Nutrition diagnosis and balanced application of fertilizers of Coffea arabica L. in coffee-litchi agroforestry STUDY ON FERTILIZATION EFFECT AND NUTRIENT DIAGNOSIS OF EUCALYPTUS UROPHYLLA BY“416-A”OPTIMUMMIXED DESIGN Effect of N, P and K fertilizer combination and application rate on yield of Astragalus sinicus L. STUDY ON THE FERTILIZATION EFFECT UPON THE WOOD PROPERTIES OF POPULUS DELTOIDES cv.“LUX”ex I-69/55 Study on the Effect of Fertilization on Young Trees of Casuarina Inoculated with Frankia A Study of Fertilization Effect on Young Trees of Eucalyptus urophylla Studies on recommended fertilization methods of summer maize in different fluvo-aquic soil texture Effects of N, P, and K Fertilizer Application on Cotton Grown in Saline Soil in the Yellow River Delta Preliminary Study on Fertilization Effectiveness of Azadirachta indica Young Plantation in Yuanmou Dry-hot Valley Study on Nutrient Conditions of Horned Gall Aphid and the Fertilization Effect of Rhus chinensis Vector Diagnosis of Nutrient Balance of Eucalyptus grandis Fast-Growth Plantation