稻麦复种模式下氮肥与稻秸互作对小麦产量和N<sub>2</sub>O排放影响及推荐施肥研究

稻麦复种模式下氮肥与稻秸互作对小麦产量和N₂O排放影响及推荐施肥研究

陆汝华, 王文轩, 曹强, 田永超, 朱艳, 曹卫星, 刘小军

Research on the effects of nitrogen fertilizer and rice straw return on wheat yield and N₂O emission and recommended fertilization under rice-wheat rotation pattern

LU Ru-Hua, WANG Wen-Xuan, CAO Qiang, TIAN Yong-Chao, ZHU Yan, CAO Wei-Xing, LIU Xiao-Jun

表2 不同秸秆还田量情景的N₂O累积排放和小麦产量模拟模型

Table 2 Simulation model of cumulative N₂O emission and wheat yield under different scenarios of straw returning to the field

处理 Treatment	N₂O累积排放量Cumulative N₂O emissions (kg hm^-2)		产量 Yield (t hm^-2)
处理 Treatment	LINEAR	EXPONENT	产量 Yield (t hm^-2)
S0	y = 0.0077x+1.0226	y = 1.1281e^0.004^x	y = -0.1111x²+47.077x+1506.0
S2.25	y = 0.0078x+1.1241	y = 1.2180e^0.0038^x	y = -0.1117x²+46.961x+1526.2
S4.50	y = 0.0071x+1.2914	y = 1.3763e^0.0033^x	y = -0.1197x²+49.842x+1489.9
S6.75	y = 0.0069x+1.2907	y = 1.3727e^0.0033^x	y = -0.1205x²+50.221x+1491.4