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浙江大学学报(农业与生命科学版)  2022, Vol. 48 Issue (1): 45-56    DOI: 10.3785/j.issn.1008-9209.2021.03.083
资源利用与环境保护     
麦(油)-稻轮作下秸秆还田与氮肥运筹对土壤氮素供应及直播稻产量的影响
彭志芸1,2(),吕旭1,伍杂日曲1,舒川海1,谌洁1,向开宏1,杨志远1,马均1()
1.四川农业大学水稻研究所/作物生理生态及栽培四川省重点实验室,成都 611130
2.宜宾市农业科学院,四川 宜宾 644000
Effects of straw returning and nitrogen fertilizer management on soil nitrogen supply and yield of direct seeding rice under wheat (rape)-rice rotation
Zhiyun PENG1,2(),Xu Lü1,Riqu WUZA1,Chuanhai SHU1,Jie SHEN1,Kaihong XIANG1,Zhiyuan YANG1,Jun MA1()
1.Rice Research Institute, Sichuan Agricultural University/Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
2.Yibin Academy of Agricultural Sciences, Yibin 644000, Sichuan, China
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摘要:

为探明麦(油)-稻轮作模式下秸秆还田和氮肥运筹对土壤氮素供应和直播稻产量的影响,于2018年和2019年在四川农业大学崇州试验基地开展2年定位试验。试验采用两因素裂区设计,主区为麦(油)秸秆全量翻埋还田(M1)和秸秆不还田(对照,M0),副区在施氮量150 kg/hm2的基础上设氮肥前移(N1)、均衡施氮(N2)、氮肥后移(N3)3种氮肥运筹,以不施氮肥为对照(N0),测定土壤铵态氮、硝态氮、全氮含量以及稻株氮素积累量及产量。结果表明:2018年麦(油)-稻轮作模式下秸秆还田较不还田成熟期稻株氮素积累量提高7.13%(8.50%),产量增加0.94%(1.43%),2019年增至15.17%(17.12%)、6.60%(7.42%)。2018年拔节期,麦(油)茬田中直播稻氮素积累量整体呈N1>N2>N3趋势,齐穗期和成熟期稻株的氮素积累量及产量在秸秆不还田处理下表现为N3>N2>N1,秸秆还田后则是N2>N3>N1。相较秸秆不还田,秸秆还田后麦(油)茬直播稻成熟期田间0~10、>10~20 cm土层的氨态氮含量有增有减,硝态氮含量则整体降低了44.22%(30.99%)、8.05%(20.09%)。土壤全氮含量在直播稻各生育期变化较小,N1处理下各生育期土壤硝态氮、铵态氮和全氮含量均保持在较高水平。综上所述,连续的秸秆还田有利于提高土壤全氮含量,麦(油)-稻轮作模式下均是均衡施氮配合能有效促进稻株氮素吸收,显著提高水稻产量,以油-稻轮作模式下增产效果更佳。

关键词: 秸秆还田氮肥运筹麦(油)-稻轮作土壤氮素产量    
Abstract:

The positioning test was carried out in the Chongzhou Experimental Base of Sichuan Agricultural University in 2018—2019, aiming at exploring the effects of straw returning and nitrogen (N) fertilizer management on soil N supply and yield of direct seeding rice under the wheat (rape)-rice rotation. The two-factor split-zone design was adopted. The main area was wheat/rape straw being turned over to field (M1) and straw being not returned to field (control, M0). In the sub-area, on the basis of 150 kg/hm2 of N application, there were three kinds of N fertilizer operation, including N fertilizer moving forward (N1), balanced N application (N2) and N fertilizer moving backward (N3), with no N fertilizer application as a control (N0). Then, the contents of soil ammonium-N, nitrate-N and total N, N accumulation and yield of direct seeding rice were determined. The results showed that the N accumulation of rice plant increased by 7.13% (8.50%) and the yield increased by 0.94% (1.43%) in 2018, and which increased to 15.17% (17.12%) and 6.60% (7.42%) in 2019 under the wheat (rape)-rice rotation at the maturing stage compared with those without straw returning. At the jointing stage in 2018, N accumulation amounts of direct seeding rice in the wheat (rape) stubble field were N1>N2>N3 treatments as a whole. At the full heading stage and maturing stage, N accumulation amounts and yields of rice plants were N3>N2>N1 treatments under the no straw returning, as well as N2>N3>N1 treatments under the straw returning. Compared with the no straw returning, the ammonium-N contents in 0-10 and >10-20 cm soil layers at the rice maturing stage under the wheat (rape)-rice rotation increased or decreased after straw returning. While the nitrate-N contents decreased by 44.22% (30.99%) and 8.05% (20.09%) overall. Soil total N contents had little change in each growth stage of direct seeding rice, and the contents of nitrate-N, ammonium-N and total N in the soils under the N1 treatment remained at a high level in each growth stage. In conclusion, continuous straw returning is beneficial to increase soil total N content; under the wheat (rape)-rice rotation, the balanced N application could effectively promote the N uptake by rice plants and significantly increase the rice yield, and the effect of increasing yield is better under the rape-rice rotation.

