Effect of fertilizer combined with nitrogen synergist on yield and nitrogen utilization of rice

doi:10.16178/j.issn.0528-9017.20220526

Abstract

Abstract:

In order to study the effects of nitrogen fertilizer synergist and chemical fertilizer on crop yield and nitrogen use efficiency, field experiments were used to analyze rice yield, plant nitrogen content and nitrogen use efficiency under different fertilization treatments. The results showed that the combined application of chemical fertilizer and nitrogen fertilizer synergist (RF1+NS, RF2+NS) could significantly increase rice yield by 12.2% and 8.8%, respectively, under the same fertilizer application rate (RF1, RF2). Compared with RF1 and RF2, the apparent recoveries of nitrogen fertilizer in RF1+NS and RF2+NS treatments were significantly increased by 9.26 percentage points and 6.20 percentage points, respectively. In conclusion, the combined application of chemical fertilizer and nitrogen fertilizer synergist can help to reduce the amount of nitrogen fertilizer application and improve the yield and nitrogen use efficiency of rice.

Key words: rice, nitrogenous fertilizer, nitrogen synergist, nitrogen use efficiency

CLC Number:

S511.5

TAO Juanhua, WEN Miao, SHI Qiwei, ZHANG Huize, JIN Liang, MA Jinchuan. Effect of fertilizer combined with nitrogen synergist on yield and nitrogen utilization of rice[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(1): 31-36.

Figures/Tables 5

References 25

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处理	施肥量/(kg·hm^-2)	施肥方式
CK	N 0 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2	P、K全部基施
FP	N 189 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2	P、K全部基施,氮肥1次基肥,2次追肥,基追比为1∶1.5
RF1	N 159 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2	P、K全部基施,氮肥1次基肥,1次追肥,基追比为1∶1
RF1+NS	N 159 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2+氮肥增效剂	P、K全部基施,氮肥1次基肥,1次追肥,基追比为1∶1
RF2	N 129 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2	P、K全部基施,氮肥1次基肥,2次追肥,基追比为1∶1
RF2+NS	N 129 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2+氮肥增效剂	P、K全部基施,氮肥1次基肥,2次追肥,基追比为1∶1

处理	施肥量/(kg·hm^-2)	施肥方式
CK	N 0 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2	P、K全部基施
FP	N 189 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2	P、K全部基施,氮肥1次基肥,2次追肥,基追比为1∶1.5
RF1	N 159 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2	P、K全部基施,氮肥1次基肥,1次追肥,基追比为1∶1
RF1+NS	N 159 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2+氮肥增效剂	P、K全部基施,氮肥1次基肥,1次追肥,基追比为1∶1
RF2	N 129 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2	P、K全部基施,氮肥1次基肥,2次追肥,基追比为1∶1
RF2+NS	N 129 kg·hm^-2+P₂O₅ 60 kg·hm^-2+K₂O 75 kg·hm^-2+氮肥增效剂	P、K全部基施,氮肥1次基肥,2次追肥,基追比为1∶1

处理	养分投入			养分总输出量			盈余量
处理	N	P₂O₅	K₂O	N	P₂O₅	K₂O	N	P₂O₅	K₂O
CK	0	60	75	45.80±0.14 d	79.60±2.93 d	71.54±0.14 f	-45.80±0.14 f	-19.60±2.93 a	3.46±0.45 a
FP	189	60	75	87.92±1.60 ab	129.99±7.52 a	122.36±5.79 b	101.08±1.60 a	-69.99±7.52 d	-47.36±5.79 c
RF1	159	60	75	77.70±2.60 c	102.69±3.00 c	107.66±6.49 c	81.30±2.60 b	-42.69±3.00 b	-32.66±6.49 b
RF1+NS	159	60	75	92.42±0.72 a	119.68±6.49 ab	145.16±3.05 a	66.58±0.72 c	-59.68±6.49 cd	-70.16±3.05 d
RF2	129	60	75	76.49±2.14 c	114.60±4.94 bc	113.18±2.48 bc	52.51±2.41 d	-54.60±4.94 cd	-38.18±2.48 bc
RF2+NS	129	60	75	84.49±0.83 b	111.36±3.08 bc	106.00±4.07 c	44.51±0.83 e	-51.36±3.08 bc	-31.00±4.07 b

处理	养分投入			养分总输出量			盈余量
处理	N	P₂O₅	K₂O	N	P₂O₅	K₂O	N	P₂O₅	K₂O
CK	0	60	75	45.80±0.14 d	79.60±2.93 d	71.54±0.14 f	-45.80±0.14 f	-19.60±2.93 a	3.46±0.45 a
FP	189	60	75	87.92±1.60 ab	129.99±7.52 a	122.36±5.79 b	101.08±1.60 a	-69.99±7.52 d	-47.36±5.79 c
RF1	159	60	75	77.70±2.60 c	102.69±3.00 c	107.66±6.49 c	81.30±2.60 b	-42.69±3.00 b	-32.66±6.49 b
RF1+NS	159	60	75	92.42±0.72 a	119.68±6.49 ab	145.16±3.05 a	66.58±0.72 c	-59.68±6.49 cd	-70.16±3.05 d
RF2	129	60	75	76.49±2.14 c	114.60±4.94 bc	113.18±2.48 bc	52.51±2.41 d	-54.60±4.94 cd	-38.18±2.48 bc
RF2+NS	129	60	75	84.49±0.83 b	111.36±3.08 bc	106.00±4.07 c	44.51±0.83 e	-51.36±3.08 bc	-31.00±4.07 b

处理	氮肥表观回收率/%	氮收获指数
FP	23.20±0.84 bc	71.27±1.14 a
RF1	21.15±1.63 c	70.19±0.42 a
RF1+NS	30.41±0.45 a	71.54±0.11 a
RF2	25.13±1.66 b	71.30±1.68 a
RF2+SN	31.33±0.64 a	72.30±0.45 a