不同施肥模式对水稻养分吸收利用及土壤养分平衡的影响
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S147.2

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科技基础条件与平台建设计划(20160623030TC);国家重点研发计划(2017YFD0300604);国际植物营养研究所(IPNI)项目(BFDP-Jilin-2016)


Effects of Different Fertilization Patterns on Nutrient Absorption, Utilization and Soil Nutrient Balance of Rice
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    摘要:

    为探讨不同施肥模式下水稻产量及其农田养分平衡状况,通过连续2年(2014~2015)田间试验,研究传统施肥模式与优化施肥模式对水稻产量、养分吸收利用,收获期土壤氮、磷、钾含量及收支平衡的影响。结果表明,2014年和2015年,优化施肥处理水稻产量较传统施肥处理分别提高7.6%和6.5%。与传统施肥处理相比,优化施肥处理水稻肥料当季回收率分别提高6.8和8.4个百分点,农学利用率分别提高2.9 kg/kg和3.1 kg/kg,偏生产力分别提高5.6 kg/kg和5.4kg/kg,养分收获指数分别提高4.4和4.5个百分点。差异均达显著水平(P<0.05)。与传统施肥处理相比,优化施肥处理可提高水稻氮、磷、钾最大吸收速率,并可提高水稻灌浆期至成熟期养分积累量。与试验起始时相比,传统施肥处理0~90cm土壤无机氮与0~30 cm土壤有效磷含量均有明显的提高,0~30 cm土壤速效钾含量下降。而优化施肥处理0~90 cm土壤无机氮含量、0~30 cm土壤有效磷和速效钾含量与试验起始时变化幅度较小。水稻收获期土壤氮、磷、钾养分表观平衡估算的结果表明,优化施肥和农民习惯施肥土壤氮、磷素均出现盈余,钾素亏缺。与传统施肥处理相比,优化施肥处理氮盈余量分别下降87.6%和93.5%,磷盈余量分别下降87.7%和77.4%,钾亏缺量分别下降23.6%和23.5%,差异均达显著水平(P<0.05)。综上所述,优化施肥模式在提高水稻产量、养分吸收利用及维持土壤养分平衡等方面均优于传统施肥模式。

    Abstract:

    In order to discuss rice yield and the status of farmland nutrient balance under different fertilization pat-terns, field experiment was conducted to study the effects of rice yield, nutrient absorption and utilization, soil N, Pand K contents in harvest stage under traditional and optimum fertilization patterns from 2014 to 2015. The results showed that rice yield of optimum fertilization(OF) treatment increased by 7.6% and 6.5% than that of traditional fertilization(TF) treatment from 2014 to 2015, respectively. Compared with TF treatment, fertilizer recovery efficiency, agronomic efficiency, partial fertilizer productivity and nutrient harvest index of OF treatment significantly in-creased by 6.8% and 8.4%, 2.9 kg/kg and 3.1 kg/kg, 5.6 kg/kg and 5.4 kg/kg, 4.4% and 4.5%, respectively(P<0.05). OF treatment could improve the maximum uptake rate of N, P and K and nutrient accumulation from filling stage to mature stage of rice than TF treatment. Compared with the starting of experiment, the contents of inorganicN in 0-90 cm soil and available P in 0-30 cm soil increased significantly, and available K in 0-30 cm soil declined of TF treatment, while the contents of inorganic N in 0-90 cm soil and available P, K in 0-30 cm soil had fewer changes of OF treatment. The calculation of soil N, P and K nutrient apparent balance indicated that it was surplus in soil N and P, and deficient in soil K of TF and OF treatments in harvest stage of rice. Compared with TF treatment, N surplus amounts, P surplus amounts and K deficient amounts significantly decreased by 87.6% and 93.5%,87.7% and 77.4%, 23.6% and 23.5% of OF treatment, respectively(P<0.05). In summary, rice yield, nutrient absorption and utilization, and soil nutrient balance of optimum fertilization patterns were better than them of traditional fertilization patterns.

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侯云鹏,孔丽丽,李前,秦裕波,于雷,谢佳贵,尹彩侠.不同施肥模式对水稻养分吸收利用及土壤养分平衡的影响[J].东北农业科学,2018,43(1):1-8.

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  • 收稿日期:2017-09-25
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  • 在线发布日期: 2024-12-06
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