Effect of Different Substrates on the Growth and Photosynthesis of Kaempferia rotunda in Potted Cultivation
Abstrcat The red soil, peat and leaf mold were mixed at different ratios and used as substrates to culture Kaempferia rotunda to analyze the nutrient characteristics of nitrogen, phosphorus and potassium in the mixed substrates and their effect on the root growth and photosynthesis of K. rotunda with different sizes of roots. The results showed that the substrate mixed with the red soil, leaf mold and imported peat at a volume ratio of 1:1:1 was moderate in pH, EC and the contents of nitrogen, phosphorus and potassium, and obviously promoted the growth and photosynthesis of K. Rotunda with large, moderate and small sizes of the roots. However, the substrates, such as red soil, imported peat, a mixture of red soil and red soil, and a mixture of leaf mold and imported peat did not all increased the growth and photosynthesis of K. rotundad. The results will provide scientific basis and reference for the potted cultivation of K. rotunda.