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1992年以来对呼市地区种植的草红花进行了多年生物学特性及田间密度与产量等方面的试验观测。结果发现 ,草红花在本地区旱作条件下 ,生育期约 110d ,植株高度 75～ 90cm ;4月 1日播种 ,7月 5日开花 ,8月 3日开始种子成熟 ,密度 15 6株 /10m2 为宜 ,花产量达 9 7kg/亩 ,种子产量 16 3 5 7kg/亩。同时发现 ,草红花出苗快 ,幼苗耐寒性强 ,宜早播 ;并提出苗期应注重防治蚜虫 ,生长期间应及时灌水防旱 ,拔除有刺植株 ,及时采收花及种子
Since 1992, Hibiscus planted in Hohhot has been studied for many years in biological characteristics, field density and yield. The results showed that when the safflower in the region under dry conditions, the growth period of about 110d, the plant height of 75 ~ 90cm; sown on April 1, July 5 flowering, August 3 began seed maturity, the density of 15 6 plants / 10m2 is appropriate, flower yield reached 9 7kg / acre, seed yield 16 3 57kg / acre. At the same time, it was found that the safflower emerged quickly, the seedling was cold-hard and suitable for early sowing. It was suggested that aphids should be paid attention at the seedling stage, irrigation should be timely prevented during drought period, prickly plants should be removed and flowers and seeds should be harvested in time