不同基质对盆栽海南三七生长和光合作用的影响

Effect of Different Substrates on the Growth and Photosynthesis of Kaempferia rotunda in Potted Cultivation

以不同比例红壤、腐叶土和进口泥炭混合作为海南三七的盆栽基质进行盆栽试验,研究不同基质条件下,基质的氮磷钾养分特征及其对不同大小根茎海南三七生长和光合作用的影响。结果表明,红壤、腐叶土和进口泥炭(体积比1︰1︰1)混合基质的p H、EC值、氮磷钾养分含量适中,明显促进大、中、小根茎海南三七的生长和光合作用;而红壤、进口泥炭、红壤与腐叶土、红壤与进口泥炭混合基质对大、中、小根茎海南三七的生长和光合作用不全是促进。本研究筛选大、中、小根茎海南三七的盆栽基质,为海南三七根茎的盆栽生产提供科学依据和参考。

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.