通过观测陕西耀州产1年生和2年生黄芩(Scutellaria baicalensis Georgi)的物候期及2年生植株生长的动态变化,对黄芩的生长发育规律进行了研究。结果表明,1年生黄芩的各物候期均晚于2年生黄芩,其生育天数和生长天数均较短;2年生黄芩的地上部分和根系均有2个较快的生长时期,分别出现在生殖生长期前后;地上部分的干质量和鲜质量都有2个生长高峰,均出现在7月20日和9月20日,而根系的干质量和鲜质量则持续增长;2年生黄芩的根冠比在10月20日达最大值(0.50);2年生植株的株高、根直径及根系的干质量和鲜质量等均优于1年生植株。依据实验结果提出了黄芩优质高产的栽培技术。

The rhythm of growth and development of Scutellaria baicalensis GeorgiinYaozhou of Shaanxi Province was studied based on observing phonological phases of one-year-old and two-year-old plants and analyzing dynamic growth changes of two-year-old plants. The results showed that phonological phases of one-year-old plants were later than that of two-year-old plants, and its days of reproductive and growth stage were shorter. Shoot and root systems of two-year-old plant shad two quick growing stages, which occurred before and after reproductive stage respectively. Both dry and fresh weights of shoot had two growth peaks at July 20th and September 20th, but that of root system increased continuously. Root-shoot ratio of two-year-old plants increased rapidly and reached to maximum value (0.50) at October 20th. Seedling height, root diameter, root dry and fresh weights of two-year-old plants were better than that of one-year-old plants. The high-yielding cultivation technology of S. baicalensis in Yaozhou was provided based on experiment results.