content of soil nutrients
Contents of nutrient elements
control of total nutrients
foliage nutrient contents
foliar nutrient contents
Forage nutrition contents
Mineral nutrient contents
nutrient contents
营养盐含量
肥料成分
营养成分
营养元素含量
养分
养分含量
营养元素
营养物质
营养盐
nutrient contents in leaf
nutrient element contents
nutrients element content of soil
absorption of nutrients