中国油料作物学报Issue(4)：489-497,9.DOI:10.7505/j.issn.1007-9084.2015.04.009
胡麻/大豆间作体系下施氮对胡麻干物质积累和产量的影响
Effects of applied nitrogen on dry matter accumulation and oil flax yield in flax/soybean intercropping system
摘要
Abstract
To optimized nitrogen management on oil flax/soybean intercropping system,field experiment was carried out to investigate N effect on dry matter accumulation and yield of 2 crops. 3 different N rates(0,75 and 150kg/hm2 )were applied on monocropping and intercropping respectively. Results showed that fitted logistic equa-tions of oil flax dry matter accumulation were significant at P﹤0 . 01 . The maximum rate of dry matter accumulation of monocropping oil flax occurred at flowering stage. It moved to fruiting stage under 150kg/hm2 N on intercropping oil flax. Under monocropping,total dry matter accumulation and grain dry matter accumulation were increased with N application,and reached the highest under 150kg/hm2 treatment(T3). Under intercropping in contrast,75kg/hm2 N application(T5)led to the top dry matter accumulation. Compared to monocropping,the maximum inter-cropping oil flax yield(as 3 204. 80kg/hm2)was obtained due to higher translocation of dry matter(before anthe-sis),higher dry matter accumulation( after anthesis),and higher contribution rate of dry matter assimilation to grains. Additionally,mutually beneficial effect was greater than competition effect in oil flax/soybean intercropping system. In conclusion,half N application(75kg/hm2 N)under flax/soybean intercropping obtained high yield of 3 204. 80kg/hm2 flax seeds.关键词
胡麻/大豆/间作/施氮量/干物质积累/产量Key words
Oil flax/Soybean/Intercropping/Nitrogen application/Dry matter accumulation/Yield分类
农业科技引用本文复制引用
..胡麻/大豆间作体系下施氮对胡麻干物质积累和产量的影响[J].中国油料作物学报,2015,(4):489-497,9.基金项目
国家现代农业产业技术体系建设专项 （）
