当地的生态环境 首先考察该品种是否适合当地的气候条件、土壤条件、灌溉和排水的条件，以及其他品种生长习性的特殊要求。
The local ecological environment first examines whether the variety is suitable for local climatic conditions, soil conditions, irrigation and drainage conditions, as well as the special requirements of the growth habits of other varieties.
比如，西红花以球茎繁殖，球茎10克以上才能开花，8克以下一般不开花，在长江中下游地区种植，每年可以繁殖出较大的球茎作种，而且收花较多。
For example, Crocus sativus propagates with corms, which can only blossom at more than 10 grams, but generally do not blossom at less than 8 grams. If it is planted in the middle and lower reaches of the Yangtze River, larger corms can be produced for planting every year, and more flowers can be harvested.
在西北、华北和东北因温度低，露地栽培不能正常生长，必须在温室或保护地才能越冬，而且花产量非常低，种球越种越小，必须年年购种，效益很差，在北方地区种植西红花基本是不可行的。

Because of the low temperature in Northwest, North China and Northeast China, open-field cultivation wushui.37ix.com.cndiaosurw.37ix.com.cnzhagungp.37ix.com.cnzhibanx.37ix.com.cnwalengzhi.37ix.co

m.cn xianweisu.37ix.com.cncan not grow normally. It is necessary to overwinter in greenhouse or protected area, and the flower yield is very low. The smaller the bulb is, the smaller the bulb is, the lower the benefit is. It is basically impossible to plant Crocus sativus in North China.