1. Balance crop nutrition growth and reproductive growth;

2. Balance the ground part and the underground part of the crop;

3. Regulate the relationship between the principle branch and the lateral branch;

4. Increase the disease and stress resistance of the crop.

1. Raising the utilization ratio of fertilizers;

2. Supplement of trace elements;

3. Rich in rare elements.

1. Adjust the physical structure of the soil;

2. Adjust the chemical composition of the soil;

3. Adjust the micro-ecology condition of the soil;

4. Adjust the alkalinity of the soil.