See Poem Tips for maintaining the root system of vegetables
1. The root system of vegetables has three functions:

1. 1Absorption. It can absorb water and nutrients. It absorbs water to meet the needs of leaf transpiration and fruiting. It absorbs nitrogen, phosphorus, potassium and trace elements to meet the various physiological needs of vegetable plants. 2. Support. It plays the role of a pillar, allowing vegetable plants to stand in the soil and allowing the upper stems, leaves and fruits to depend on it. 3. Synthesis. The root system synthesizes many endogenous hormones to meet the physiological needs of vegetable growth.
1.2.Maintenance techniques for vegetable root systems: 1. Strengthen the maintenance of vegetable plant leaves “Roots rely on leaves for nourishment, and leaves rely on roots for growth”. The root system and leaves of vegetables are interdependent, interdependent, mutually promoting and indispensable. We must focus on protecting the lower leaves, and be gentle when beating the leaves, and don’t beat too many at a time. At the same time, we must strengthen pruning management, ensure a reasonable plant shape, improve the light exposure of leaves; improve plant resistance, prevent diseases and pests, and ensure leaf health and normal photosynthesis.

1.3 Create good conditions for vegetable growth. The soil should be fertile, well-ventilated, and low in organic fertilizer. Relying on various chemical fertilizers to produce vegetables will deteriorate the physical and chemical properties of the soil, making it difficult for the root system to expand and poorly permeable. In particular, poor permeability caused by heavy water in winter often causes root rot. Therefore, soil fertilization is a key link in vegetable production. The following three aspects should be paid attention to in fertilization: (1) Organic fertilizers should be applied more. Increasing the application of organic fertilizers is undoubtedly an important means to increase the organic matter in the soil and improve the soil structure. Generally, 2-3 tons of organic fertilizer can be applied per mu of vegetables to increase the organic matter content in the soil, improve the soil aggregate structure, and improve the air permeability of the soil. (2) Pay attention to scientific formula fertilization. For new vegetable plots and vegetable plots with poor soil fertility, various nutrient elements are lacking, especially medium and trace elements. They must be supplemented in advance according to the fertilizer requirements of different vegetables to avoid the symptoms of nutrient deficiency in vegetables. When applying organic fertilizers at the base, 80-100 kg of compound fertilizer can be applied in combination. (3) Apply more biological fertilizers. A large number of experiments have shown that biological fertilizers can significantly improve soil structure, increase soil fertility, and promote the growth and development of organic vegetable roots. Therefore, supplementing biological fertilizers is an important measure to enhance soil fertility and promote root growth. When applying organic fertilizers, 200 kg of biological fertilizers can be applied at the same time. This will not only significantly improve the soil aggregate structure and physical and chemical properties, inhibit the occurrence of vegetable root diseases (especially various soil-borne diseases), but also significantly increase production and income.
1.4 The ground temperature should be suitable. The ground temperature will significantly affect the growth and development of roots. Therefore, when planting organic vegetables, keep them at a distance to facilitate ventilation and light transmission. The above is the maintenance technology of vegetable roots. The root system of vegetables has the function of synthesizing endogenous hormones and absorbing and supplying water and inorganic salts. Therefore, the quality of the root system directly determines the growth and yield of vegetables.