中国水稻科学 ›› 2020, Vol. 34 ›› Issue (1): 69-79.DOI: 10.16819/j.1001-7216.2020.9045
李思平, 曾路生*(), 吴立鹏, 张玉晓, 解军蕊, 丁效东*()
收稿日期:
2019-04-12
修回日期:
2019-11-04
出版日期:
2020-01-10
发布日期:
2020-01-10
通讯作者:
曾路生,丁效东
基金资助:
Siping LI, Lusheng ZENG*(), Lipeng WU, Yuxiao ZHANG, Junrui XIE, Xiaodong DING*()
Received:
2019-04-12
Revised:
2019-11-04
Online:
2020-01-10
Published:
2020-01-10
Contact:
Lusheng ZENG, Xiaodong DING
摘要:
【目的】为解决水稻土壤保肥能力较弱,水稻产量较低,氮肥利用效率不高等问题,【方法】于山东省济宁市任城区水稻田设置氮肥水平与栽植密度双因素大田试验,设4个施氮量水平,即无氮(N1,0 kg/hm2)、低氮(N2,216 kg/hm2)、中氮(N3,288 kg/hm2)和高氮(N4,360 kg/hm2);栽植密度设3个梯度,即低密度(24万穴/hm2)、中密度(27万穴/hm2)和高密度(30万穴/hm2)。以探究不同氮肥水平和栽植密度下水稻成熟期土壤养分含量及氮肥利用效率的变化。【结果】随着土层加深,氮、磷、钾、有机质含量均明显下降。其中D3N4处理碱解氮含量下降了60.8%,D3N3处理速效磷含量降低了72.7%。随着施氮量增加,土壤pH值和有机质含量有所下降,速效钾含量升高,肥料偏生产力和氮肥农学利用效率降低,产量先升高后降低;随着栽植密度增加,土壤pH值与速效磷含量有所下降,表层土壤碱解氮含量略有升高,有机质含量与产量及肥料偏生产力均先升高后降低,氮肥农学利用效率降低。【结论】当栽植密度为27万穴/hm2时,氮肥用量288 kg/hm2,水稻产量最高,为14 615.3 kg/hm2;相同密度下氮肥按照216 kg/hm2施用,水稻产量、氮肥农学效率和肥料偏生产力均较高。研究结果可在实际生产中参考应用。
中图分类号:
李思平, 曾路生, 吴立鹏, 张玉晓, 解军蕊, 丁效东. 氮肥水平与栽植密度对植稻土壤养分含量变化与氮肥利用效率的影响[J]. 中国水稻科学, 2020, 34(1): 69-79.
Siping LI, Lusheng ZENG, Lipeng WU, Yuxiao ZHANG, Junrui XIE, Xiaodong DING. Effects of Nitrogen Fertilizer Level and Planting Density on Changes in Soil Nutrient contents and Nitrogen Use Efficiency in Rice[J]. Chinese Journal OF Rice Science, 2020, 34(1): 69-79.
图1 山东济宁稻区水稻生育期日平均气温与日平均降水量变化趋势图中数据来自中国气象数据网地面气象资料。
Fig. 1. Trends of daily average temperature and daily average precipitation during rice growth period in Jining rice region of Shandong Province. The data in the figure are from China Meteorological Data Network.
处理 Treatment | 土层深度 Soil layer | 均值 Average value | 变异系数 Coefficient of variation | |
---|---|---|---|---|
0–20 cm | 20–40 cm | |||
D1N1 | 7.72±0.06 b | 7.87±0.02 c | 7.80 | 0.014 |
D1N2 | 7.69±0.01 bc | 7.75±0.01 e | 7.72 | 0.005 |
D1N3 | 7.87±0.06 a | 7.99±0.09 ab | 7.93 | 0.011 |
D1N4 | 7.91±0.05 a | 8.03±0.02 a | 7.97 | 0.011 |
D2N1 | 7.69±0.01 bc | 7.98±0.02 ab | 7.84 | 0.026 |
D2N2 | 7.65±0.04 bcd | 7.80±0.02 de | 7.73 | 0.014 |
D2N3 | 7.63±0.05 cd | 7.74±0.06 e | 7.69 | 0.010 |
D2N4 | 7.59±0.01 de | 7.66±0.07 f | 7.63 | 0.006 |
D3N1 | 7.69±0.03 bc | 7.94±0.02 b | 7.82 | 0.023 |
D3N2 | 7.71±0.03 b | 7.84±0.01 cd | 7.78 | 0.012 |
D3N3 | 7.54±0.06 ef | 7.82±0.03 cd | 7.68 | 0.026 |
D3N4 | 7.51±0.01 f | 7.99±0.03 ab | 7.75 | 0.044 |
氮肥水平Nitrogen level(N) | * | *** | ||
栽植密度Planting density(D) | *** | *** | ||
N×D | *** | *** |
表1 氮肥水平与栽植密度对水稻成熟期不同土层pH值的影响
Table 1 Effect of nitrogen fertilizer level and planting density on pH of different soil layers in rice maturity.
