增加灌溉频率提高了橡胶草的地下生物量及橡胶产量

he research studied effects of irrigation frequency and water stress on growth and yield of Russian dandelion. We applied single-factor experimental design to potted Russian dandelion,watering once every 3, 6, 9, 12 days with 400 ml volume. The results indicated: increasing irrigation frequency could increase underground biomass and rubber yield. While increasing water stress (when soil moisture gets down under 22.8%) might decrease rubber concentration. The highest water use efficiency of Russian dandelion is 9.6 gom-3. No correlation was found between irrigation frequency between sugar concentration and rubber concentration. Main conclusions: Although Russian dandelion need a lot of water to grow, rubber yield can\'t be affected by keeping soil moisture above 28.0%。The research provides a certain theory basis for irrigation technology for Russian dandelion in fields.