(1) The rearing density of broodstock broodstock should be properly controlled according to the area of ​​the pond, the quality of the water, and the amount of water, usually 5-10 kg/m3. Male and female new fish were bred, and broodstock of different age groups were bred.
1........

Chestnut is one of China's famous "local specialties" with abundant resources and large output. In recent years, chestnut's domestic and foreign markets have not been as good as before, and prices have continued to decline, resulting in slow sales. The main reason lies in two.......

ZL200410060652.0 New Patent Technology Details

Roots increase production agent

• Posted on September 24, 2019

As a result of its advantages of less investment, easy start-up, low risk, and high profitability, river crab breeding in shed land has become one of the important projects for civil investment in the coastal areas of East Jiangsu and East China. Based on extensive investigations and resea.......

Sheep homes are sterilized every spring and autumn. Commonly used disinfectants and disinfection methods are as follows: 1 Lime milk is added to a mixture of 10% to 20% lime milk, which is suitable for the disinfection of infectious contaminated pleuropneumonia, lamb diarrhea and other pat.......

As the saying goes: "The season of the year is spring." Doing a good job in spring management is one of the conditions for the successful breeding of Astragalus. The following author combined with practice to talk about the management points of spring aphid breeding:

1. R.......

In the winter and early spring, it is the season of stocking fish. In the process of pulling or transporting fish, if the fish is injured due to improper operation, the fish will be infected with water fungus.

Susceptible fish, the surface of the wounded body covered with cotton w.......

The early stage of heartburn is less frequent and usually occurs when the plant grows to 11 to 12 leaves. The cause of the disease is mainly caused by calcium deficiency. Control methods: Cultivation of celery prone to heartburn, should start from the management, so that the temperature, humid.......

4. The greenhouse fumigation and disinfection shall be carried out 7 days before planting and planting. The method is to ignite 1.5g/m2 sulphur powder mixed with sawdust and retort in a closed greenhouse for 24 hours before ventilating and ventilating. Due to the growing period of ornamental p.......

To master the lactation period of weaned piglets, it is generally 28 days to 60 days in our country. Large-scale farms generally take 35 days of weaning. Some were weaned at 28 days, 42 days, or 60 days of age. The best feeding conditions are 40-day-50-day-old weaning.

Suitable wea.......

1, apply base fertilizer. 300-400 kilograms of peanuts per acre, the base fertilizer is generally controlled at 2000kg per mu, and ammonium bicarbonate 20-30kg, superphosphate 50kg, potassium chloride or potassium sulfate 15kg, even before the preparation Spread, turn into the tillage layer. <.......

Breeding facilities Adult breeding of black cockroaches includes pond aquaculture and cage culture. The size of ponds cultured in black seabream varies from 0.025-1.1 hectares with water depths of 0.7-2.5 meters. Taiwan has also conducted trials in a cement pool of 551.2 m3. The use of cages (.......