典型黑土春玉米化学肥料养分利用效率变化研究

仇少君,李宁,何萍,魏丹,金梁,赵士诚,徐新朋,周卫

Nutrients Use Efficiency Change of Chemical Fertilizers for Spring Maize in a Typical Black Soil

Ning LI,Ping HE,Wei ZHOU,Dan WEI,Liang JIN,ShiCheng ZHAO,XinPeng XU,ShaoJun QIU

表2 2013—2016年不同处理地上部氮磷钾养分吸收量

Table 2 N, P, K uptake by aboveground under different treatments from 2013 to 2016

处理 Treatment	氮吸收量N uptake (kg N·hm^-2)					磷吸收量P uptake (kg P·hm^-2)					钾吸收量K uptake (kg K·hm^-2)
处理 Treatment	2013	2014	2015	2016	平均 Average	2013	2014	2015	2016	平均 Average	2013	2014	2015	2016	平均 Average
CK	150.0a	62.7c	65.4c	59.9b	84.5c	35.6a	20.8b	28.7c	14.1c	24.8c	144.9a	71.7c	78.6d	55.5c	87.7c
PK	150.7a	66.1c	79.0c	64.7b	91.4c	35.1a	24.7b	33.8bc	16.4bc	27.5bc	141.8a	82.0c	97.4cd	70.5bc	97.9c
NK	143.4a	135.0b	164.3b	159.7a	148.7b	33.6a	31.8a	33.2bc	19.4bc	29.5b	141.9a	115.5b	114.5bc	85.9c	114.5b
NP	156.9a	149.6ab	185.2a	159.3a	162.9a	33.3a	34.1a	37.5ab	20.0b	31.2ab	152.3a	120.1ab	136.2ab	122.4a	132.8ab
NPK	151.4a	159.3a	193.9a	178.4a	169.3a	33.0a	35.5a	42.4a	26.4a	34.3a	150.1a	128.9a	143.4a	131.0a	138.3a