| Effects of fertilization, ridging and variety on absorption and allocation of nitrogen, phosphorus, and potassium in newly cultivated potato on the Loess Plateau |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2022.02.18 |
| Key Words: potato cultivation measures varieties nirogen, phosphorus and potassium uptake and allocation Loess Plateau |
| Author Name | Affiliation | | WANG Kaibo | State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, Shaanxi 710061, China | | CHEN Yiping | State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, Shaanxi 710061, China | | ZHENG Taibo | Institute of Yan’an Agricultural Science Research, Yan’an, Shaanxi 716000, China | | WEI Rong | Xi’an Institute for Innovative Earth Environment Research, Xi’an, Shaanxi 710061, China | | SUN Qi | Xi’an Institute for Innovative Earth Environment Research, Xi’an, Shaanxi 710061, China | | LI Yuan | Institute of Yan’an Agricultural Science Research, Yan’an, Shaanxi 716000, China | | SHANGGUAN Zhouping | Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China | | ZHANG Yongwang | College of Life Sciences, Yan’an University, Yan’an, Shaanxi 716000, China |
|
| Hits: 854 |
| Download times: 558 |
| Abstract: |
| To increase the potato yield of newly cultivated land on the Loess Plateau and determine the appropriate amount of nitrogen, phosphorus and potassium fertilizer, a typical newly cultivated land was selected in Yan’an area of the Loess Plateau from 2019 to 2020. The absorption and allocation of nitrogen, phosphorus, and potassium in potato under different cultivation measures and varieties were studied. The experiment included 7 treatments: Kexin 1 + NPK (inorganic fertilizer; N: nitrogen, P: phosphorus; K: potassium) + flat cultivating (CK), Kexin 1 + NPK+ ridging (T1), Kexin 1 + NPKM (inorganic fertilizer + organic fertilizer) + flat cultivating (T2), Kexin 1 + NPKM+ ridging (T3), Longshu 7 + NPKM+ ridging (T4), NK001/ Jizhangshu 8 + NPKM+ ridging (T5), and Qingshu 9 + NPKM+ ridging (T6). The results showed that the contents of N, P and K were the highest in potato tuber, the aboveground part was the second, and the root system was the lowest. The difference of varieties had a significant effect on the allocation pattern of N content in different parts of potato but had little effect on the allocation pattern of P and K content. In comparing with Kexin 1(T3), the tuber nitrogen content of Longshu 7(T4) and Qingshu 9 (T6) decreased by 47.5% and 46.6%, respectively. Ridging and application of organic fertilizer did not significantly change the uptake and allocation pattern of N, P and K in newly cultivated land, but cultivated varieties had significant effects on N, P and K uptake. The uptake of N, P and K in potato varieties Longshu 7 (T4) and Qingshu 9 (T6) were 1.9 times and 1.3 times, 2.2 times and 1.4 times, 2.5 times and 1.7 times higher than that of local main variety Kexin 1 (T3), and the allocation of N, P and K in aboveground part of potato were also significantly higher than that of Kexin 1. The average N, P2O5 and K2O uptake of potato in the newly cultivated land in the study area was 50.8, 22.5, 161.3 kg, respectively. Without considering the application of organic fertilizer, the recommended amount and proportion of N, P2O5 and K2O would be 142∶145∶320 kg·hm-2. |
|
|
|