1前言冬季如果大棚不加温,早熟辣椒栽培常常遭遇低温,这将影响辣椒花的生长发育,制约辣椒的产量。夜温适宜,辣椒花朵较小。而在较低夜温条件下,辣椒花则将发育形成大子房(Ryliski,1986)。Pressmanetal(1998a)报道,当夜温从20℃降到12℃或10℃时,甜椒花的子房明显增大。在低夜温 1 Introduction Winter if the greenhouse does not warm, precocious pepper cultivation often experience low temperatures, which will affect the growth of pepper flowers, restricting the production of pepper. Suitable night temperature, pepper flowers smaller. In the lower night temperature conditions, chili flower will develop into large ovary (Ryliski, 1986). Pressmanetal (1998a) reported that when the night temperature was lowered from 20 ° C to 12 ° C or 10 ° C, the ovary of sweet pepper flower was significantly enlarged. At low night temperature