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5 油菜季施控释氮肥的作物利用率以及残留氮在芝麻季的吸收利用

Table 5 Effects of controlled-release nitrogen fertilizer on N use efficiency and residual N efficiency in sesame season

芝麻季处理 Treatment in sesame 油菜季处理 Treatment in rapeseed 芝麻氮素吸收量 N accumulation of sesame (kg/hm2) 芝麻氮肥利用率 N use efficiency of sesame (%) 油菜残留氮利用率 Residual N use efficiency of rapeseed (%) 油菜累积氮利用率 Accumulative N use efficiency of rapeseed (%) N0 CK 56.5d － － － CN 66.0c － － － CRN 71.7c － － － N1 CK 92.8b 34.3b － － CN 107.2a 39.2a 5.2b 44.8b CRN 114.7a 40.9a 8.4a 49.3a