Fish bone culture

Fish and fish bones are commonly known as "Jihua Fish" or "Jupei Fish" and are commonly found in rivers and lakes in the plains of the middle and lower reaches of the Yangtze River. In natural lakes, the 2nd-instar fish can grow up to 250g, and individual can grow to 500g. Over .....

Common Jinque bonsai production method

The golden finches get their name because of the yellow flowers that are shaped like birds that fly. In addition, there are Caragana, flying phoenix, flock bird, leopard whip and other aliases, is a small deciduous shrub of legume Caragana. The plant height is about 1.5 meters. The iron-brown trun.....

Select pig feed ingredients

First, pay attention to the type and amount of raw materials The variety of raw materials should be diversified to facilitate the use of various nutrients to complement each other. The proportion of commonly used pig feed is cereals such as corn, rice, barley, wheat, sorghum, etc., accounting for .....

Difficulties and common problems in fly maggot farming

1. There is a certain degree of difficulty in the domestication of species of flies, and the time is longer. The solution is: direct introduction. ? 2, species of flies do not lay eggs. The flies always stay in places where light is strong and do not want to eat food, spawn or spawn very little......

Harvester idle period maintenance

Combine harvesters use a short period of time in a year and are idle for a long time. The correct maintenance of the combine harvester is an important part of extending the service life of the machine and ensuring the stable operation rate and operation quality of the machine. Thoroughly clean th.....

Autumn safflower

Choice of customs: Red flowers like warm and dry climate, adaptability, cold and drought. The optimum temperature for seed germination is 15°C-25°C, the germination rate is slower below 10°C, and the seedlings can tolerate a low temperature of -9°C. Safflower is scary, and it is better.....

German scientists use body temperature to power micro m…

Release date: 2007-08-10 German scientists use body temperature to power micro-medical equipment. German scientists have successfully used the temperature difference between the body surface and the external environment to generate electricity, which provides a possibility for electronic equipm.....