1, eggplant flowers can be divided into long column flowers and short column flowers. Long-column flowers can form normal fruits, while short-column flowers can't form normal fruits and generally fall off. The number of short stub flowers is related to varieties and environmental conditions. Such as drought, water shortage, lack of fertilizer, insufficient light and low temperature, will increase the number of short flowers of eggplant and affect the yield.

2. The flowering and fruiting habits of eggplant are very regular. Generally, early-maturing varieties grow 6-8 leaves on the main stem, and middle-late-maturing varieties grow 9- 10 leaves on the main stem, that is, the first female flower is born, and the fruit is called "Meneggplant". The lateral branches produced by the axils of the main stem directly below the first flower are particularly thick and similar to the main stem, so they bifurcate to form a zigzag shape. After the main stem and lateral branches each have 2-3 leaves above the first flower, they branch and blossom, each bearing a fruit, which is called "antithesis". Then it blooms and bears fruit in the same way, which is called "four female eggplant" (or four-door barrel). After that, the eight branches were divided into two branches, and the result was actually called "Eight Winds". Branching and flowering of the upper layer are not necessarily regular, commonly known as "the sky". Judging from the flowering and fruiting habits of eggplant, there is great potential for increasing production. In production, we should try our best to create suitable environmental conditions to meet the needs of its growth and development and achieve the goal of high yield and high quality.

3, eggplant has the characteristics of intermittent fruit. Eggplant usually bears a batch of fruits, and then takes a break to blossom and bear fruit. In production, we should try our best to shorten the intermission period of eggplant and increase the yield. Requirements for environmental conditions 1. Temperature: Eggplant likes high temperature, which is a particularly high temperature-resistant vegetable among vegetables. The optimum breeding temperature is 25 ~ 30℃. If it is lower than 17℃, the growth will be slow, the flower bud differentiation will be delayed, and the elongation of pollen tube will be greatly affected, thus causing flower drop. The temperature below 10℃ will cause metabolic disorder; Below 5℃, it began to suffer from freezing injury. However, when the temperature is higher than 35℃, the flower organs will be stunted, especially when the temperature is high at night, the long-column flowers will decrease, the short-column flowers will increase, and the phenomenon of falling flowers will be serious. 2. illumination: eggplant is a short-day crop, and the sunshine time is not strict. But the requirement for sunshine intensity is higher. Generally, longer sunshine time and stronger light intensity are needed. The optical saturation point is 40000 lux and the optical compensation point is 2000 lux. Insufficient light intensity, color difference of purple eggplant, less long column flowers and serious falling flowers. 3. Moisture: Eggplant has large leaves, lush branches and leaves, strong transpiration and needs sufficient water. The relative water content of soil should reach 70% ~ 80%. The suitable air relative humidity for eggplant growth period is also 70% ~ 80%. The water requirement is low in the early growth stage and high in the flowering stage, reaching the peak before and after the eggplant harvest. When water is scarce, the growth of plants is small, the phenomenon of falling flowers is serious, the peel is hardened and colored, and small fruits and hard fruits often appear. But eggplant is afraid of waterlogging, and there is too much water, so plants are easy to grow white and get sick.

4. Soil: Eggplant roots are deeply and widely distributed, which is suitable for planting in fertile loam with good water retention, and sandy loam is better than clay loam. Clay with high groundwater level is easy to damage roots, and sandy soil with poor water retention is poor in growth. The suitable soil pH value is pH6-7. Eggplant is a kind of fertilizer-tolerant vegetable. In fertile soil, the first flower differentiation period is much earlier than that in barren soil, and the flowering period and initial harvest period are also earlier. Eggplant absorbs the most nutrients, followed by potassium and phosphorus. However, because young fruits are harvested, the supply of nitrogen still has a close impact on the yield. In addition, the demand of eggplant for calcium and magnesium is also necessary. The demand for nutrients in eggplant at each growth period is greater when it reaches the peak growth period, especially for potassium and nitrogen. Therefore, when fertilizing, phosphorus fertilizer is generally used as the base fertilizer; Only 1/3- 1/2 is used as base fertilizer for nitrogen and potassium, and the rest is used as topdressing when necessary. In a word, eggplant is a kind of vegetable that likes warm but not cold, water but not wet, light and not fat.