1、 Soil and water discomfort

Reason: daffodils can be cultivated in water or soil. If the water quality or soil used for cultivation is inappropriate, the leaves may turn yellow

Treatment method: select appropriate water quality or soil during cultivation and maintenance. The water quality can be slightly acidic water, or tap water can be connected out and used for hydroponic culture after standing for a period of time. The soil can be loose and fertile acid soil, and the soil should be changed once a year or two

2、 Improper temperature

Reason: temperature is also a very important point in maintenance. If the temperature is too high for a long time, the leaves will become dry and yellow. If the temperature is low for a long time, daffodils will be frostbitten and their leaves will turn yellow

Treatment method: keep the temperature well, try to keep the temperature at about 15-20 degrees, shade and cool down in summer and keep warm in winter

3、 Improper illumination

Reason: the growth of daffodils needs sufficient astigmatism. The long-term lack of sunshine will lead to the failure of nutrient synthesis, and the leaves will turn yellow in the long run. When the light is too strong, the leaves will burn and turn yellow

Treatment: give Narcissus enough astigmatism. When it is exposed to the sun in summer, it needs to be moved to a cool place in time

4、 Infectious diseases and insect pests

Cause: if diseases and insect pests are infected during maintenance, it may also cause the leaves to turn yellow

Treatment method: strengthen ventilation at ordinary times to prevent the occurrence of diseases and pests, and spray drugs according to the symptoms