摘要
在不同盐渍化程度土壤上研究了腐植酸增效复混肥料对小麦产量和氮肥利用率的影响,设置了空白(CK)、磷钾肥对照(CK1)、常规复混肥料(CF)和腐植酸增效复混肥料(HF)处理,在轻度(S1)、中度(S2)、重度(S3)3种盐渍化程度土壤上,连续2年进行了小麦的田间试验,以探究腐植酸增效复混肥料对小麦产量、氮肥吸收利用及小麦全生育期土壤硝态氮和铵态氮动态变化的影响。结果表明,与常规复混肥料相比,施用腐植酸增效复混肥料,1)有效提高小麦产量,平均提高幅度为25.26%(2018年)和19.17%(2019年),不同盐渍化程度土壤上小麦的穗数、穗粒数和千粒重均有所增加;2)促进小麦对氮素的吸收,氮素总累积量增幅为11.25~36.75 kg/hm~2(2018年)和9.90~49.80 kg/hm~2(2019年),在轻、中、重度盐碱土壤上,腐植酸复混肥料增产幅度分别为31.68%、20.53%、23.56%(2018年)和33.28%、18.86%、5.36%(2019年);3)氮肥利用率提高6.29~16.73个百分点(2018年)和5.47~27.69个百分点(2019年);4)明显增加0~20 cm土壤硝态氮含量,土壤铵态氮含量则下降;5)土壤盐渍化程度直接影响小麦产量、氮素吸收等,施用腐植酸增效复混肥料较常规复混肥料促进植株氮素吸收,小麦产量及氮肥利用率随土壤盐渍度降低而提高,建议低度、中度盐渍化土壤上施用腐植酸增效复混肥料。
In this paper,the effects of humic acid enhanced effect compound fertilizer on wheat yield and nitrogen utilization rate were studied in soil with different salinization degrees.Four treatments were set up:no fertilizer control(CK),only phosphorus and potassium fertilizer control(CK1),conventional compound fertilizer(CF)and humic acid enhanced effect compound fertilizer(HF)treatment with equal amount of nitrogen.The field experiment was conducted in three degrees of saline soil for two consecutive years of wheat to explore the effect of humic acid enhanced effect compound fertilizer on wheat yield,nitrogen uptake and dynamic change of soil ammonium nitrogen and nitrate in the whole stages of wheat.The results showed that compared with conventional compound fertilizer,1)Humic acid enhanced effect compound fertilizer treatment increased wheat yield effectively,with an average increase of 25.26%(2018)and 19.17%(2019),and the number of ears,grains per ear and 1000-grain weight of wheat increased at different salinization degrees;2)Humic acid enhanced effect compound fertilizer promoted the uptake of nitrogen by wheat,the total accumulation of nitrogen increased by 11.40~36.75 kg/hm2(2018)and 9.90~49.80 kg/hm2(2019).In light,moderate and heavy saline soils,the yield increases of humic acid enhanced effect compound fertilizer were 31.68%,20.53%,23.56%(2018)and 33.28%,18.86%,5.36%(2019),respectively.3)Humic acid enhanced effect compound fertilizer increased the utilization rate of N fertilizer by 6.29~16.73 percentage points(2018)and 5.47~27.69 percentage points(2019).4)Humic acid enhanced effect compound fertilizer significantly increased the nitrate content in 0~20 cm,while reduced the content of soil ammonium nitrogen.5)The degree of soil salinization directly affected the wheat yield and nitrogen absorption,etc.The application of humic acid enhanced compound fertilizer promoted the plant nitrogen absorption compared with conventional compound fertilizer,and the wheat yield and nitrogen utilization rate increased with the decrease of soil salinity.It is suggested to apply humic acid enhanced effect compound fertilizer on low and moderate salinized soil.
作者
杨柳
李絮花
胡斌
YANG Liu;LI Xu-hua;HU Bin(National Engineering Laboratory for Efficient Utilization of Soil Resources,College of Resources and Environment Shandong Agricultural University,Taian Shandong 271018;Soil Fertilizer Technical Instruction Station of Wujiang District,Suzhou Jiangsu 215000;Shandong Soil and Fertilizer Workstation,Jinan Shandong 250000)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2021年第2期123-132,共10页
Soil and Fertilizer Sciences in China
基金
山东省重点研发计划(2017CXGC0301)
“十三五”国家重点研发计划项目(2016YFD0200402)。
关键词
腐植酸增效复混肥料
盐渍化程度
小麦
产量
氮肥利用率
humic acid enhanced effect compound fertilizer
degree of salinization
wheat
production
nitrogen utilization rate
作者简介
杨柳(1995-),女,山东烟台人,硕士研究生,主要研究植物营养调控和机理。E-mail:1017053432@qq.com。;通讯作者:李絮花,E-mail:lixh64@163.com;通讯作者:胡斌,E-mail:sdtfmail@163.com。