处理 Treatment | 土层深度 Soil layer | 均值 Average value | 变异系数 Coefficient of variation | |
---|---|---|---|---|
0–20 cm | 20–40 cm | |||
D1N1 | 7.72±0.06 b | 7.87±0.02 c | 7.80 | 0.014 |
D1N2 | 7.69±0.01 bc | 7.75±0.01 e | 7.72 | 0.005 |
D1N3 | 7.87±0.06 a | 7.99±0.09 ab | 7.93 | 0.011 |
D1N4 | 7.91±0.05 a | 8.03±0.02 a | 7.97 | 0.011 |
D2N1 | 7.69±0.01 bc | 7.98±0.02 ab | 7.84 | 0.026 |
D2N2 | 7.65±0.04 bcd | 7.80±0.02 de | 7.73 | 0.014 |
D2N3 | 7.63±0.05 cd | 7.74±0.06 e | 7.69 | 0.010 |
D2N4 | 7.59±0.01 de | 7.66±0.07 f | 7.63 | 0.006 |
D3N1 | 7.69±0.03 bc | 7.94±0.02 b | 7.82 | 0.023 |
D3N2 | 7.71±0.03 b | 7.84±0.01 cd | 7.78 | 0.012 |
D3N3 | 7.54±0.06 ef | 7.82±0.03 cd | 7.68 | 0.026 |
D3N4 | 7.51±0.01 f | 7.99±0.03 ab | 7.75 | 0.044 |
氮肥水平Nitrogen level(N) | * | *** | ||
栽植密度Planting density(D) | *** | *** | ||
N×D | *** | *** |
图2 氮肥水平与栽植密度对水稻成熟期不同土层碱解氮含量的影响图柱上方不同小写字母表示不同处理间0–20 cm土层在P<0.05水平上差异显著;不同大写字母表示不同处理间20–40cm土层在P<0.05上差异显著。图3~4同。
Fig. 2. Effect of nitrogen fertilizer level and planting density on alkali nitrogen content in different soil layers during rice maturity. Different lowercase letters above the bars indicate significant difference between the 0-20cm soil layers at P<0.05 level, and different capital letters indicate significant difference between 20–40 cm soil layer at P <0.05 level. The same as in figures below.
因素分析 Factor analysis | 碱解氮 Alkaline nitrogen | 速效磷 Available phosphorus | 速效钾 Available potassium | |||||
---|---|---|---|---|---|---|---|---|
0–20 cm | 20–40 cm | 0–20 cm | 20–40 cm | 0–20 cm | 20–40 cm | |||
氮肥水平Nitrogen level | *** | *** | NS | *** | *** | *** | ||
栽植密度Density | *** | ** | *** | *** | *** | *** | ||
N×D | *** | ** | ** | *** | *** | *** |
表2 氮肥水平与栽植密度对水稻土壤碱解氮、速效磷、速效钾含量的影响因素分析
Table 2 Effects of nitrogen fertilizer level and planting density on the contents of alkali nitrogen, available phosphorus and available potassium in rice soil.
因素分析 Factor analysis | 碱解氮 Alkaline nitrogen | 速效磷 Available phosphorus | 速效钾 Available potassium | |||||
---|---|---|---|---|---|---|---|---|
0–20 cm | 20–40 cm | 0–20 cm | 20–40 cm | 0–20 cm | 20–40 cm | |||
氮肥水平Nitrogen level | *** | *** | NS | *** | *** | *** | ||
栽植密度Density | *** | ** | *** | *** | *** | *** | ||
N×D | *** | ** | ** | *** | *** | *** |
图3 氮肥水平与栽植密度对水稻成熟期不同土层速效磷含量的影响
Fig. 3. Effect of nitrogen fertilizer level and planting density on available phosphorus content in different soil layers during rice maturity.
