1, rain, irrigation, too much water, resulting in too much water in the roots, if the drainage is not timely, the roots of pepper will rot.
2. Insufficient illumination, low temperature and high humidity, excessive soil viscosity, soil caking and poor ventilation.
3. Because the soil where crops are planted is too high, ditching, fertilizing or weeding on both sides will damage the root system.
4, long-term use of chemical fertilizers, so that a large number of bacteria breed in the soil, harmful substances can not be discharged.
Control methods of pepper root rot
1. Agricultural measures
1. 1 Plant early-maturing varieties according to local conditions. Applying fully decomposed organic fertilizer and adopting formula fertilization technology can reduce the incidence rate. Leguminosae and Gramineae crops rotate for 3-5 years.
1.2 Select disease-free seeds and collect seeds from disease-free fruits. Soaking the root system of pepper with special (stock solution) such as gold planting before planting, and then planting, can make the root system of pepper strong and the pepper plants dense and lush.
After 1.3 planting, the temperature is controlled at 20 ~ 30℃, the ground temperature is 25℃, and the humidity is not higher than 90%. Make the seedlings grow sturdily
1.4 adopts high ridge cultivation. Avoid flooding, drain water in time after rain to prevent water accumulation in the field. After irrigation and rainfall, intertillage the soil in time to enhance soil permeability and promote root wound healing and root development.
2. Microbial control
When used in pepper field, it can fix nitrogen, dissolve phosphorus and potassium, make full use of nitrogen in the air, produce corresponding enzymes and acids through the growth and metabolism of beneficial bacteria, and decompose insoluble phosphorus and potassium in soil, which is beneficial to plant absorption. Make plants "strong" and enhance disease resistance. For example, the special use method of golden root rot is mixing soil or irrigation with water or drip irrigation.