中文摘要：

采用室外盆栽的方法，在防风Saposhnikovia divaricata生长季节（6-9月）设200（SW）、300（MOW）、400（MIW）和450mm（CK）4个不同供水量，研究其对防风生长发育和主要有效成分的影响．结果表明：200和450mm供水都不利于防风的生长发育，400mm供水的防风根质量、地上质量和总质量均较高，与其他处理差异极显著；升麻素苷和5-O-甲基维斯阿米醇苷含量随着供水量的减少呈增加趋势；总色原酮产量以400mm供水量处理最高，分别是MOW、CK和SW的1．42、2．00和3．04倍．在生长季节降水量300—400mm区域内，防风地上部分与地下部分生长协调，产量高，品质好；根冠比为0．6670～0．7178，平均单株根干质量为9．65～t4．54g，平均单株总色原酮产量为0．07985—0．11324g·株^-1．

英文摘要：

The effects of water supply of Saposhnikovia divaricata on during growing season （from June to September） were investigated plant growth and active ingredients by pot planting experiment. Plants were subjected to four water supply treatments, SW, MOW, MIW and CK corresponding respectively to 200,300,400 and 450 mm of mean precipitation in growing season. The result showed that 200 and 450 mm could produce unfavorable effects on the growth of S. divaricata. The root biomass, over ground biomass and total biomass in MIW were relatively higher than others, which had significant difference. The contents of prim-O-glusylcimifugin and 5-O-methylvisammioside increased with decreasing water supply. The yield of total chromones was highest in MIW, which was 1.42,2. 00,3.04 times of those of MOW, CK and SW,respectively. The 300 and 400 mm of mean precipitation in growing season could promote the growth of shoots and roots, higher yield and better quality, which the ratio of root/shoot was between 0. 667 0 and 0. 717 8,the mean root dry mass was between 9.65 and 14. 54 g,and the total chromones yield was between 0. 079 85 and 0. 113 24 g per plant.