期刊
JOURNAL OF INTEGRATIVE AGRICULTURE
卷 18, 期 12, 页码 2716-2731出版社
ELSEVIER SCI LTD
DOI: 10.1016/S2095-3119(19)62836-4
关键词
rice; integrative cultivation management; yield; grain quality; nitrogen use efficiency
资金
- National Basic Research Program of China [2015CB150404]
- National Key Research and Development Program of China [2016YFD0300206-4, 2017YFD0301206, 2018YFD0300801]
- National Natural Science Foundation of China [31201155, 31871559]
- Natural Science Foundation of the Jiangsu Higher Education Department, China [15KJA210005]
- Young Elite Scientists Sponsorship Program by China Association for Science and Technology [2016QNRC001]
- Six Talent Peaks Project of Jiangsu Province, China [SWYY-151]
- Priority Academic Program Development of Jiangsu Higher Education Institutions, China
- Top Talent Support Plan of Yangzhou University, China [2015-01]
A major challenge in rice (Oryza sativa L.) production is to cope with increasing grain yield and fertilizer use efficiency without compromising grain quality. This study was designed to determine if optimizing integrative cultivation management in rice could improve grain quality while increase yield and nitrogen use efficiency (NUE). An indica-japonica hybrid rice cultivar and a japonica rice cultivar were grown in the field, with five cultivation managements including no N application (0 N), local farmer's practice (LFP), and three optimizing integrative cultivation managements, reducing N rate and increasing plant density (ND), ND+alternate wetting and moderate soil drying irrigation (NDW), and NDW+applying rapeseed cake fertilizer (NDWR). The results showed that the optimizing integrative cultivation managements could not only increase grain yield, but also enhance NUE compared to LFP. Compared to LFP, NDWR significantly increased brown, milled, head milled rice rate, ratio of the kernel length to breadth and breakdown value of starch, whereas decreased amylose content, gel consistency, prolamin content, setback value, percentage of chalky kernels, and chalkiness. The three optimizing integrative cultivation managements increased contents of total proteins, albumin and glutelin, activities of the key enzymes involved in the sucrose-starch conversion in grains, root oxidation activity, and malic and succinic acid concentrations in root exudates during the grain-filling period. The results suggested that optimizing integrative cultivation managements could improve grain quality meanwhile increase grain yield and NUE by enhancing physiological activities of rice plants.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据