以“艾玛土豆2号”马铃薯脱毒试管苗为试材，研究了不同栽培基质对西藏脱毒马铃薯原原种薯生产的影响。结果表明，以木屑、羊粪与蛭石按体积比为2∶1∶1的比例混配作为栽培基质时，脱毒马铃薯原原种薯单株结薯数最多，为2.93粒，较对照(蛭石单独作为栽培基质)增加0.30粒；单株种薯合格率较高，为78.5%，较对照降低1.0百分点；小区平均生产脱毒马铃薯原原种薯粒数最多，为310.63粒/1.2 m2，较对照增加12.09粒/1.2 m2；小区平均生产原原种薯合格率为78.4%，仅较对照减少0.1百分点，且其株高、茎粗、叶片数等性状均最优。建议在西藏地区脱毒马铃薯原原种薯生产中应用以木屑、羊粪、蛭石按体积比为2∶1∶1的比例混配的栽培基质。

The effect of different cultivation substrates on the production of Xizang virus-free potato was studied with “Emma potato 2” potato virus-free test tube seedling as the test material. The results showed that when the mixture of wood chips， sheep dung and vermiculite by volume ratio of 2∶1∶1 was used as culture substrate， the number of tuber per plant of the virus-free potato of pre-elite seed was the highest(2.93)， which was 0.30 grains more than that of the control (vermiculite was used as culture substrate alone). The qualified rate of seed tuber per plant was 78.5%， which was 1.0 percentage point lower than the control. The average number of seeds of the pre-elite seed potato was the highest in the plot， which were 310.63 seeds/1.2 m2， 12.09 grains/ 1.2 m2 more than the control. The average qualified rate of the pre-original seed potato was 78.4%， which was only 0.1 percentage point lower than the control. The plant height， stem diameter and number of leaves were 41.3 cm， 3.34 mm and 8.9 pieces， respectively. It is suggested that the mixture of sawdust， sheep dung and vermiculite by volume ratio of 2∶1∶1 was used in the production of virus-free potato of pre-elite seed in Xizang area.

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西藏自治区自然基金项目“木屑基质在西藏脱毒马铃薯原原种薯生产中应用探索与研究”(XZ 2018ZRG-94)；2020年日喀则市市级财政项目“高原地区脱毒马铃薯种薯生产技术研究”(日财农指[2020]7号)