Soil is the loose surface layer of lithosphere and the substrate for the survival of terrestrial plants. It provides essential nutrients and water for plant life, and is an important place for material and energy exchange in the ecosystem. Because of the great contact between plant roots and soil, frequent material exchange between soil and plants has a strong influence on each other, so soil is an important ecological factor of plants, and the growth and yield of plants can be affected by controlling soil factors. The ability of soil to meet the needs of plants for water, fertilizer, gas and heat in time is called soil fertility. Fertile soil can meet the requirements of plants for water, fertilizer, gas and heat at the same time, which is the basis of normal growth and development of plants.

Nutrient solution plays an important role in the normal growth and development of plants. When preparing nutrient solution, the formula and dosage should be determined according to the varieties, different growth periods and different regions of cultivated plants. Strive to achieve a comprehensive and balanced nutrition. Is beneficial to plant absorption and utilization.