Key words: straw returning    nitrogen fertilizer management    wheat (rape)-rice rotation    soil nitrogen    yield
收稿日期: 2021-03-08 出版日期: 2022-03-04
CLC:  S 511.3  
基金资助: 国家重点研发计划(2017YFD0301706);四川省育种攻关专项(2016NYZ0051);四川省教育厅重点项目(18ZA0390)
通讯作者: 马均     E-mail: 1403775459@qq.com;majunp2002@163.com
作者简介: 彭志芸(https://orcid.org/0000-0001-8248-873X),E-mail:1403775459@qq.com
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引用本文:

彭志芸,吕旭,伍杂日曲,舒川海,谌洁,向开宏,杨志远,马均. 麦(油)-稻轮作下秸秆还田与氮肥运筹对土壤氮素供应及直播稻产量的影响[J]. 浙江大学学报(农业与生命科学版), 2022, 48(1): 45-56.

Zhiyun PENG,Xu Lü,Riqu WUZA,Chuanhai SHU,Jie SHEN,Kaihong XIANG,Zhiyuan YANG,Jun MA. Effects of straw returning and nitrogen fertilizer management on soil nitrogen supply and yield of direct seeding rice under wheat (rape)-rice rotation. Journal of Zhejiang University (Agriculture and Life Sciences), 2022, 48(1): 45-56.

链接本文:

https://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2021.03.083        https://www.zjujournals.com/agr/CN/Y2022/V48/I1/45

年份

Year

试验田

Test field

有机质

Organic matter/(g/kg)

全氮

Total N/(g/kg)

有效磷

Available P/(mg/kg)

速效钾

Available K/(mg/kg)

2018麦茬田 Wheat stubble field31.361.6516.74187.43
油茬田 Rape stubble field39.491.8317.47226.76
2019麦茬田 Wheat stubble field32.431.7519.11168.59
油茬田 Rape stubble field39.551.8720.55207.22
表1  试验田耕层土壤(0~20 cm)肥力状况
图1  2018—2019年试验区水稻生育期平均气温和降雨量

氮肥运筹模式

Nitrogen fertilizer management model

2叶期

2-leaf stage

5叶期

5-leaf stage

倒4叶期

Inverted 4-leaf stage

倒2叶期

Inverted 2-leaf stage

N1氮肥前移 Nitrogen fertilizer moving forward150000
N2均衡施氮 Balanced nitrogen application45453030
N3氮肥后移 Nitrogen fertilizer moving backward30304545
表2  不同氮肥运筹模式下水稻各生育时期的施氮量 (kg/hm2)

处理

Treatment

0~10 cm土层铵态氮含量

NH4-N content in the 0-10 cm soil layer

>10~20 cm土层铵态氮含量

NH4-N content in the >10-20 cm soil layer

拔节期 JS齐穗期 FHS成熟期 MS拔节期 JS齐穗期 FHS成熟期 MS
Pw-M0N06.58b4.82c3.98b5.70a2.41b2.19ab
N19.67a6.05b4.91a5.83a4.02a1.52b
N28.61a5.28bc2.80c4.32b2.52ab2.95a
N39.67a7.48a3.69b6.23a3.42ab3.15a
均值 Average8.635.913.855.523.092.45
Pw-M1N06.11b6.15a2.29b6.13a4.28a3.81a
N18.73a6.09a3.78a3.29c2.69b3.07ab
N27.63ab5.35a1.63c3.67c3.38ab2.65ab
N39.22a5.42a2.74b4.89b4.43a2.06b
均值 Average7.925.752.614.493.702.90

F

F value

M0.370.0454 914.99**1.841.2515.61
N6.97**2.3634.70**10.04**0.980.90
M×N0.074.21*1.144.93*2.844.59*
Po-M0N08.79a5.50a4.15a5.82b4.55b2.96ab
N17.87a5.93a3.18b8.11a6.55a2.90ab
N26.82a6.02a3.48ab6.08b4.69b2.54b
N36.92a6.12a3.13b5.44b4.26b3.28a
均值 Average7.605.893.496.365.012.92
Po-M1N07.20b8.03a5.49a6.50a4.40b3.08ab
N19.92a6.15b4.01b3.44c5.98a2.48b
N29.81ab6.72ab2.86c4.82b6.47a3.15a
N38.09ab4.78c3.01c7.64a3.29c2.88ab
均值 Average8.756.423.845.605.042.90

