Study on influence of arbuscular mycorrhizal fungi Pinellia ternatayield and chemical composition Fungal population structure and its biological effect in rhizosphere soil of continuously cropped potato. Effect of Organic Fertilizer and Mineral Fertilizer on the Tuber Yield of Curcuma longa L. A Transgenic Study on Affecting Potato Tuber Yield by Expressing the Rice Sucrose Transporter Genes OsSUT5Z and OsSUT2M Expression of auxin synthesis gene tms1 under control of tuber-specific promoter enhances potato tuberization in vitro Effects of Soil Aeration on Potato Yield and Its Physiological Mechanism