The gear pump works by twisting and rotating the two gears, and the requirements on the medium are not high. The general pressure is below 6 MPa and the flow rate is large. The gear oil pump is equipped with a pair of slewing gears in the pump body, one active .......

1. Wheaty smut diseased wheat smut occurs in the panicle, the diseased plant is slightly shorter, the tillering is increased, the diseased ear is darker in color, the husk is slightly open outward, and the whole panicle granules are all black Powder, the chlamydospore of the bacteria. The .......

Traveling to Lixian County now not only allows you to appreciate the culture of Shanxi Merchants, but also places you in Pear Blossom Sea where you can see Pear Rain and smell the garden fragrance. In recent years, the Lixian pear industry has been developing rapidly, with a total area of .......

1 Alias ​​mountain apricot and sweet plum

2 Living habits are cold-tolerant, drought-tolerant, and adaptable. They do not require strict soil and climate, and they can be cultivated in mountain areas. However, it is better to use sunny and well-drained land and avoid .......

Variety identification number: é—½ Recognition fruit 2009005

Crop Type: Litchi

Variety Name: Large Clove

Breeding units: Institute of Economic Crops, Hainan Academy of Agricultural Sciences, Ganzhou City and Qingmei Village, Qiongshan Fruit Research Institute, H.......

Scientific name: Pinus armandii franch.

Family Genus: Pinaceae

Distribution: Shanxi, Shaanxi, Gansu, Qinghai, Tibet, Sichuan, Hubei, Yunnan, Guizhou, Taiwan and other provinces (regions) are distributed.

Morphological characteristics: arbors up to 35m, diameter at b.......

Mint, also known as Sumin, is a commonly used traditional Chinese medicine. Its extractant menthol is the main component of cool oil. Folks also use mint leaves for external application or boiled paste for topical treatment of certain diseases. Poisoning is often caused by overdose.

Hericium erinaceus, also known as hericium erinaceus, hedgehog fungus, cauliflower fungus or mountain virginia, was originally a rare edible mushroom that was deeply hidden in the jungle. The fruiting body is round and thick, often suspended on a tree trunk, covered with needle-shaped baci.......

Variety characteristics:

Unprecedented heat resistance, surprising dwarf species;

Dark green color, delicate leaves;

Strong resistance to pests and diseases, effective resistance to brown spot, wilt disease, etc.;

Strong drought resistance, well-developed ro.......

Mr. Di of Chenzhou City of Hebei Province and Mr. Shan of Jianli County of Hubei Province asked that their previous cotton top dressings used more nitrogenous fertilizer such as urea. Can they now apply compound fertilizer? How to apply?

Answer: Yes, high-nitrogen or nitrogen-potas.......

   The purity and selection principle of gas used in gas chromatography