1. Reason: Coriander is not resistant to high temperature. Once the temperature exceeds 20 degrees, the coriander will grow very slowly.If the temperature reaches 30 degrees, coriander will stop growing and cause the leaves of coriander to turn yellow and white.
2. Treatment method: If the temperature is too high, make some appropriate temperature adjustments, and then reduce the temperature as soon as possible to the temperature suitable for the growth of coriander, about 18 degrees is appropriate.
1. Reason: The base fertilizer has not been fermented and decomposed, resulting in a large amount of heat, or too much compound fertilizer, resulting in root burning, causing the leaves of coriander to turn yellow and white.
2. Treatment method: Fertilization should be stopped first, and then water should be poured into the soil, so that the excess fertilizer can be discharged out of the pot with the water flow.Don't fertilize too much in the later period, just the right amount.
1, reason: coriander will also have pests and diseases, such as red spiders.Red spiders will suck the juice of coriander on the back of coriander leaves, causing the whole leaves to turn yellow and white.
2. Treatment method: Spray more foliar fertilizer at ordinary times to increase the resistance of coriander.It is necessary to spray chemical insecticides for treatment after insect infestation.
