氮磷肥不同配比对河套地区春小麦产量、品质及养分利用的影响
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作者单位:

(1.内蒙古农业大学农学院,内蒙古 呼和浩特 010019;2.内蒙古自治区耕地保护与质量监测中心,内蒙古 呼和浩特 010019)

作者简介:

赵志伟(1997-),博士研究生,主要从事小麦栽培生理研究。E-mail:imauzzw@163.com。

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基金项目:

基金项目:内蒙古“科技兴蒙”行动重点专项(NMKJXM202013,NMKJXM202111-3);内蒙古科技计划项目(2019GG236)。


Effects of different nitrogen and phosphorus fertilizer application on grain yield,quality and nutrient use efficien-cy of spring wheat in Hetao irrigation district
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Affiliation:

(1.College of Agronomy,Inner Mongolia Agricultural University,Huhhot Inner Mongolia 010019;2.Cultivated Land Protection and Quality Monitoring Center,Inner Mongolia,Huhhot Inner Mongolia 010019)

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    摘要:

    为河套灌区春小麦实现减肥、高产、高效、优质相统一的适宜施肥措施提供依据,在基施225 kg·hm-2生物有机肥条件下,以农户习惯施肥量即P2O5 241.9 kg·hm-2、N 370.5 kg·hm-2为基础逐级减施磷肥和氮肥,田间设置不同施磷量和施氮量两因素4水平完全随机区组试验,明确基施生物有机肥条件下,不同化肥施用量对小麦产量、肥料利用和籽粒品质的影响。结果表明,同等施磷水平下,产量、穗数、穗粒数、千粒重均随施氮量的减少呈先升高后降低的趋势;同等施氮水平下,产量及其构成因素随施磷量的减少也呈先升高后降低的趋势。同等施氮水平下,植株含氮率、吸氮量、氮肥表观利用率、氮肥农学效率、氮肥偏生产力和植株含磷率、吸磷量、磷肥农学效率随施磷量的减少表现为单峰曲线的变化趋势,而磷肥表观利用率和磷肥偏生产力则表现为逐渐升高的趋势;同等施磷水平下,各项氮肥利用效率指标和磷肥利用效率指标均随施氮量的减少表现为单峰曲线的变化趋势。同等施氮水平下,各项籽粒品质指标均随施磷量的减少呈现先升高后降低的趋势。同等施磷水平下,除吸水率呈逐渐下降的趋势外,其余品质指标均随施氮量的减少呈先升高后降低的趋势。当施磷量(P2O5)为158.23~166.07 kg·hm-2、施氮量(纯N)为274.93~287.36 kg·hm-2时,配施生物有机肥225 kg·hm-2,可兼顾小麦产量、肥料利用效率、籽粒品质同步提升,在此施肥模式下可减少施磷量31.35%~34.59%,减少施氮量22.42%~25.79%。

    Abstract:

    The aim is to explore the fertilizer application rates to obtain high yield,high quality,and high nutrient use efficiency of spring wheat in Hetao irrigation district.A four-level completely random block test of phosphorus and nitrogen were set up based on farmer habitual fertilization amount of P2O5 241.9 kg·hm-2,N 370.5 kg·hm-2 in field under the condition of applying 225 kg·hm-2 bio-organic fertilizer.The effects of phosphorus and nitrogen application on grain yield,quality and plant nutrient use efficiency under base application of bio-organic fertilizer were determined.With the decrease of nitrogen application rate and phosphorus application rate,the yield,spikes,grains per spike and 1000-grain weight all showed the trend of increasing first and then decreased.Under the same nitrogen level,the plant nitrogen content,nitrogen accumulation,nitrogen recovery efficiency,nitrogen agronomic efficiency,nitrogen partial factor productivity and plant phosphate content,phosphate accumulation,phosphate agronomic efficiency showed a single peak curve with the decrease of phosphorus application rate,while the phosphate recovery efficiency,phosphate partial factor productivity showed a gradually increasing trend.Under the same level of phosphate,the various nitrogen and phosphorus fertilizer use efficiency indicators showed a single-peak curve change trend with the decrease of nitrogen application rate.Under the same nitrogen level,grain quality indicators showed a trend of first increasing and then decreasing with the decrease of phosphorus application rate.Under the same phosphorus application,except for water absorption gradual decrease,other quality indicators showed a trend of first increasing and then decreasing with the decrease of nitrogen application rate. The recommended phosphorus(P2O5)and nitrogen application rate (pure N)for high-yield,high-quality and high-use efficiency is 158.23~166.07 and 274.93~287.36 kg·hm-2,respectively,combined with 225 kg·hm-2 biological organic fertilizer.Under this fertilization mode,the amount of phosphorus can be reduced by 31.35%~34.59%,and the amount of nitrogen can be reduced by 22.42%~25.79%.

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赵志伟,高飞雁,罗军,盛阳阳,韩丽,张永平.氮磷肥不同配比对河套地区春小麦产量、品质及养分利用的影响[J].中国土壤与肥料,2022,(11):1-9.

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  • 收稿日期:2021-10-20
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  • 录用日期:2021-12-27
  • 在线发布日期: 2023-02-07
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