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为了探讨药用植物金荞麦适宜的播种密度,以金沙县平坝乡野生金荞麦居群为材料,在温和气候区进行了不同播种密度试验。结果表明:低播种密度(株行距为30～50 cm×50 cm)下,有利于金荞麦的分枝,株高受限制;而高播种密度(株行距为10～30 cm×50 cm)下,植株高的金荞麦占优势,分枝受限制;低播种密度下,金荞麦根茎净增鲜产随着密度的增加而提高,高播种密度下,金荞麦根茎净增鲜产随着密度的增加而降低;在试验条件下生产的金荞麦根茎,其水分、总灰分、醇溶性浸出物含量均符合药典标准,表儿茶素和醇溶性浸出物含量在株行距为40 cm×50 cm时最高。为兼顾产量及品质,建议生产上金荞麦的适宜种植株行距以30 cm×50 cm左右较为适宜。
In order to explore the appropriate sowing density of the medicinal plant Fagopyrum sibiricus, the populations of wild Fagopyrum ostreatus in Pingba Township, Jinsha County were used as materials to conduct different sowing densities tests in a mild climatic zone. The results showed that the low sowing density (spacing of 30-50 cm × 50 cm) was favorable to the branch growth of F. wallichiana and the plant height was limited. However, the plant height was limited under high sowing density (spacing of 10-30 cm × 50 cm) , The plant height of the buckwheat dominance, branching is limited; low sowing density, net buckwheat rhizome increased with the increase of density, high sowing density, the net buckwheat rhizome yield increase with the density Increased, and decreased. The contents of water, total ash and alcohol-soluble extracts of Fagopyrum Buckthorn rhizome produced under the experimental conditions all met the standards of Pharmacopoeia. When the row spacing of epicatechin and alcohol-soluble extracts was 40 cm × 50 cm highest. To take into account the yield and quality, it is recommended that the production of golden buckwheat suitable plant spacing of about 30 cm × 50 cm is more appropriate.