The bitter buckwheat cultivated in spring grows quickly when nitrogen is supplied, and a new leaf can be drawn every 3 to 5 days. The leaves are large, the leaves are thick, the leaves are dark green, and the yield is high and the quality is good. Therefore, the cultivation of bitter buckw.......
The working principle of the new medicinal material cutting machine: the mechanical transmission conveyor chain is used for continuous feeding movement according to the set distance, and the rotary cutter mechanism cuts the mater.......
Nutrient loss is affected by factors such as the amount of fertilization, time of fertilization, rainfall, and rainfall intensity. The higher the amount of fertilizer, the greater the risk of nutrient loss; the greater the rainfall and the higher t.......
Stainless steel butterfly valves show rust during use. After metallographic analysis, dyeing test face, heat treatment test face, SEM and other test analysis, the key factor of material corrosion was found because the carbides al.......