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(1) The occurrence of wilting in the soil The lack of water in the soil will increase the concentration of the soil solution. When the water absorbed by the plant from the soil cannot satisfy its transpiration, wilting will occur. The wilting occurs more severely at noon and can be resumed at night. The temporary wilting in a short period of time has little effect on the growth of the plants. However, if the wilting occurs for a long time, the normal physiological activities of the plants will be affected, and the plants will die when they are severe.
(2) The occurrence of ion antagonism and interaction with soil water increased the concentration of soil solution. Antagonism or interaction of ions at high concentrations may cause nutritional deficiency or excess symptoms in vegetables.
(3) When the water burns on the day of burn injury, the air humidity is low, and the transpiration of the leaves is reduced. When the temperature of the leaves is excessively increased, the leaves will burn.
Excessive soil moisture hazards:
On the one hand, too much soil moisture will cause insufficient oxygen supply to the soil and affect the root activity of vegetables. On the other hand, soil microorganisms produce a large amount of harmful substances when they are anaerobicly respired, which causes the root absorption function of vegetables to be affected and the stems and leaves on the ground are yellow and even die. At the same time, sudden drought and water shortages in the soil can also cause falling, fruiting and fruit cracking.
Soil moisture discomfort on plants
The harm caused by too little soil moisture:
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