请用科技语言修改下面内容：S Miltiorrhiza seeds of integrity and similar size were selected and then sterilized for 10 min with 10 sodium hypochlorite vv After rinsing with distilled water these seeds were sown int

S. Miltiorrhiza seeds with uniformity in size and integrity were carefully selected and subjected to a 10-minute sterilization process using 10% sodium hypochlorite (v/v). After thorough rinsing with distilled water, the seeds were planted in plastic pots (30 cm diameter × 20 cm height) containing 0.9 L of vermiculite that was previously sterilized. The experiment was divided into three distinct groups, with sowing in February, May, and July, respectively, and were marked as TF, TM, and TJ. At the time of the drought treatment, the S. miltiorrhiza plants in the three groups were in the seedling, nutritional growth, and reproductive growth stages, respectively. For each experimental group, 42 pots with comparable growth potential were selected, and subdivided into 7 treatments, each of which was replicated 6 times