Abstract:

The research aims to study the status of molybdenum (Mo) in soils of China, optimize the application technology of molybdenum fertilizer, improving the absorption and utilization efficiency of Mo by crops, and promoting crop growth and yield. The content of total Mo and available Mo in soils of China was clarified through collecting data, the supply of soil Mo was evaluated, and the effects of different molybdenum fertilizer application rates and methods on crop growth and yield were studied. The range of total Mo content in soils of China was 0.1-6 mg/kg, with an average of 1.7 mg/kg, slightly lower than the world average; the content of available Mo in soil was affected by parent material of soil formation, soil pH value, etc., and the available Mo content was low in northern loess parent material soil and acidic soil in the south; the application of molybdenum fertilizer could significantly improve the yield and quality of crops such as soybeans, and the effects of seed treatment and foliar spraying were significant. The content of Mo in soils of China is insufficient, especially in northern loess parent material soil and acidic soil in the south, and molybdenum fertilizer should be applied to improve the availability of soil Mo; the rational application of molybdenum fertilizer is of great importance for improving crop yield and quality, especially in areas with low Mo content; the application methods of molybdenum fertilizer are diverse, and seed treatment and foliar spraying are effective application methods that can improve the absorption and utilization of Mo by crops.

Key words: soil, molybdenum status, total molybdenum, available molybdenum, molybdenum fertilizer, application technique, crop growth, seed treatment, foliar spraying