| Effects of nitrogen fertilization managements on nutrient accumulation, transport and yield of rice under soda saline\|alkali paddy field |
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| DOI：10.7606/j.issn.1000-7601.2021.01.14 |
| Key Words: nitrogen fertilization managements nutrient accumulation nutrient transport rice yield soda saline\|alkali paddy field |
| Author Name | Affiliation | | LV Yandong | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | XU Lingqi | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | JIANG Hongfang | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | LAN Yuchen | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | AN Yiliang | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | CUI Zhiyuan | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | ZHANG Jianing | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | ZHAO Haihong | Jiamusi Branch Academy of Heilongjiang Academy of Agricultural Sciences, Jiamusi, Heilongjiang 154007,China | | LI Hongyu | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | QIAN Yongde | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China | | GUO Xiaohong | College of Agronomy, Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Germplasm Improvement and Cultivation in Cold Regions of Heilongjiang Province, Education Department, Daqing, Heilongjiang 163319,China |
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| Abstract: |
| This study aimed to find out the effects of nitrogen (N) fertilization managements on nutrient accumulation, transport, and production efficiency of rice under soda saline\|alkali paddy field in western Heilongjiang province. Kenjing 7 and Kenjing8 (the japonica rice cultivar) were used as the experimental material in 2017 and 2018, five kinds of N fertilizer management were set up as: without N (N0), conventional N used by farmers (N1), balanced N application (N2), reduction of N (N3), and N backward (N4), the effects of N fertilization managements on NPK accumulation, transport, and production efficiency of rice were studied.The results showed that compared with conventional N used by farmers, the accumulation of N, P, and K in plants at heading and mature stages were significantly increased by balanced N application and reduction of N, but the above results of N backward were opposite. The transport capacity, transport efficiency, and harvest index of N, P, and K were improved at the heading and the mature stages by balanced N application and reduction of N. Balanced N application increased the most, transport capacity of N, P, and K increased by 55.54%, 60.03% and 40.07%, respectively, transport efficiency of N, P, and K increased by 12.75%,19.72% and 14.26%, respectively, harvest index of N, P, and K increased by 6.04%, 5.13%, and 2.08%, respectively. Additionally, potassium uptake of 100 kg rice grain＞N uptake of 100 kg rice grain＞P uptake of 100 kg rice grain, N, P, K uptake of 100 kg rice grain all showed balanced N application＞reduction of N＞conventional N used by farmers＞N backward＞without N, and rice production efficiency of N,P,K showed contrary trend. Balanced N application and reduction of N were beneficial to improving the nutrient accumulation and utilization efficiency of rice in soda saline\|alkali paddy field. |
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