When planting off-season vegetables, not only plastic facilities, greenhouses, and other hardware facilities are to be put in place, but fertilization technology is also crucial. After practice, the key points of the off-season vegetable fertilization technology are introduced in a targeted manner-----
Selected by the Qinghai Academy of Agriculture and Forestry Sciences for horticultural research. Plant height 295 cm, stem upright, more branched branches, irregular tube-shaped or rod-shaped tube, underground and more concentrated, epidermis purple, meat white, the average yield per plant 961 gram-----
Spring is the golden season of pheasant brooding. However, due to the low temperature in the spring and the changing climate, chicks are prone to disease. In particular, chicks within 3 weeks of age are more likely to get sick and die. In order for the chicks to grow fast and have a high survival r-----
Briefly update the development of China's electromagnetic valve industry technology First, the main features of document.write ('') solenoid valve document.write ('') (1) External leakage is blocked, internal leakage is easy to control, and safety is -----
The biggest drawback of the more than 50-year-old 3D video entertainment technology is that the audience has to wear the cardboard glasses that are only one size and not suitable for anyone. As long as people who have watched 3D movies know that 3D pictures look blurry, swaying and d-----
Increase the maximum utilization of organic fertilizers Organic fertilizers contain a large number of elements such as nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur, and also contain various trace elements, which are the best fertilizers for crop growth. However, when organic fert-----
In electrophoresis experiments or other nucleic acid separation experiments, EB (Ethidium bromide, EtBr) is commonly used as a non-radioactive Marker to identify and display nucleic acid bands. EB is a dark red, non-volatile crystal that is slightly soluble in water. It emits reddish-brown fluoresce-----