文献类型： 外文期刊

作者： AL Aasmi, Alaa ¹ ; Li, Jiuhao ¹ ; Hamoud, Yousef Alhaj ² ; Lan, Yubin ³ ; Alordzinu, Kelvin Edom ¹ ; Appiah, Sadick Amoakohene ¹ ; Shaghaleh, Hiba ⁴ ; Sheteiwy, Mohamed ⁵ ; Wang, Hao ¹ ; Qiao, Songyang ¹ ; Yu, Chaoran ⁶ ;

作者机构： 1.South China Agr Univ, Coll Water Conservancy & Civil Engn, Guangzhou 510642, Peoples R China

2.Hohai Univ, Coll Agr Sci & Engn, Nanjing 210098, Peoples R China

3.South China Agr Univ, Coll Engn, Natl Ctr Int Collaborat Res Precis Agr Aviat Pest, Guangzhou 510642, Peoples R China

4.Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Peoples R China

5.Mansoura Univ, Fac Agr, Dept Agron, Mansoura 35516, Egypt

6.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Res Vegetables, Vegetable Res Inst, Guangzhou 510640, Peoples R China

关键词： Oryza sativa L; controlled-release fertilizer; irrigation management; yield; nitrogen use efficiency

期刊名称：AGRICULTURE-BASEL （ 影响因子：3.408； 五年影响因子：3.459 ）

ISSN：

年卷期： 2022 年 12 卷 1 期

页码：

收录情况： SCI

摘要： The efficient use of water and fertilizer is vital for optimizing plant growth and yield in rice production. To achieve sustainable rice production and resource management, the ways in which applied water and nitrogen affect the root and shoot morpho-physiology, as well as yield, must be understood. In this study, a pot experiment was conducted to investigate the effects of slow-release nitrogen fertilizer (sulfur-coated urea) application at three levels (light nitrogen (NL), medium nitrogen (NM), and heavy nitrogen (NH)) on the growth, yield, and nitrogen use efficiency (NUE) of rice grown under three water regimes (wetting and soil saturation (WSS), wetting and moderate drying (WMD) and wetting and severe drying (WSD)). The results revealed that differences in water regimes and fertilizer rates led to significant differences in the roots, shoots, yield, and NUE of rice. Increasing the N dosage by 5% enhanced the root and biomass production by 16% in comparison with that of the other groups. The NHxWSS treatment produced the greatest root length, weight, density, active absorption, and oxidation. However, the integration of WSS x NL generated the maximum value of nitrogen apparent recovery efficiency (63.1% to 67.6%) and the greatest value of nitrogen partial factor productivity (39.9 g g(-1) to 41.13 g g(-1)). Transmission electron microscopy (TEM) images showed that plants grown under high and medium nitrogen fertilizer rates with WSS had improved leaf mesophyll structure with normal starch grains, clear cell walls, and well-developed chloroplasts with tidy and well-arranged thylakoids. These results show that TEM images are useful for characterizing the nitrogen and water status of leaves in the sub-micrometer range and providing specific information regarding the leaf microstructure. The findings of this study suggest that the application of NHxWSS can produce improvements in growth traits and increase rice yield; however, the NLxWSS treatment led to greater NUE, and the authors recommend its usage in rice agriculture.