Root cultivation and root protection to achieve high yield

Any crop is born from the root and dies from the root. The strong and developed root system is the basis of crop growth and high yield. Nowadays, with frequent soil problems, high yield and high efficiency can be achieved only by doing a good job of root maintenance, root protection and root strength of crops.

? White root is strong, yellow root protects life, black root is sick, gray root is deadly.

White root is usually the tip of new root or old root. These roots have strong oxygen secretion capacity, which can oxidize the surrounding soil and keep the root white. White root has a strong physiological function, vitality and absorptive capacity are very strong, so white root is strong.

Yellow root life-saving yellow root generally appears on the surface of the old root and the base of the root, these roots because of aging, the outer cell wall thickens into a yellowish-brown iron film, this iron film has a protective effect and can prevent toxic substances from soaking into the inside of the root, but the absorptive capacity of the root system is greatly weakened, so it is said that the yellow root protects life.

After Hagen became sick and flooded for a long time, due to the lack of oxygen in the soil, organic matter was decomposed, resulting in a series of toxic substances such as hydrogen sulfide. When hydrogen sulfide is combined with divalent iron, ferrous sulfide (black) is precipitated on the root surface, making the root black.

Ash root is fatal if the soil lacks iron, hydrogen sulfide can not be eliminated, which can inhibit the respiration and absorption function of root system, and cause root poisoning and death. The symptom of hydrogen sulfide poisoning is to pull up the root and observe that the root system is gray and smelly, so the gray root is fatal.

? A number of measures to promote strong roots of crops

Adjusting the soil pH value of the plough layer is unreasonable for many years, which leads to the change of the pH value of the plough layer, which is the root cause of current soil problems. It is suggested that after measuring the pH value of the plough layer in the laboratory, a special soil conditioning agent should be selected according to the situation.

Reasonable drainage and irrigation is suggested to adopt small water frequent irrigation or micro-irrigation or drip irrigation to protect the aggregate structure of soil and conducive to root growth. The drainage system of open-field crops is as important as the irrigation system in the rainy season, preventing both waterlogging and dead roots.

The selection of functional water-soluble fertilizer containing humic acid or amino acid plays a positive role in replenishing organic matter, increasing soil temperature, improving soil permeability, improving fertilizer utilization efficiency, root cultivation, root protection and root strength.

The proverb "there is water and fire under the hoe" means that hoeing (ploughing and loosening soil) can improve the drought tolerance of crops (with water) and effectively increase the ground temperature (with fire). Especially in the seedling stage, the root system is not yet fully developed. Ploughing and loosening soil is one of the indispensable measures to increase soil temperature, enhance soil permeability and promote root development. (Dong Huaqi)