable for planting in autumn. With the arrival of the National Day, they gradually enter late autumn. The cool weather in autumn is suitable for planting and planting all kinds of flowers, especially some in.
2018-10-05 -
The first sweet-scented osmanthus flower in Jiangcheng is about to bloom, and the rest of the time is full of osmanthus fragrance.
White Dew has already arrived, and the meaning of autumn is even stronger. The eighth month of the lunar calendar is also called "Guiyue", which means the month when sweet-scented osmanthus blossoms. At this time, the wind blowing, sweet-scented osmanthus blossoms, the wind will be vaguely sweet-scented osmanthus, so it is also called "sweet-scented osmanthus.
2018-09-15 -
Why did Xinyi suffer from the flooded El Nino?
Why did Xinyi suffer from the flooded El Nino?
2019-02-21 -
2 square millimeter sensor Internet of things era will have a chance
2 square millimeter sensor Internet of things era will have a chance
2019-02-21 -
Safe use of tea picking and pruning machine
With the arrival of tea picking season, tea pickers will be widely used. In order to give better play to the role of machinery and agriculture, safe operation is very important. Please work according to the operating procedures. 1. Clothing requirements during operation 1) Please wear long sleeves
2020-11-08 Species tea picking pruning machine safety use along with -
These five kinds of flowers are bright and beautiful and casually blossom into bouquets worth having.
Summer has arrived, the weather is hot, it is better to put these five kinds of flowers indoors, the flowers are big and beautiful, casually bloom into a bouquet, it is worth having! Pelargonium, also known as hydrangea, has a wide variety, colorful and colorful flowers.
2018-05-24 -
Agricultural experts talk about drought resistance: the key to technical measures lies in "landing"
There will be drought and waterlogging on July 15 and a harvest on August 15. However, since the beginning of summer, 12 provinces and regions, including Henan, Shaanxi and Hebei, have been suffering from drought. Recently, Mei Xurong, head of the disaster prevention and mitigation expert guidance group of the Ministry of Agriculture and director of the Science and Technology Bureau of the Chinese Academy of Agricultural Sciences, was interviewed by reporters.
2016-03-20 Agricultural experts talk drought resistance technology measures key in " landing -
I announce that all the little sisters here are contracted by me.
I have heard that there is a kind of bird in the world that has no feet. It can only fly and fly all the time. When it is tired, it sleeps in the wind. This kind of bird can only go to the ground once in its life, and that is when it dies. The passage of "the True Story of Alfie".
2018-08-25 -
This weed claimed that black mines were once fed to pig roots, but it was a good medicine worth 8 yuan per jin.
After the arrival of spring every year, all kinds of weeds in the countryside begin to grow, whether in front and behind houses, roadside, farmland, mountain forest, etc., can be seen everywhere, except for the weeds growing near the farmland.
2018-06-19