不同钾肥用量对白花丹参产量及药材品质的影响

摘要

In order to protect and utilize Salvia miltiorrhiza Bunge f.alba, and improve its cultivation techniques , 5 different potassium fertilizer treatments were set to study the effects on its growth and develop-ment, yield, quality and nutrient utilization .The results showed that potassium fertilizer had close relation-ships with yield of Salvia miltiorrhiza Bunge f.alba.Suitable rate of potassium fertilizer could promote its plant growth .However , with the increase of yield and application rate of potassium fertilizer , the potassium use rate and active components in root decreased , while the dry matter and output of active components in-creased compared with CK .The optimal application rate of potassium fertilizer for Salvia miltiorrhiza Bunge f . alba was 253 .6 kg/hm2 .%为保护和开发白花丹参，完善其栽培理论，本研究设置5个不同施钾处理，对白花丹参进行人工栽培试验，测定其生长发育、产量、品质、养分利用情况。结果表明，钾肥与白花丹参产量关系密切，适当施用钾肥可促其生长。然而，随施钾量和产量的增加，钾素的利用率下降，根中有效成分含量也降低，但干物质和有效成分产量均比对照处理提高，白花丹参最适施钾量为253．6 kg/hm2。