| Effects of different coverage cultivation and balanced fertilization on yield and water use efficiency of potato in the dry-land |
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| DOI：10.7606/j.issn.1000-7601.2017.01.08 |
| Key Words: all-film covering ridge sowing cultivation balanced fertilization potato yield water use efficiency |
| Author Name | Affiliation | | ZHANG Ping-liang | Gansu Academy of Agricultural Sciences, Dryland Agriculture Institute, Lanzhou, Gansu 730070, China
Key laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China | | GUO Tian-wen | Gansu Academy of Agricultural Sciences, Dryland Agriculture Institute, Lanzhou, Gansu 730070, China
Key laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China | | LI Shu-tian | Chinese Academy of Agricultural Sciences, Institute of Agricultural Resources and Regional Planning, Beijing 100081, China | | LIU Xiao-wei | Gansu Academy of Agricultural Sciences, Dryland Agriculture Institute, Lanzhou, Gansu 730070, China
Key laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China | | ZENG Jun | Gansu Academy of Agricultural Sciences, Dryland Agriculture Institute, Lanzhou, Gansu 730070, China
Key laboratory of High Efficiency Water Utilization in Dry Farming Region, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Field trials were conducted to study the effects of different coverage cultivation and balanced fertilization on yield and water use efficiency of dryland potato. The results showed that all-film covering ridge sowing cultivation was favourable for the synthesis of carbohydrates of potato, resulting in increase in dry matter accumulation of potato. And marked effect was detected for balanced fertilization of the N, P and K. Compared with exposed land cultivation, potato yields of all-film covering ridge sowing cultivation and all-film covering sowing cultivation were increased by 43.4%～60.7% and 18.8%～32.5%, and water use efficiency by 59.4%～79.6% and 38.3%～50.3%, respectively. In the nutrient consumption of 210、105, 90 kg·hm-2 of N, P2O5 and K2O case, potato yield and water use efficiency of all-film covering ridge sowing treatment were the highest. Collectively, balanced fertilization can significantly increase yield and water use efficiency of potato in all-film covering ridge sowing cultivation. |
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