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目前我国花椰菜制种基地主要在浙江温州、上海和福建等地,但这些地区种子成熟期,气温越来越高,呼吸作用增强,所结种子千粒重较低,而且单产较低。青海东部河湟灌区海拔较低(2100～2300m),气候温和,年均气温在5℃左右,7～8月份平均温度为16～19℃,最高温度26～28℃,极适宜花椰菜开花期15～20℃的温度要求,而且该地区8月份后气温逐步降低,种子灌浆较慢。日照时问长,年日照时间在2 52lh以上,适宜花椰菜长日照的要求。昼夜温差大(相差10～15℃),所制种子籽粒饱满,千粒重较高,是花椰菜等十字花科作物较理想的制种地区之一。2003年
At present, the base of cauliflower in China is mainly located in Wenzhou, Shanghai, Fujian and other places in Zhejiang, but the seed maturity of these areas is higher and the temperature is higher and the respiration is enhanced. The seed weight per plant is lower and the yield is lower. HeBei Irrigation District in the eastern part of Qinghai Province has a relatively low elevation (2100-2300m) with a mild climate with an average annual temperature of about 5 ℃. The average temperature in July-August is 16-19 ℃ and the highest temperature is 26-28 ℃, which is very suitable for cauliflower flowering period 15 ~ 20 ℃ temperature requirements, and gradually reduce the temperature in August after the region, the seed filling slower. Long sunshine when asked, the annual sunshine time in more than 2 52lh, suitable for cauliflower long sunshine requirements. Large temperature difference between day and night (a difference of 10 ~ 15 ℃), the seed full of seeds, grain weight is high, is one of the ideal seed production areas such as cauliflower cruciferous crops. Year 2003