专论与研究

长期有机肥无机肥配施对水稻氮素吸收、转运及产量的影响

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  • 1贵州大学 农学院,贵阳 550025
    2贵州省农业科学院 土壤肥料研究所,贵阳 550006
    3农业农村部贵州耕地保育与农业环境科学观测实验站,贵阳 550006
    4贵州省农业科学院 茶叶研究所,贵阳 550006

第一作者:1521812180@qq.com

*通讯作者:huangxc90@163.com

收稿日期: 2021-07-08

  网络出版日期: 2021-11-20

基金资助

贵州省科学技术基金(黔科合基础[2020]1Y411);国家自然科学基金(31860132);贵州省科技平台及人才团队计划(黔科合平台人才[2018]5604);中央引导地方科技发展专项资金项目(黔科中引地[2019]4003号)

Effects of Long-term Combined Application of Organic and Inorganic Fertilizers on Nitrogen Uptake and Utilization in Rice

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  • 1College of Agriculture, Guizhou University, Guiyang 550025, China
    2Institute of Soil and Fertilizer, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
    3Guizhou Farmland Conservation and Agro-Environmental Science Observation and Experimental Station, Ministry of Agriculture and Rural Affairs, Guiyang 550006, China
    4Tea Research Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China

1st author: 1521812180@qq.com

*Corresponding author: huangxc90@163.com

Received date: 2021-07-08

  Online published: 2021-11-20

摘要

基于25年定位试验,设置6个大田试验处理(CK,不施肥;NPK,常规施用化肥;1/4M+3/4NPK,25%有机肥替代化肥;1/2M+1/2NPK, 50%有机肥替代化肥;M,100%有机肥替代化肥;MNPK, 100%化肥+100%有机肥),研究了长期有机肥无机肥配施对水稻氮素吸收和利用的影响。结果表明,水稻地上部N素总积累量与产量大小均表现为MNPK>1/4M+3/4NPK> NPK>1/2M+1/2NPK>M>CK,与NPK处理相比,MNPK和1/4M+3/4NPK处理的地上部氮素总积累量增加20.11%~27.86%、产量增加2.04%~12.42%。各处理花前N素转运量对籽粒贡献率(69.54%~84.60%)显著高于花后积累量对籽粒贡献率(15.40%~30.46%),花前N素积累是水稻植株N素的主要来源。1/4M+3/4NPK处理的氮肥偏生产力及氮收获指数均高于NPK处理,分别提高16.42%、10.29%。有机无机肥配施比单施化肥处理显著改善了稻米品质,提高了籽粒氨基酸含量,其中,非必需氨基酸含量是必需氨基酸含量的2倍左右。长期施肥条件下,25%有机肥替代化肥处理在化肥减施基础上,可以提高肥料利用率、促进水稻养分吸收,是黄壤性水稻土地区实现水稻增产、品质提升的最佳施肥措施。

本文引用格式

杨胜玲, 黄兴成, 刘彦伶, 李渝, 张艳, 张雅蓉, 张文安, 蒋太明 . 长期有机肥无机肥配施对水稻氮素吸收、转运及产量的影响[J]. 中国稻米, 2021 , 27(6) : 63 -68 . DOI: 10.3969/j.issn.1006-8082.2021.06.013

Abstract

Based on a 25-year location experiment, the effects of long-term combined application of organic and inorganic fertilizers on nitrogen absorption, utilization and yield of rice were studied. The results showed that, the total N accumulation and yield of rice aboveground were as follows: MNPK(100% chemical fertilizer+100% organic fertilizer)>1/4M+3/4NPK(25% organic fertilizer instead of chemical fertilizer)>NPK(conventional chemical fertilizer)>1/2M+1/2NPK(50% organic fertilizer instead of chemical fertilizer)>M (100% organic fertilizer instead of chemical fertilizer)>CK(no fertilization), compared with NPK, MNPK treatment and 1/4M+3/4NPK treatment increased total nitrogen accumulation in shoot by 20.11%~27.86% and yield by 2.04%~12.42%. The contribution rate of N transport before anthesis (69.54%~84.60%) was significantly higher than that of N accumulation after anthesis (15.40%~30.46%), and N accumulation before anthesis was the main source of N in rice plants. The partial productivity and nitrogen harvest index of 1/4M+3/4NPK treatment were higher than those of NPK treatment, which were increased by 16.42% and 10.29%, respectively. The combined application of organic and inorganic fertilizers significantly improved rice quality and increased the amino acid content of grains, the content of non-essential amino acids was about twice as much as that of essential amino acids. Under the long-term fertilization condition, 25% organic fertilizer instead of chemical fertilizer treatment, on the basis of reduced chemical fertilizer application, can improve the utilization rate of fertilizer and promote the absorption of rice nutrients, which is the best fertilization measure to achieve rice yield increase and quality improvement in the paddy soil area of yellow soil.

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