Eggplant grows for a long period of time, with deep roots and leaves. It is a vegetable crop that requires more fertilizer and more fertilizer. Applying base fertilizer is the basis for high yield. If greenhouses are covered with plastic film, most fertilizers should be applied as base fertilizer because of the inconvenience of top dressing. The amount of fertilizer used in the old shed and the new shed is different. Because the old shed has more residual fat than the new shed soil, the new shed will be more fertilized than the old shed. Most of the old shed soil has excess nitrogen, phosphorus is rich, and potassium is insufficient. The approach that can be taken is (1) Apply 6,000 kg of organic fertilizer per 667 square meters. If it is an old shed, the application amount can be reduced by adding 20 to 30 kg of potassium sulfate. Organic fertilizer and potash fertilizer should be fully applied and then turned into soil. Special attention should be paid to the fact that the organic fertilizer must be fully decomposed, and it is best to use a specialized starter (such as a golden baby starter) for treatment. Not only can reduce the loss of nutrients, but also can completely remove organic bacteria harmful bacteria, eggs and other harmful substances. (2) It is better to use microbial fertilizers such as 1-2 kilograms of microbial fertilizer with Kumbae and mix with farmyard manure, chemical fertilizer or fine soil. Narrow Band UVB Light, Narrow Band UVB Lamps, UVB Narrowband Lamp Ningbo Sunfine UV lighting Co.,ltd. , http://www.uvlightings.com