（1）Promoting rootgrowth, alleviating successive cropping obstacles, increasing thefertilizer application efficiency and slowing plantsenescence.

（2）Controlling andbalancing the growth of plant, preventing excessive growth ofbranches, decreasing pruning.

（3）Improving thegrowth of leaves and the photosynthesis, which is good fornutrient accumulation, trans- portion and storage.

（4）Promoting buddingand flowering, decreasing, preventing bud, flower and fruitdecreasing and abnormal fruit, small fruit and rottenfruit.

（5）Promoting to keepgood shape, bright and colorful peel, high sugar content, andlong-term storage.

（6）Reducing littleleaves, yellow leaves, arbuscular, fruit shrink, bitter pit, pitand other physiological diseases occurrence caused by nutrientdeficiency.

（7）Repellent effectof sucking insects, reduce spread of the virus caused by worms,phytoplasma and bacterial diseases.

（8）Improving theability of plants to fight against frost, cold, submersion anddrought.

（9）Adjusting soilPH, improve soil physical structure, keep moisture and fertility,be conducive to the growth of microorganisms