摘要
在基肥相同的情况下,研究了追肥中不同比例的有机肥对水稻产量形成的影响。结果表明,随着有机肥比例的提高,成穗数、每穗总颖花数下降,而结实率明显提高;当有机肥∶无机肥为4∶6时,有利于抽穗以后的干物质生产和积累,具有较高的生物产量,每穗实粒数增加,千粒重提高,产量结构协调,具有增产作用;同时氮肥的施用效益较高。
Based on the same application of basal manure, the effects of the ratio of organic to inorganic fertilizer used as top-dressing on rice yield development were investigated. The results were as follows. When more organic fertilizer was used, the number of ears and glumes decreased, but the burliness grain percentage increased significantly. Under our experimental conditions, when the ratio of organic to inorganic fertilizer was 4： 6, dry matter production and accumulation after heading increased up to the highest biomass. Meanwhile,, the grain number per ear, 1000-kemel weight and yield were enhanced and nitrogen usage efficiency also reached its peak.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2006年第2期252-256,共5页
Journal of Anhui Agricultural University
基金
国家科技攻关项目(2002BA516A14)
淮安市科技发展计划项目(SN0519)共同资助
关键词
水稻
有机肥
追肥
产量形成
施用效益
rice
organic fertilizer
top-dressing
yield development
nitrogen usage efficiency
