Main: freeze dryer double-layer glass enzyme reactor
Drying methods are various, such as drying, boiling, drying, spray drying, and vacuum drying, but ordinary drying methods are usually carried out at temperatures above 0 ° C or higher. The products ob.......
Drying methods are various, such as drying, boiling, drying, spray drying, and vacuum drying, but ordinary drying methods are usually carried out at temperatures above 0 ° C or higher. The products ob.......
First, aquaculture waters generally require a depth of 2 m to 2.5 m in the aquaculture waters. During the first half of the month before the fish fry is released, lime is sprinkled and disinfected in the surrounding waters. Second, seed stocking density and disinfection stocking specifications.......
Snakes are an indispensable food for humans and they are also one of the sources of medicines. People have obtained high-grade protein, amino acids and primitive medicines for treating various chronic illnesses from the proliferation of snakes, which are used to improve human quality of life a.......
First, nurture strong seedlings and cultivate strong seedlings. The terrain is high. Within two years, no land for solanaceous crops has been planted, and a nursery shed with high north and low south is built. Bed soil should be used in the cultivating layer of mature soil, 50 grams per square.......
After the summer, the outside temperature rises. In order to ensure the temperature in the shed, greenhouses often open vents day and night. This year, the weather is relatively dry and there are many pests. With the arrival of summer, the peak period of pest growth and reproduction has also c.......
How to pick a high-quality red wine in the face of the numerous and expensive imported wines? Will impurities in wine be fake? Take French wine as an example, teach you to choose the most cost-effective imported wine from the following four strokes.
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Business News Agency June 17th The growth of China's medical device industry is strong. The multinational companies' technological advantages have accelerated their penetration in rural areas, while domestic companies clustering in the low-end and midd.......
In all stages of laying hens' management, the peak of egg production peak changes greatly, and the chickens have undergone tremendous changes from the physiological state to the feeding and management methods. Factors such as chicken migration, production, feed changes, inactivated vac.......
1. Silage 20 to 25 kilograms per day. Dairy cows that eat silage are best matched with quality hay (green hay). 2. Hay has no less than 4 kg per cow per day. At present, most regions lack hay. Therefore, the grass season must take time to dry the hay. 3. Roots such as carrots and squash should.......
Quicklime is a commonly used substance in the prevention and improvement of water quality in current fishery production. The rational application of quicklime in some fish cultures can neutralize excess acid, precipitate toxic metal ions, kill fish pathogens, promote the condensation and decom.......
The tractor should drive with low speed and pay attention to observing the instructions of the farmer who is controlling the tools and prepare the brakes at any time. Persons engaged in farm implements should stand on one side of the traction puller. They must be ready to hide. Do not cross th.......
First, urea solution: commonly used concentrations of 0.5% -1%, 0.5-1 kg of urea, 100 kg of clean water. Diamine content of urea toxic substances more than 1.5%, can not be used for foliar fertilizer.
Second, urine washing mixture solution: with nitrogen supply, eliminate the two effects........
Second, urine washing mixture solution: with nitrogen supply, eliminate the two effects........