[1]杨苏,叶雪峰,章欢,等.褐煤腐殖酸用量对玉米生长及黄河故道潮土养分含量的影响[J].江苏农业学报,2020,(04):905-910.[doi:doi:10.3969/j.issn.1000-4440.2020.04.014]
　YANG Su,YE Xue-feng,ZHANG Huan,et al.Effects of lignite humic acid on corn growth and nutrient content in fluvo-aquic soil along the Yellow River[J].,2020,(04):905-910.[doi:doi:10.3969/j.issn.1000-4440.2020.04.014]
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褐煤腐殖酸用量对玉米生长及黄河故道潮土养分含量的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年04期
页码:
905-910
栏目:
耕作栽培·资源环境
出版日期:
2020-08-31

文章信息/Info

Title:
Effects of lignite humic acid on corn growth and nutrient content in fluvo-aquic soil along the Yellow River
作者:
杨苏1; 2; 叶雪峰1; 章欢3; 李辉信1; 张永春2; 艾玉春2; 汪吉东2
(1.南京农业大学资源与环境科学学院，江苏南京210095；2.江苏省农业科学院农业资源与环境研究所/农业农村部江苏耕地保育科学观测实验站，江苏南京210014；3.江苏大学农业装备工程学院，江苏镇江212013）
Author(s):
YANG Su1; 2; YE Xue-feng1; ZHANG Huan3; LI Hui-xin1; ZHANG Yong-chun2; AI Yu-chun2; WANG Ji-dong2
(1.College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China;2.Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences/Scientific observing and Experimental Station for Farmland Conservation(Jiangsu), Ministry of Agriculture and Rural Affairs, Nanjing 210014, China;3.College of Agricultural Equipment Engineering, Jiangsu University, Zhenjiang 212013, China)
关键词:
褐煤腐殖酸; 潮土; 玉米根系; 土壤养分; 养分吸收量
Keywords:
lignite humic acid; fluvo-aquic soil;  maize root; soil nutrient; nutrient uptake
分类号:
S158
DOI:
doi:10.3969/j.issn.1000-4440.2020.04.014
文献标志码:
A
摘要:
腐殖酸具有培肥土壤，促进作物生长和养分吸收的作用，褐煤中腐殖酸含量高，近年来备受关注。探究褐煤腐殖酸用量对作物生长及潮土养分含量的影响对明确褐煤腐殖酸的增产潜力，提高褐煤腐殖酸资源利用效率具有重要意义。本研究采用盆栽试验方法，在施用氮、磷、钾肥的基础上，设置5个褐煤腐殖酸用量，分别为CK(0 g/kg）、F1(10 g/kg）、F2(20 g/kg）、F3(40 g/kg）和F4(80 g/kg）。结果表明，褐煤腐殖酸施用可显著增加玉米产量、干物质量和养分吸收量。随施用量的增加，玉米植株对氮、磷、钾的吸收量呈先上升后下降的趋势，F2处理吸收量最大。与CK相比，当施用量≥10 g/kg时，玉米苗期总根长显著增加(P<0.05），当施用量达到20 g/kg时，根总投影面积显著增加。褐煤腐殖酸显著增加土壤有机质、全氮和速效钾含量(P<0.05），降低速效磷和pH，其中施用量20 g/kg(F2处理）对全氮和速效钾的增幅最大。综上所述，褐煤腐殖酸用量为20 g/kg时对玉米生长和潮土培肥效果最佳，可获得最大的经济效益。
Abstract:
Humic acid can improve soil fertilizer, promote crop growth and nutrient absorption. The content of humic acid in lignite is high, which has attracted much attention in recent years. Exploring the effects of lignite humic acid on crop growth and nutrient content in fluvo-aquic soil is of great significance to clarify the yield-increasing potential of lignite humic acid and improve the utilization efficiency. In this study, five treatments were set up in the pot experiment. Based on the application of nitrogen, phosphorus and potassium fertilizers, lignite humic acid with the contents of 0 g/kg(CK), 10 g/kg(F1), and 20 g/kg(F2), 40 g/kg(F3) and 80 g/kg(F4) was applied. The results showed that the application of lignite humic acid could significantly increase maize yield, dry matter weight and nutrient uptake. With the increase of the application rate, the absorption of nitrogen, phosphorus and potassium increased first and then decreased, and the absorption amount in F2 treatment was the largest. Compared with the control, the total root length of corn at seedling stage was significantly increased (P<0.05) when the application rate of lignite humic acid was not less than 10 g/kg. When the application amount reached 20 g/kg, the tatl root projection area increased significantly. Lignite humic acid significantly increased the contents of soil organic matter, total nitrogen and available potassium (P<0.05), and decreased available phosphorus content and pH. Moreover, the increasing extent of total nitrogen and available potassium was largest in F2 treatment. In summary, the treatment of 20 g/kg lignite humic acid has the best effect, and can the treatment the maximum economic benefits.

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备注/Memo

备注/Memo:
收稿日期：2019-12-10基金项目：江苏省农业科技自主创新基金项目[CX(17）-1001]；国家重点研发计划项目(2018YFD0800301）；江苏省重点研发计划项目(BE2019378）作者简介：杨苏(1994-），女，山东烟台人，硕士研究生，主要从事土壤修复与养分均衡的研究。(E-mail）2017103075@njau.edu.cn通讯作者：李辉信，(E-mail）huixinli@njau.edu.cn
更新日期/Last Update: 2020-09-08