specific gravity Learn more about specific gravity
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The elegant Little Princess "Fairy Fish" Culture Collection of Tropical Fish
Fairy fish, also known as swallow fish, angel, small fairy fish, small fin sailing fish, etc., Riceae fish, native to South America Guiana, Brazil. The fairy fish grows 12-15 centimeters.
2019-02-28 -
Rice seed treatment techniques
Rice seed treatment techniques
2018-07-01 -
The latest course of Rice seed treatment techniques and methods
Rice seed treatment technology includes four steps: seed drying, salt water seed selection, seed disinfection and seed mixing of yield-increasing bacteria, the details are as follows. Seed drying can enhance the water permeability and air permeability of seeds, increase the germination rate, make the seeds germinate neatly, the seedlings are strong, and
2020-11-10 Latest rice seeds treatments techniques methods tutorials -
How about selling bonsai?
Introduction to bonsai, how to conceive the idea is to imagine the pile material, and plan in advance according to the characteristics of the pile; many experts and masters emphasize bonsai modeling, modeling should be put in the first place, after the chest is completed, and then hands-on production, the specification is to draw a modeling diagram first.
2019-05-10 -
How to raise seahorses?
The seahorse has a curved neck, a long mouth, nose and head, and looks similar to a horse. It is a valuable traditional Chinese medicine with high economic value. So, how to raise seahorses? 1. Artificial reproduction of parent fish hippocampus can be selected for 1 ~ 2 years old, healthy, intact and physically.
2020-11-11 Seahorse how raise seahorse with curved neck and -
Those things about bouquet packaging must be seen by florists.
The florist must see the things about flower bouquet packaging! Q1 I want to make a bouquet, but I don't know which flowers to choose. Are there any necessary flowers? A1 bouquet can express the mood and personality of the creator. There is nothing hard about the choice of flowers.
2018-09-10 -
There is a clever way to identify liquid fertilizer.
There is a clever way to identify liquid fertilizer.
2018-07-01 -
What is the nature of snake venom?
Snake venom is a kind of toxic proteins and peptides secreted by poisonous snakes, which contains a variety of enzymes, and it is also a substance that causes toxic reactions after poisonous snakes bite people. Fresh snake venom is a slightly fishy egg white-like sticky liquid, yellow, light yellow, green, or even colorless. It is neutral or weakly acidic when fresh, and can become alkaline after a little longer, with a water content of 50%-75% and a specific gravity of 1.030-1.080. Fresh venom is easy to foam when it comes into contact with air, and it is easy to deteriorate and lose when placed at room temperature for 24 hours.
2019-01-16 -
Discrimination of true and false water-soluble fertilizer
Discrimination of true and false water-soluble fertilizer
2018-06-30 -
Three measures for watermelon post-flowering management
It is difficult to set fruit if watermelon is in low temperature and rainy season with artificial pollination. On the one hand, the low temperature and rainy weather is not conducive to the activities of pollinators such as bees; on the other hand, the rain is too much, it is easy to wash away the pollen on the female flower stigma or make the pollen burst and lose the germination ability, and it is difficult to complete the fertilization.
2018-09-16 -
Is clown fish easy to raise?
Is clown fish easy to raise?
2018-07-06 -
Why pond fish lack oxygen in winter
This is because when the temperature drops, the surface water temperature of deep-water ponds, fertile water ponds and cage high-density aquaculture waters is lower than that of the lower layer, and the specific gravity of water is higher than that of the lower layer. As a result, the surface cold water sinks and the lower warm water floats, forming vertical convection of the water body. On the other hand, the water body of the deep water layer is anoxic or even anaerobic, and the anoxic and anoxic water body floats up, resulting in serious hypoxia in the upper water body. On the other hand, the vertical movement of the water body accelerates the oxidation and decomposition of residual bait and feces deposited at the bottom of the pond, and increases the oxygen consumption in the water body. On the other hand, winter is too much
2019-01-15 -
Processing of hard candy in ginger juice
Hard candy is the densest of all candies. In general, the specific gravity of hard candy is between 1.5 and 1.6. Hard candies do not sell well in the candy market at present, and there is a bright future if they are improved in variety and flavor. Ginger juice hard candy is rare in the market, and its processing technology is as follows: 1. Raw material treatment: using tender ginger or a small part of old ginger to wash clean, peeling and breaking into the beater, pressing and filtering to extract ginger juice for use. 2. The production process of making hard candy under atmospheric pressure is as follows: (1) boiled sugar: hard candy contains 9.
2019-01-15 -
The Marine Elf Nemo Family-- A complete Collection of the Culture of "Clownfish"
Clown fish is a common name for the fishes of the subfamily Sparidae, which is a kind of tropical saltwater fish. It is known that there are 28 species, one of which is from Premnas.
2019-02-27 -
Hatching technique of Shrimp in bumper year
Hatching technique of Shrimp in bumper year
2018-07-06 -
How much is the lobular rosewood bracelet?
How much is the lobular rosewood bracelet?
2019-02-18 -
Several methods of judging watermelon ripening
1. Accumulated temperature method. Watermelon needs a certain accumulated temperature from flowering to ripening. Generally, it takes 700 ℃ 800 ℃ for early and middle maturing varieties and about 1000 ℃ for late maturing varieties. Therefore, under the condition of suitable sowing time in spring and normal climate, the fruit development days of each variety are basically fixed. Early-maturing varieties need 28Mui 3.
2018-09-16 -
Analysis on the Scientific use of Pig compound Feed
Analysis on the Scientific use of Pig compound Feed
2018-07-09 -
How much is the tourmaline necklace?
How much is the tourmaline necklace?
2019-02-18 -
How do seeds spread?
Many plants have seeds, different plants have different seed shape, size, color, surface texture and so on, but they all have a characteristic, that is, they can reproduce. If you want to reproduce, you have to spread. So, what do seeds use to spread seeds? Seeded
2020-11-08 Seeds all shit what spread many plants all have seeds