Fertilizer can not match

Farmyard fertilizers cannot be mixed with alkaline fertilizers such as plant ash, lime nitrogen, lime, calcium, magnesium and phosphate fertilizers. The main component of human and animal feces is nitrogen, and when mixed with strong alkaline fertilizers, it will fail due to neut

Pickup smoke spreads to the middle


In the first half of 2009, the state introduced a series of policies to promote the automobile industry, but the stimulatory effect on the commercial vehicle market is not obvious. Under this background, all commercial vehicle manufacturers and distributors are digging deeper into the

Soil moisture measurement method

Soil moisture measurement method
1 Scope of application This standard is used to determine the moisture content of all types of soil except gypsum soil and organic soil (a soil containing more than 20% organic matter).
2 Principles of Measurement The weight loss of a so