一串红花色鲜艳、花期长、易栽植 ,被广泛用作城市花坛秋季装饰的主体材料 ,但因其大部分品种在一般栽培条件下株形较高、茎瘦、花朵稀疏 ,降低了其观赏价值。对此一般采取反复多次摘心的方法来矮化植株 ,但这种方法费工较多 ,不适合大批量生产。因此 ,本试验试图利用生长调节 A bunch of safflower color bright, long flowering period, easy to plant, is widely used as the main material for urban autumnal decorations, but most of its cultivars under the general conditions of cultivation under high plant shape, thin stems, sparse flowers, reducing its Ornamental value. In this regard, the method of dodging plants is often repeated for many times, but this method requires more labor and is not suitable for mass production. Therefore, this experiment attempts to make use of growth regulation