F

F value

M17.47428.88**0.3214.130.0080.02
N0.662.5711.89**1.2714.41**1.02
M×N1.905.32*3.63*12.54**4.31*1.97
表3  麦(油)-稻轮作下秸秆还田与氮肥运筹对稻田各土层铵态氮含量的影响(2018年) (mg/kg)

处理

Treatment

0~10 cm土层硝态氮含量

NO3-N content in the 0-10 cm soil layer

>10~20 cm土层硝态氮含量

NO3-N content in the >10-20 cm soil layer

拔节期 JS齐穗期 FHS成熟期 MS拔节期 JS齐穗期 FHS成熟期 MS
Pw-M0N00.90b3.72a3.20bc1.24b1.93b1.68a
N12.89a2.48b3.51b1.82a1.31c1.54a
N22.44a4.23a6.57a0.76c1.33c1.90a
N31.31b3.83a2.28c0.67c3.61a1.85a
均值 Average1.893.563.891.122.041.74
Pw-M1N03.40a1.60c2.52ab1.03a2.53a1.89a
N11.95b2.31b2.83a0.45b2.04a2.04a
N21.23bc3.77a1.85ab0.37b2.08a1.15a
N31.15c2.60b1.47b0.79ab1.98a1.33a
均值 Average1.932.572.170.662.161.60

F

F value

M0.0132.99*28 419.33**37.74*0.281.19
N5.98**18.19**10.00**6.68**11.83**0.27
M×N16.53**6.97**10.72**8.15**14.38**1.32
Po-M0N02.60a2.27b2.96b0.71a2.23a2.22a
N13.41a2.07b3.62b0.84a1.50b2.45a
N22.61a2.94a3.45b0.70a2.67a2.27a
N33.48a3.10a6.48a0.74a2.28a1.99a
均值 Average3.032.604.130.742.172.24
Po-M1N02.04a1.84c2.13b1.09b2.78a1.34b
N11.27a3.57a5.28a1.66a1.38b2.98a
N21.32a3.48ab2.50b0.42c2.07ab1.74b
N31.65a2.71b1.50b1.97a1.38b1.07b
均值 Average1.572.902.851.291.901.79

F

F value

M51.62*2.454 549.93**109.27**1.796.84
N0.675.28*9.77**19.36**6.70**5.31*
M×N1.314.6223.68**15.49**2.78**3.38
表4  麦(油)-稻轮作下秸秆还田与氮肥运筹对稻田各土层硝态氮含量的影响(2018年) (mg/kg)

处理

Treatment

0~10 cm土层全氮含量

Total nitrogen content in the 0-10 cm soil layer

>10~20 cm土层全氮含量

Total nitrogen content in the >10-20 cm soil layer

拔节期 JS齐穗期 FHS成熟期 MS拔节期 JS齐穗期 FHS成熟期 MS
Pw-M0N01.67b1.71ab1.55b1.42ab1.48b1.52ab
N11.91a1.54b1.42c1.49ab1.68a1.63a
N21.85a1.77a1.88a1.61a1.53b1.50b
N31.84a1.81a1.84a1.37b1.47b1.39c
均值 Average1.821.711.671.471.541.51
Pw-M1N01.41c1.45b1.60b1.29b1.40a1.37b
N11.79ab1.83a1.87a1.29b1.30a1.52a
N21.71b1.67ab1.69b1.58a1.27a1.41ab
N31.90a1.67ab1.70ab1.33b1.41a1.21c
均值 Average1.701.651.711.371.351.38

F

F value

M212.84**0.747.154.2175.28*32.88*
N31.84**1.015.74*4.69*0.9211.46**
M×N6.02**2.8411.98**0.534.01*0.36
Po-M0N01.82b1.86a1.63b1.48b1.51a1.47b
N11.97a1.63b1.56b1.49b1.63a1.70a
N21.99a1.94a1.84a1.54ab1.45a1.50b
N31.86ab1.94a1.79a1.64a1.52a1.28c
均值 Average1.911.841.701.541.531.49
Po-M1N01.58b1.78a1.57b1.46c1.25c1.19b
N11.95a1.82a1.83a1.71a1.79a1.59a
N21.83a1.74a1.77a1.58b1.52b1.49a
N31.88a1.67a1.83a1.65ab1.20c1.25b
均值 Average1.811.751.751.601.441.38

F

F value

M5.079.420.790.621.2612.96
N7.58**0.674.20*4.87*8.40**35.84**
M×N2.112.732.692.514.56*4.75*
表5  麦(油)-稻轮作下秸秆还田与氮肥运筹对稻田各土层全氮含量的影响(2018年) (g/kg)