图4 氮肥水平与栽植密度对水稻成熟期不同土层速效钾含量的影响
Fig. 4. Effect of nitrogen fertilizer level and planting density on available potassium content in different soil layers during rice maturity.
处理 Treatment | 土壤层次 Soil level | 均值 Average value | 变异系数 Coefficient of variation | |
---|---|---|---|---|
0–20 cm | 20–40 cm | |||
D1N1 | 25.1±1.2 ab | 14.7±0.3 de | 19.9 | 0.37 |
D1N2 | 20.8±2.7 d | 18.8±1.1 ab | 19.8 | 0.07 |
D1N3 | 21.2±0.6 cd | 12.7±1.6 e | 17.0 | 0.35 |
D1N4 | 25.7±0.9 a | 16.0±2.0 cd | 20.9 | 0.33 |
D2N1 | 22.4±0.5 bcd | 19.6±0.7 a | 21.0 | 0.09 |
D2N2 | 25.0±2.8 ab | 17.3±1.0 abc | 21.2 | 0.26 |
D2N3 | 23.7±0.5 abc | 17.9±1.8 abc | 20.8 | 0.20 |
D2N4 | 24.1±0.7 ab | 19.0±1.6 ab | 21.6 | 0.17 |
D3N1 | 23.2±0.5 bc | 16.7±0.4 bcd | 20.0 | 0.23 |
D3N2 | 24.8±1.9 ab | 16.2±0.5 cd | 20.5 | 0.30 |
D3N3 | 22.6±2.7 bcd | 16.8±1.9 bcd | 19.7 | 0.21 |
D3N4 | 22.9±0.3 bc | 12.9±2.3 e | 17.9 | 0.40 |
氮肥水平Nitrogen level(N) | * | *** | ||
栽植密度Planting density(D) | NS | * | ||
N×D | ** | *** |
表3 氮肥水平与栽植密度对水稻成熟期不同土层有机质含量的影响
Table 3 Effect of nitrogen fertilizer level and planting density on organic matter content in different soil layers during rice maturity. g/kg
处理 Treatment | 土壤层次 Soil level | 均值 Average value | 变异系数 Coefficient of variation | |
---|---|---|---|---|
0–20 cm | 20–40 cm | |||
D1N1 | 25.1±1.2 ab | 14.7±0.3 de | 19.9 | 0.37 |
D1N2 | 20.8±2.7 d | 18.8±1.1 ab | 19.8 | 0.07 |
D1N3 | 21.2±0.6 cd | 12.7±1.6 e | 17.0 | 0.35 |
D1N4 | 25.7±0.9 a | 16.0±2.0 cd | 20.9 | 0.33 |
D2N1 | 22.4±0.5 bcd | 19.6±0.7 a | 21.0 | 0.09 |
D2N2 | 25.0±2.8 ab | 17.3±1.0 abc | 21.2 | 0.26 |
D2N3 | 23.7±0.5 abc | 17.9±1.8 abc | 20.8 | 0.20 |
D2N4 | 24.1±0.7 ab | 19.0±1.6 ab | 21.6 | 0.17 |
D3N1 | 23.2±0.5 bc | 16.7±0.4 bcd | 20.0 | 0.23 |
D3N2 | 24.8±1.9 ab | 16.2±0.5 cd | 20.5 | 0.30 |
D3N3 | 22.6±2.7 bcd | 16.8±1.9 bcd | 19.7 | 0.21 |
D3N4 | 22.9±0.3 bc | 12.9±2.3 e | 17.9 | 0.40 |
氮肥水平Nitrogen level(N) | * | *** | ||
栽植密度Planting density(D) | NS | * | ||
N×D | ** | *** |
处理 Treatment | 产量 Yield/(kg·hm-2) | 千粒重 Thousand seed weight/g | 穗数 Number of panicles per 667m2/(×104) | 穗粒数 Grain number per panicle | 结实率 Seed setting rate/% | 氮肥农学利用效率 Nitrogen fertilizer agricultural utilization efficiency/(kg·kg-1) | 肥料偏生产力 Fertilizer partial productivity/( kg·kg-1) |
---|---|---|---|---|---|---|---|
D1N1 | 11124.1±799.2 b | 22.5±0.3 cd | 220.3±16.7 d | 224.7±12.3 abc | 89.0±1.2 abc | / | 49.44 |
D1N2 | 11957.9±299.7 b | 21.2±0.4 f | 246.0±13.8 cd | 229.7±8.7 a | 89.3±1.1 ab | 3.86 | 27.12 |
