红壤旱地油菜―芝麻轮作下油菜控释氮肥施用效果及其后效

吕伟生, 王馨悦, 陈明, 邓雪云, 张晨, 李子婧, 罗军元, 刘小三, 肖国滨

The Effect and the Residual Effect of Special Controlled-Release Nitrogen Fertilizer for Rapeseed (Brassica napus L.) under Rapeseed-Sesame Rotation System in Red-Soil Dryland

Lü Weisheng, Wang Xinyue, Chen Ming, Deng Xueyun, Zhang Chen, Li Zijing, Luo Junyuan, Liu Xiaosan, Xiao Guobin

表3 控释氮肥对油菜成熟期生物量及氮素积累的影响

Table 3 Effects of controlled-release nitrogen fertilizer on the biomass and N accumulation of rapeseed at the maturity stage

处理 Treatment 生物量 Biomass (kg/hm2) 氮素积累N accumulation 氮肥 利用率 N use efficiency (%) 茎秆Stem 角壳Shell 籽粒Seed 地上部积累总量 Aboveground N accumulation (kg/hm2) 积累量 N accumulation (kg/hm2) 占比 Proportion (%) 积累量 N accumulation (kg/hm2) 占比 Proportion (%) 积累量 N accumulation (kg/hm2) 占比 Proportion (%) CK 3307b 8.1b 13.8 5.9b 10.1 44.6b 76.1 58.6b － CN 9019a 20.0a 15.4 12.8a 9.9 97.1a 74.7 129.9a 39.6a CRN 9195a 20.5a 15.6 13.1a 9.8 98.4a 74.6 132.1a 40.8a