1、 Breeding environment

1. Moisture: perilla can withstand waterlogging and is suitable for growing in a slightly wet environment. It needs to be hydrated in time at ordinary times. In midsummer, the water evaporates quickly and needs more watering. In rainy season, drainage work should be taken without ponding

2. Light: when curing, if conditions permit, it should be placed in a place with good sunshine, which can withstand shade to a certain extent. In hot weather, shading measures should be taken

3. Fertilizer: sufficient base fertilizer shall be applied during cultivation. During the growth period, organic fertilizer shall be applied 3-5 times according to its growth, and leaf fertilizer can also be sprayed appropriately

3、 Pest control

1. Spot blight: it will harm the leaves after occurrence, and large patches of disease will appear on the leaves. At ordinary times, it is necessary to ensure adequate ventilation and pay attention to drainage. Wettable zinc substitutes should be used to solve the problem at the beginning of the disease

2. Starscream: it often appears on the back of the leaf. There will be small yellow and white spots on the back of the leaf, which will seriously cause the loss of leaves. The diseased leaves should be cleaned up as soon as possible and sprayed with dimethoate emulsion