1, yellow more regular round spots may be leaf spot disease. Leaf spot disease control measures: remove the pathogen; thoroughly sweep the fallen leaves and ground debris buried deep in the fertilization pit. Spray protection, 7 days after flowering and 20 days in time to choose to spray 1.5% doxycycline 300 to 500 times; 80% Dasheng wettable powder 600 times liquid; 75% Dakonin wettable powder 800 times liquid.

2, irregular light-colored spots may be some pests such as thrips and other symptoms of damage. You can use a magnifying glass to see if there are pests on the back of the leaves, and if there are, you can spray some insecticides.