| Local main cultivar of “Xindaping” was used to investigate the effect of removing film on tuber yield, quality and water movement of potato under whole film mulched cultivation. The results indicated that the tuber yield, yield components and quality of potato were improved for film removing on 75 days after planting. Compared with covering film during the whole growth period (T5), tuber yield in treatments of film removing on 60 days after planting (T1), film removing on 75 days after planting (T2), 90 days after planting (T3), and 105 days after planting (T4) were increased by 4%, 28%, 26%, and 10%, respectively. The tuber yield in treatment T2 was the highest. The quality of tuber was improved by removing film. Compared with T5, T1, and T2 treatments, T3 and T4 significantly increased the soluble sugar, soluble protein, amino acid, Vc and starch content, while decreased the content of organic acid. Generally, T2 was the better treatment in increasing both the yield and quality of film mulched potato. |