The establishment of safe food production laws and regulations and the formation of market access mechanisms have made fishery health aquaculture an inevitable path for the current development of aquaculture. Cold-water fish breeding in Huairou District of Beijing has a long history. New varieties ......
When the crabs are slaughtered, one hand holds the crab shells in place to prevent crab clawing (clamping) from hurting others; the other hand slowly penetrates the crab's brain and heart with a probe to kill the crabs. The shell was slowly peeled off with forceps and a scalpel, and the muscles ......
1, can not start. Check that the wire connection is secure and that the switch contacts are tight. If there is a broken circuit or poor contact, it should be repaired. 2, can not absorb water. The reason is that there is air in the pump body or water in the inlet pipe. Remedy: Press water first, f ......
The Soil and Fertilizer Institute of Hunan Province has developed a biodegradable film controlled release fertilizer for rice, which can be widely used in rice cultivation areas in China. It has no side effects. The Hunan Provincial Soil and Fertilizer Research Institute uses natural and semi-natur ......
The breeding and management work before and after the breeding of the breeding goose can improve the breeding performance of breeding geese and ensure that there are many good goslings. Select and eliminate poor breeding geese (reserve breeding geese) to choose to leave those weight, moderate sens ......
First, the conditions of mushroom bud formation temperature is 15 °C ~ 22 °C, diurnal temperature difference is 8 °C ~ 10 °C, relative humidity of air is 80% ~ 90%, and to maintain a certain degree of scattered light and good ventilation. After the mycelium is full of material, it needs ......
Dwarfing and high-yield cultivation of summer corn, that is, on the basis of dense planting, at the end of the corn florets differentiation stage, using chemical control techniques, that is, spraying corn robustin, ethylene brilliance, DF-1, etc., greatly reducing the height of corn, increasing Th ......
More than three years of planting can be harvested. The harvest is divided into two phases. In March and August, Sanqi is harvested in July-August. It is called “Spring Sanqiâ€. After harvesting, the quality of Panax notoginseng collected after flowering is the best, and the yield is als ......
1. In the early spring, check the warm and windless afternoons after the beginning of spring. Perform a thorough and comprehensive examination of all bee colonies to extract excess empty spleen to make the bees dense. Sweep the wax at the bottom of the box to reduce the emergence of the worms. The ......
Some vegetables contain substances that affect human health and are a type of “toxin†that needs to be managed. Such as spinach, bamboo shoots, garlic, onions, white rice, soybeans, etc., all contain more oxalic acid. Oxalic acid deodorization affects the taste, but more importantly, it ......