P balance 第1页

Soil Phosphorus Balance and Changes of Olsen-P of Black Soil under Long-term Conventional Fertilization Response of Olsen-P to P balance in cinnamon soil under long-term fertilization Dynamics of phosphorus in Fluvo-aquic soil under long-term fertilization Study on balance of phosphorus and potassium in winter wheat and summer maize rotation system Response of Olsen-P to P balance in yellow soil upland of southwestern China under long-term fertilization. Element concentration in leaves and nutrient resorption efficiency on dry-red soil and vertisols in dry and hot valley in Yuanmou, China.