D1N3 | 12331.7±949.1 b | 24.1±0.7 a | 248.6±7.9 cd | 205.9±10.8 cd | 87.5±0.7 cde | 4.19 | 24.04 |
D1N4 | 11338.7±49.9 c | 21.3±1.2 ef | 241.8±15.6 cd | 220.0±11.3 abc | 88.5±1.0 bc | 0.60 | 19.38 |
D2N1 | 13037.5±1398.6 ab | 22.9±0.5 bc | 253.6±22.1 c | 224.6±6.9 abc | 88.3±0.4 bcd | / | 57.94 |
D2N2 | 14366.2±699.3 a | 22.2±0.4 cdef | 311.0±14.7 b | 207.9±15.2 bcd | 86.8±0.7 de | 6.15 | 32.58 |
D2N3 | 14615.3±1098.9 a | 22.2±0.6 cdef | 376.7±20.7 a | 174.8±13.7 e | 89.3±1.3 ab | 5.47 | 28.49 |
D2N4 | 13165.6±449.6 b | 22.4±0.7 cde | 321.1±19.3 b | 182.9±12.2 e | 86.5±0.5 e | 0.36 | 22.51 |
D3N1 | 8221.1±499.5 d | 22.2±0.8 cdef | 164.4±9.5 e | 224.9±10.9 abc | 90.1±0.6 a | / | 36.54 |
D3N2 | 9259.1±749.3 cd | 23.7±1.1 ab | 172.4±14.5 e | 226.4±7.3 ab | 88.9±0.8 abc | 4.81 | 21.00 |
D3N3 | 9466.7±499.5 c | 21.1±0.2 f | 233.7±18.9 cd | 191.9±16.0 de | 86.4±0.7 e | 4.33 | 18.45 |
D3N4 | 11999.5±1148.9 b | 21.7±0.3 def | 236.2±26.7 cd | 233.9±14.8 a | 89.2±1.3 ab | 10.49 | 20.51 |
氮肥水平Nitrogen level(N) | *** | NS | *** | *** | * | ||
密度Growing density(D) | * | NS | *** | *** | * | ||
N×D | *** | *** | *** | * | *** |
表4 氮肥水平与栽植密度互作对水稻产量、构成因子及肥料利用效率的影响
Table 4 Effects of interaction between nitrogen level and planting density on rice yield, its components and fertilizer use efficiency.
处理 Treatment | 产量 Yield/(kg·hm-2) | 千粒重 Thousand seed weight/g | 穗数 Number of panicles per 667m2/(×104) | 穗粒数 Grain number per panicle | 结实率 Seed setting rate/% | 氮肥农学利用效率 Nitrogen fertilizer agricultural utilization efficiency/(kg·kg-1) | 肥料偏生产力 Fertilizer partial productivity/( kg·kg-1) |
---|---|---|---|---|---|---|---|
D1N1 | 11124.1±799.2 b | 22.5±0.3 cd | 220.3±16.7 d | 224.7±12.3 abc | 89.0±1.2 abc | / | 49.44 |
D1N2 | 11957.9±299.7 b | 21.2±0.4 f | 246.0±13.8 cd | 229.7±8.7 a | 89.3±1.1 ab | 3.86 | 27.12 |
D1N3 | 12331.7±949.1 b | 24.1±0.7 a | 248.6±7.9 cd | 205.9±10.8 cd | 87.5±0.7 cde | 4.19 | 24.04 |
D1N4 | 11338.7±49.9 c | 21.3±1.2 ef | 241.8±15.6 cd | 220.0±11.3 abc | 88.5±1.0 bc | 0.60 | 19.38 |
D2N1 | 13037.5±1398.6 ab | 22.9±0.5 bc | 253.6±22.1 c | 224.6±6.9 abc | 88.3±0.4 bcd | / | 57.94 |
D2N2 | 14366.2±699.3 a | 22.2±0.4 cdef | 311.0±14.7 b | 207.9±15.2 bcd | 86.8±0.7 de | 6.15 | 32.58 |
D2N3 | 14615.3±1098.9 a | 22.2±0.6 cdef | 376.7±20.7 a | 174.8±13.7 e | 89.3±1.3 ab | 5.47 | 28.49 |
D2N4 | 13165.6±449.6 b | 22.4±0.7 cde | 321.1±19.3 b | 182.9±12.2 e | 86.5±0.5 e | 0.36 | 22.51 |
D3N1 | 8221.1±499.5 d | 22.2±0.8 cdef | 164.4±9.5 e | 224.9±10.9 abc | 90.1±0.6 a | / | 36.54 |
