内蒙古灌溉马铃薯氮肥减施依据及措施

陈杨,秦永林,于静,贾立国,樊明寿

Basis and Measures for Reducing Nitrogen Fertilizer on Irrigated Potato in Inner Mongolia

Yang Chen,Yonglin Qin,Jing Yu,Liguo Jia,Mingshou Fan

表2 马铃薯氮肥推荐用量

Table 2 Recommended amount of nitrogen fertilizer of potato

目标产量(t/hm2) Aimed yield 推荐用量(N kg/hm2) Recommended dosage 基肥(N kg/hm2) Base fertilizer 追肥Topdressing (N kg/hm2) 块茎形成期Tuber formation stage 块茎膨大期Tuber enlargement stage 37.5 250 75 100 75 45.0 300 90 120 90 52.5 350 105 140 105 60.0 400 120 160 120