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Detailed Explanation of Key Cultivation Techniques for Tianzi Series Purple Eggplant

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Purple eggplant has a relatively large cultivation area in China's Yellow River basin and regions to the north, and is one of the main vegetable varieties marketed in summer and autumn in northern regions. In recent years, the increase in protected cultivation area has also led to a year-by-year increase in the cultivation area of protected eggplant, playing an important role in solving year-round vegetable supply, meeting consumer demand, and earning foreign exchange through exports. Severe incidence of Verticillium wilt in protected cultivation of purple eggplant is a major factor restricting production efficiency. Due to the leverage effect of market prices, in main purple eggplant production areas, continuous cropping and crop rotation difficulties have led producers to spare no expense in increasing production

Purple eggplant has a relatively large cultivation area in China's Yellow River basin and regions to the north, and is one of the main vegetable varieties marketed in summer and autumn in northern regions. In recent years, the increase in protected cultivation area has also led to a year-by-year increase in the cultivation area of protected eggplant, playing an important role in solving year-round vegetable supply, meeting consumer demand, and earning foreign exchange through exports. Severe incidence of Verticillium wilt in protected cultivation of purple eggplant is a major factor restricting production efficiency. Due to the leverage effect of market prices, in main purple eggplant production areas, continuous cropping and crop rotation difficulties have led producers to spare no expense in increasing production costs, adopting soil disinfection or grafting cultivation methods, with the result that a considerable portion of the increased income is offset. In recent years, while observing the planting of purple eggplant hybrid offspring, the author, in combination with actual production, has systematically organized a set of cultivation techniques aimed at guiding vegetable farmers' production. Now, taking Tianzi series purple eggplant as an example, the details are as follows:

1. Requirements of Tianzi series purple round eggplant for environmental conditions:

1.1. Temperature: Tianzi series purple eggplant seeds treated with alternating temperature of 20-30°C for germination require 5-6 days to sprout, and emerge 3-5 days after sowing; after soaking seeds in 50°C hot water and direct sowing for seedling raising, emergence requires 10-15 days. During the seedling stage, a daytime temperature of 25°C and a nighttime temperature of 15-20°C is suitable. The optimum growth temperature is 20-30°C. When the temperature drops below 20°C, fertilization and fruit development are poor; below 15°C, flowers are prone to dropping; below 12°C, growth stops. 10-15

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