D3N2 | 9259.1±749.3 cd | 23.7±1.1 ab | 172.4±14.5 e | 226.4±7.3 ab | 88.9±0.8 abc | 4.81 | 21.00 |
D3N3 | 9466.7±499.5 c | 21.1±0.2 f | 233.7±18.9 cd | 191.9±16.0 de | 86.4±0.7 e | 4.33 | 18.45 |
D3N4 | 11999.5±1148.9 b | 21.7±0.3 def | 236.2±26.7 cd | 233.9±14.8 a | 89.2±1.3 ab | 10.49 | 20.51 |
氮肥水平Nitrogen level(N) | *** | NS | *** | *** | * | ||
密度Growing density(D) | * | NS | *** | *** | * | ||
N×D | *** | *** | *** | * | *** |
相关系数 Correlation coefficient | 土壤pH Soil pH | 土壤碱解氮 Soil alkaline nitrogen | 土壤速效磷 Soil available phosphorus | 土壤速效钾 Soil available potassium | 土壤有机质 Soil organic matter | 氮肥农学利用效率 Nitrogen fertilizer agricultural utilization efficiency | 肥料偏生产力 Fertilizer partial productivity | 水稻产量 Yield |
---|---|---|---|---|---|---|---|---|
土壤pH Soil pH value | 1.00 | |||||||
土壤碱解氮Soil alkaline nitrogen | -0.31 | 1.00 | ||||||
土壤速效磷Soil available phosphorus | 0.38 | -0.09 | 1.00 | |||||
土壤速效钾Soil available potassium | -0.33 | 0.04 | 0.32 | 1.00 | ||||
土壤有机质Soil organic matter | 0.13 | -0.08 | -0.29 | -0.13 | 1.00 | |||
氮肥农学利用效率 Nitrogen fertilizer agronomy utilization efficiency | -0.38 | 0.58* | -0.15 | 0.02 | -0.24 | 1.00 | ||
肥料偏生产力Fertilizer partial productivity | 0.17 | 0.03 | 0.52* | -0.22 | 0.15 | 0.17 | 1.00 | |
水稻产量Yield | -0.32 | -0.25 | 0.57* | 0.44* | 0.07 | 0.06 | 0.14 | 1.00 |
表5 水稻成熟期0–20 cm植稻土壤养分与水稻产量及肥料利用率的相关性分析
Table 5 Correlation analysis between soil nutrient contents and rice yield and fertilizer utilization rate in 0–20 cm rice soil layer during rice maturity.
相关系数 Correlation coefficient | 土壤pH Soil pH | 土壤碱解氮 Soil alkaline nitrogen | 土壤速效磷 Soil available phosphorus | 土壤速效钾 Soil available potassium | 土壤有机质 Soil organic matter | 氮肥农学利用效率 Nitrogen fertilizer agricultural utilization efficiency | 肥料偏生产力 Fertilizer partial productivity | 水稻产量 Yield |
---|---|---|---|---|---|---|---|---|
土壤pH Soil pH value | 1.00 | |||||||
土壤碱解氮Soil alkaline nitrogen | -0.31 | 1.00 | ||||||
土壤速效磷Soil available phosphorus | 0.38 | -0.09 | 1.00 | |||||
土壤速效钾Soil available potassium | -0.33 | 0.04 | 0.32 | 1.00 | ||||
土壤有机质Soil organic matter | 0.13 | -0.08 | -0.29 | -0.13 | 1.00 | |||
氮肥农学利用效率 Nitrogen fertilizer agronomy utilization efficiency | -0.38 | 0.58* | -0.15 | 0.02 | -0.24 | 1.00 | ||
肥料偏生产力Fertilizer partial productivity | 0.17 | 0.03 | 0.52* | -0.22 | 0.15 | 0.17 | 1.00 | |
水稻产量Yield | -0.32 | -0.25 | 0.57* | 0.44* | 0.07 | 0.06 | 0.14 | 1.00 |
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