作物学报Issue(3)：458-467,10.DOI:10.3724/SP.J.1006.2015.00458
有机栽培对杂交粳稻产量和品质的影响
Effects of Organic Farming on Yield and Quality of HybridJaponica Rice
摘要
Abstract
Two types ofjaponica rice, including three varieties of hybridjaponica rice (Changyou 2, Changyou 5, Yongyou 8) and three varieties of conventionaljaponica rice (Huaidao 5, Nanjing 46, Nanjing 5055), were grown under organic farming and con-ventional farming. The possibility achieving stable production and high quality under organic farming was explored. The results showed that average yield of hybridjaponica rice and conventionaljaponica rice was 8.11 and 6.29 t ha–1 respectively, under or-ganic farming. While, total stem and tiller number in the population of conventional rice varieties was more than that of hybrid rice under both farming treatments, the decline of tillers of hybridjaponica rice was more stable and as a result, the percentage of earbearing tillers of hybridjaponica rice under organic farming increased by 6.50% compared with conventional rice. In each growth period, rice leaf area index and photosynthesis potential showed the trend of conventional farming > organic farming, and also, compared with the conventional cultivation, smaller drops in those indexes were found under organic farming for hybrid japonica rice than for conventionaljaponica rice. Furthermore, the average population growth rate of hybridjaponica rice was 1.29% higher and the accumulation of dry matter ratio was 8.81% higher than those of conventionaljaponica rice. Compared with conventional cultivation, organic farming slightly declined the processing quality of all rice varieties, but improved the appearance quality and eating quality through reducing the chalk white degree, increasing gel consistency and lowering amylose content. Whereas, the impact of farming methods was not significant on protein content. In sum, with significantly increasing yield and excellent quality traits, hybridjaponica rice displays obvious advantages under organic farming, therefore has a unique applica-tion value in the development of organic rice industry.关键词
有机栽培/杂交粳稻/常规粳稻/产量/品质Key words
Organic farming/Hybridjaponica rice/Conventionaljaponica rice/Yield/Quality引用本文复制引用
黄丽芬,张蓉,余俊,姜玲玲,苏宏鼎,庄恒扬..有机栽培对杂交粳稻产量和品质的影响[J].作物学报,2015,(3):458-467,10.基金项目
本研究由国家自然科学基金项目(31201154),江苏省高校优势学科建设工程项目和江苏省作物栽培生理重点实验室项目(K12008)资助。 （31201154）