处理

Treatment

0~10 cm土层全氮含量

Total nitrogen content in the 0-10 cm soil layer

>10~20 cm土层全氮含量

Total nitrogen content in the >10-20 cm soil layer

播前

Before sowing

拔节期

JS

齐穗期

FHS

成熟期

MS

播前

Before sowing

拔节期

JS

齐穗期

FHS

成熟期

MS

Pw-M0N01.63c1.77a1.72b1.72b1.35a1.08a1.14a1.32a
N11.76b1.82a1.80a1.75ab1.36a1.34a1.12a1.41a
N21.91a1.87a1.74b1.86a1.24b1.19a1.36a1.49a
N31.60c1.77a1.70b1.83a1.41a0.99a1.32a1.49a
均值 Average1.721.811.741.791.341.151.231.42
Pw-M1N01.72ab1.51c1.51c1.62b1.00c1.03b0.88b0.98b
N11.84a2.05a1.76a1.89a1.79a1.56a1.17ab1.40a
N21.85a1.79b1.69b1.80a1.39b1.42a1.08ab1.01b
N31.68b1.76b1.77a1.82a1.31b1.41a1.29a1.15ab
均值 Average1.771.781.681.781.371.351.101.13

F

F value

M2.7117.230.570.11123.32**19 683.97**60.54*19.19*
N7.98**11.17**22.12**4.46*23.11**3.002.243.30
M×N0.897.34**14.65**1.9823.12**1.001.012.85
Po-M0N01.67b1.94ab1.84a1.82a1.57a1.32b1.77a1.51b
N11.81b2.03a1.83a1.88a1.42b1.67a1.58b1.75a
N22.03a1.90b1.84a1.91a1.65a1.62a1.53bc1.56b
N31.72b1.94ab1.76b1.88a1.62a1.38b1.44c1.50b
均值 Average1.811.951.821.871.561.501.581.58
Po-M1N01.97ab1.86b1.82b1.72c1.50bc1.32c1.21c1.34c
N12.12a1.99a1.84b1.97ab1.56ab1.73a1.39b1.64a
N21.74c1.87b1.85ab1.86b1.67a1.58b1.25bc1.54b
N31.90b1.94ab1.92a1.98a1.41c1.40c1.59a1.60ab
均值 Average1.931.921.861.881.531.511.361.53

F

F value

M253.08**2.151.461.0312.070.15163.22**4.43
N2.114.02*0.156.55**5.74*34.31**1.9031.10**
M×N8.31**0.354.33*2.995.77*0.4713.14**9.06**
表6  麦(油)-稻轮作下秸秆还田与氮肥运筹对稻田各土层全氮含量的影响(2019年) (g/kg)
图2  麦(油)-稻轮作下秸秆还田与氮肥运筹对直播稻氮素积累的影响短栅上不同小写字母表示同一时期相同主处理下不同副处理间在P<0.05水平差异有统计学意义。
图3  麦(油)-稻轮作下秸秆还田与氮肥管理对直播稻产量的影响短栅上不同小写字母表示同一轮作模式及主处理下不同副处理间在P<0.05水平差异有统计学意义。

土层

Soil layer/cm

指标

Index

生育期

Growth stage

麦-稻轮作 Wheat-rice rotation油-稻轮作 Rape-rice rotation

稻株氮素积累总量

Total N accumulation in plants

产量

Yield

稻株氮素积累总量

Total N accumulation in plants

产量

Yield

0~10

铵态氮含量

NH4-N content

拔节期 JS0.47*0.46*0.040.04
齐穗期 FHS0.150.02-0.24-0.32
成熟期 MS-0.33-0.06-0.62**-0.63**

硝态氮含量

NO3-N content

拔节期 JS-0.37-0.34-0.20-0.13
齐穗期 FHS0.47*0.330.62**0.59**
成熟期 MS-0.13-0.030.160.20

无机氮总含量

Total inorganic

nitrogen content

拔节期 JS0.230.23-0.08-0.04
齐穗期 FHS0.44*0.230.140.06
成熟期 MS-0.26-0.05-0.19-0.17
>10~20

铵态氮含量

NH4-N content

拔节期 JS-0.37-0.28-0.15-0.09
齐穗期 FHS0.07-0.09-0.030.00
成熟期 MS-0.05-0.190.05-0.02

硝态氮含量

NO3-N content

拔节期 JS-0.55**-0.350.040.02
齐穗期 FHS0.13-0.01-0.13-0.25
成熟期 MS-0.22-0.13-0.18-0.07

无机氮总含量

Total inorganic

nitrogen content

拔节期 JS-0.47*-0.34-0.13-0.08
齐穗期 FHS0.13-0.08-0.09-0.12
成熟期 MS-0.14-0.21-0.14-0.07
表7  麦(油)-稻轮作下0~20 cm土层无机氮含量与直播稻氮素积累总量及产量的相关性(2018年)
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