1. Yellow rot: after the occurrence of this disease, watered out spots will appear in the vein part of the leaves, and in the later stage, yellow or brown will appear, leading to the rotten bulbs. Choose the robust seed ball to plant, disinfect the soil with formalin solution before planting, and spray carbendazim when the disease occurs, which can play a therapeutic role.
2. Sclerotinia: the disease will be invaded by the bulbs, resulting in yellow stripes or round spots on the damaged leaves. The healthy seed ball should be selected for planting. Before planting, the soil should be disinfected with pentachloronitrobenzene. When the diseased plant is found, it needs to be pulled out and burned in time.
3. Rhizomatosis: this disease will cause white tumor in the root, which will affect the later growth and development. Disinfection and sterilization of soil can reduce the possibility of the disease.
4. Gray mold: This is a fungal disease, which causes a layer of gray mold on the surface of the plant, mainly due to the humidity and airtightness. The soil was disinfected before the onset of the disease and then sprayed with Bordeaux solution.
In terms of insect damage, it is mainly affected by acaroid mites, and the damage is relatively large, which leads to problems in plant bulbs and flowers and leaves on the ground, and also spreads other diseases. Remove the infected leaves and spray with abamectin.
