The Egyptian beard owl is also known as the Egyptian pond catfish and the leather beard owl. Native to the Nile Valley in Africa, it is one of the local freshwater economic fish. China's introduction of trials in 1981 has achieved good breeding results and is currently being promoted in large

Types of pests and their harmful characteristics The pests that damage the roots of seedlings include the species of flies, golden needles, and fleas; the insects that bite off the tender stems and bite off the leaves are the ground tigers and snails; the sucking juices are cotton aphids, cotton th

The raw material for gluten is wheat flour (or bran), salt and water. Its amount is 45 pounds for wheat flour, 18 pounds for water, and 4-8 for salt. The wheat flour was first put into a large bucket, salt water was added, and the mixture was stirred with a stick to make it fully fuse and sticky.

First, the amount of feeding should be appropriate. Too much feeding of rice bran will lead to deterioration of pork quality, breeding ability of breeding pigs, and diarrhea in piglets. Therefore, the amount of rice bran feeding should not exceed 25% of the pig diet. Second, rice should not be fed

Peony, also known as wood peony, Luoyang flowers, rich flowers, Gu Yuhua, Kao, Guose Tianxiang and so on. Is a deciduous shrub of Ranunculaceae. General stem height 1-2 meters, up to 3 meters higher. The root is thick and fleshy. Multiple branches. The leaves are broad, with two pinnate, compound l

The dirt that adheres to tractor parts during work is most often oil, carbon, and scale. Oil is a mixture of oil and dust, iron filings. The method of removing oil varies depending on the materials used and the accuracy requirements of the parts, but the basic requirement is to remove the dirt with

Feeding methods for different stages of carp growth: low-value fishes are used as bait, and during the fry period, fresh fish is used as the staple food, and feeding is performed 5 to 6 times a day. The amount of fish fed is 20% of the fish's body weight. Feed chopped small octopus, feed 4 to 5

Bottom base fertilizer should be sufficient. Late buckwheat should not be robbed to sow planting. Under the premise of ensuring bottom crops, basic fertilizer should be re-applied, and conditional quality farmhouse fertilizer should be applied 3 to 5 square meters per mu; at the same time, the tota

1. Prevent impurities and dirt from entering the system The hydraulic system is powered by hydraulic oil. Its hydraulic components such as pumps, valves, cylinders, and motors have good mating surfaces between the pairs of motion components. The machining accuracy is high and the surface roughness

I. Rice diseases Paddy rice fields are prone to epidemics, rice blast, bastard disease, and downy mildew. In prevention and control, 1 strengthen field water management. It is forbidden to inundate the seedlings with flood irrigation, to pay attention to the rainstorm in time, to open the trenche

Farmers use the idle pillars of watermelon sheds to plant kidney beans, which can increase income by more than 1,000 yuan per mu. However, with the increase of the number of years, the growth of kidney beans is worse than a year. The output has been declining year by year, and there has been a phen

Specification Temp. range: -20 °C ~ +150 °C                                              Humid. range: 20 ~ 98 % RH Temp. accuracy: ±0.3 °C Humid. a