Solar greenhouse scientific fertilization technology

Linyi Fertilizer Network Copyright 1 Fertilization principle According to the law of nutrient absorption and utilization of crop growth and development, organic fertilizer is applied again, nitrogen, phosphorus, potassium and other fertilizers are matched, and appropriate fertilizer and micro-fert ...more...

Development Status and Future Planning of Hunan Diamond and …

Hunan Province focuses on the construction machinery for high-strength structural steel, high-performance tools, wear-resistant materials, etc., focusing on the implementation of three types of material engineering: ultra-fine crystal high-precision hard alloy and ultra-rough grain, wear-resistan ...more...