摘要
【目的】研究配施不同用量的黄腐酸对新疆拜城县膜下滴灌玉米产量及氮肥利用率的影响,筛选出适宜拜城县膜下滴灌玉米的黄腐酸的用量。【方法】以新玉31号品种为研究对象,在施用相同氮磷钾(N 240 kg/hm 2、P 2 O 5150 kg/hm 2、K 2 O 90 kg/hm 2)的基础上,以单施氮肥处理为对照,分析施不同用量的黄腐酸对玉米产量及氮肥利用率的影响。【结果】相对于单施氮肥处理,合理施黄腐酸(180~270 kg/hm 2)能显著增加玉米的产量,增产率为10.2%~12.6%,玉米氮肥利用率提高8.0~10.5个百分点,但收获后土壤中的硝态氮和铵态氮的含量没有显著增加。大量施用黄腐酸(450 kg/hm 2)能显著增加玉米的生物量、氮肥利用率以及收获后土壤中的硝态氮和铵态氮的含量,但是产量降低,减产率为3.5%。【结论】对玉米产量和氮肥利用率与黄腐酸用量进行综合分析,适宜的黄腐酸用量为180~270 kg/hm 2。
【Objective】To find out the effects of different dosage of yellow humic acid on the yield and nitrogen fertilizer utilization rate of corn drip irrigation under membrane in Baicheng County,Xinjiang so as to screen out the amount suitable.【Method】This experiment was conducted with Xinyu No.31 variety as the research object.On the basis of applying the same NPK(N 240 kg/hm 2,P 2 O 5150 kg/hm 2,K 2 O 90 kg/hm 2),the nitrogen fertilizer treatment was used as a control to analyze the effects of different amounts of fulvic acid on maize yield and nitrogen use efficiency.【Result】Compared with the single application of nitrogen fertilizer,reasonable application of fulvic acid(180-270 kg/hm 2)could significantly increase the yield of maize,the yield increase was from 10.2%to 12.6%,and the nitrogen use efficiency of maize was increased by 8.0%-10.5%.However,the content of nitrate nitrogen and ammonium nitrogen in the soil did not increase significantly after harvest.Large application of fulvic acid(450 kg/hm 2)significantly increased maize biomass,nitrogen use efficiency,and nitrate and ammonium nitrogen content in the soil after harvest,but yield did not increase significantly,on the contrary,it dropped by 3.5%.【Conclusion】Through comprehensive analysis of the maize yield,nitrogen use efficiency and fulvic acid dosage,it is concluded that the suitable amount of fulvic acid under the test conditions is 180-270 kg/hm 2.
作者
芦大伟
李青军
陈署晃
耿庆龙
赖宁
刘国宏
LU Da-wei;LI Qing-jun;CHEN Shu-huang;GENG Qing-long;LAI Ning;LIU Guo-hong(Baicheng Agricultural Test Station,Xinjiang Academy of Agricultural Sciences,Baicheng Xinjiang 842300,China;Research Institute of Soil,Fertilizer and Agricultural Water Conservation,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China)
出处
《新疆农业科学》
CAS
CSCD
北大核心
2019年第10期1888-1894,共7页
Xinjiang Agricultural Sciences
基金
中央引导地方科技发展专项资金“新疆遥感与农业大数据应用服务平台”
农业部专项资金“耕地质量等级调查评价”
科技厅资源共享平台建设项目(PT1709)~~
关键词
滴灌玉米
黄腐酸
氮肥
产量
氮肥利用率
drip irrigated maize
fulvic acid
nitrogen
yield
nitrogen use efficiency
