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6 油菜季施控释氮肥的对后作氮肥利用的影响

Table 6 The residual effect of controlled-release nitrogen fertilizer for rapeseed

油菜季处理 Treatment in rapeseed 芝麻施氮增产量 Increasing yield for N application of sesame (kg/hm2) 芝麻氮肥农学效率 N agronomic efficiency of sesame (%) 目标产量施氮量 N application for target yield (kg/hm2) 可替代施氮量 The substitute of N application (kg/hm2) CK 489 4.66 105.0 － CN 542 5.16 94.8 10.2 CRN 622 5.92 82.6 22.4