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| Research progress and thinking on water and fertilizer management in rice field |
| LI Yuanyuan1*, HE Ping1, MAO Heng2 |
| 1. School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046, China; 2. Xiaoshan District Agricultural and Rural Bureau, Hangzhou, Zhejiang 311201, China |
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Abstract Three aspects of environment and greenhouse gas emissions in paddy field, physiological growth index, yield of rice were summarized on the research status of water and fertilizer management. Reasonable water and fertilizer management techniques can promote the development of rice root structure and nutrient uptake, promote the physiological growth of rice, and increase rice yield. Meanwhile, nitrogen loss and greenhouse gas emission was reduced. According to summarizing the management mode of water-saving irrigation and optimized fertilization, the aim is to improve the utilization ratio of water and fertilizer in paddy fields, to establish planting mode with high yield, water saving and emission reduction of rice. Based on the previous studies, the problems existing in the water and fertilizer management mode of paddy field at present stage are mainly as follows, less consideration is given to the influence of environmental factors in the water and fertilizer management research. Less water and fertilizer coupling treatment in paddy field, which leads to significant differences in results and incomplete laws, and there is a contradiction between the water and fertilizer interaction on increasing yield and reducing pollutant emissions. At the same time, the importance of applying the latest and most advanced agricultural scientific and technological achievements(for example, sewage regeneration irrigation technology, integrated water and fertilizer technology)is emphasized to agricultural production practice, which is conducive to the efficient and green development of agriculture in China.
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Received: 27 May 2022
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ZHAO Di,, WANG Zhenhua,*, LI Wenhao,, ZHANG Jinzhu,, LYU Desheng,, ZHANG Jifeng,. Effects of alternate root-zone irrigation on physiological growth and yield of processing tomatoes in northern Xinjiang[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(8): 662-667. |
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