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First, the reasons for the uneven coloring of tomatoes and the best solution: First of all, there is a relationship with the variety of tomatoes. The varieties of tomatoes vary, and the internal quality factors and stress resistance of each variety are not the same. Therefore, the appearance of external phenomena is different. For example, large-scale fruit Xifen No. 3, early-maturing and high-yield, strong drought resistance, anti-virus and disease. There are also varieties such as Nongda 704, Liaofenzasan, Zhongnong 4 and so on, all of which are relatively resistant varieties. Therefore, growers should carefully consider the variety. Second, there is excess nutrition. From the young fruit stage to the fruit harvest stage, the nitrogen fertilizer is in excess, and the chlorophyll formation is more likely to inhibit the formation of lycopene, and yellow or green patch spots appear on the surface of the fruit. This phenomenon is mainly due to the excessive use of base fertilizer nitrogen fertilizer, phosphorus and potassium fertilizer deficiency, resulting in tomato plant leggy. If you can use the basic microbial fertilizer microbial fertilizer in the base can activate the insoluble phosphorus and potassium elements in the soil to provide balanced nutrients to tomatoes, promote the accumulation of nutrients conducive to the formation of lycopene. And it can effectively prevent premature aging of plants. Again, potassium and boron are lacking. Potassium is a quality element that determines the coloration of tomatoes and the transport of carbohydrates and amino acids. Boron is a breeding element that determines the fruit setting rate of tomatoes, promotes the formation of carbohydrates and amino acids, and reduces cluster necrosis of the top growing point and the combined necrosis of stems. During the fruit enlargement period, the golden treasure sweetener is sprayed, which can supplement the trace elements such as potassium, calcium, boron, etc., increase the conversion rate of photosynthesis, and facilitate the accumulation of sugar. Finally, there is a large temperature difference between day and night. During the fruit coloring period, the temperature of the tomatoes is higher than 32°C and lower than 8°C, which is not conducive to the formation of lycopene. The yellow-green spots formed on the surface of the fruits at these two temperatures are yellow and green even if the tomatoes are adapted to this temperature. Spots cannot disappear. The nighttime temperature of the greenhouse is too high and the respiratory intensity is increased, which is not conducive to the accumulation of nutrients. Therefore, the temperature is controlled at 25~30°C, and the night temperature is controlled at 15°C.