山西农业大学学报（自然科学版）2018，Vol.38Issue(2)：37-41,5.DOI:10.13842/j.cnki.issn1671-8151.201709009
叶面喷施氮肥对张杂谷10号光合特性及产量的影响
Effect of foliar application of nitrogen fertilizer on photosynthetic characteristics and yield of foxtail millet cultivar'Zhangzagu 10' Setaria italic(L.)Beauv
摘要
Abstract
[Objective]Compared with soil application,the foliar application of nitrogenous fertilizer(urea)possessed several benefits,such as faster absorption strong target-specific,and less application cost.The aim of the research was to determine an optimal application rate of nitrogen fertilizer in millet crop fields using foliar application method.[Methods]The crop cul-tivar Zhangzagu 10 was used as research material.Field trials were set up,and foliar application was conducted during head sprouting and pustulation period of crops with fertile solutions at six concentrations,1%,1.5%,2%,3%,4%,and 6%.. The interaction between fertilizer application and major factors of plant growth,such as the flag leaf area,SPAD value,pho-tosynthetic parameter,blade nitrate reductase activity,panicle traits on later stage and the yield was determined.[Results] The results showed that foliar application of nitrogen fertilizers produced positive effects on photosynthesis rate,the blade nitrate reductase activity,,the flag leaf area and SPAD value when applied fertilizer concentration was up to 3% with the greatest boost occurred at the concentration of 2%.,However,further increasing the fertilizer concentration above 3 %caused negative effects on all growth parameters.The grain yield was significantly impacted(p<0.05)by foliar application of nitrogen fertilizer with the same trend as shown in other parameters,[Conclusion]Under the conditions of the present study,the optimal concentration of nitrogen fertilizer by foliar application was determined as 2% when applied during head sprouting and pustulation period.The further increase of fertilizer concentration over 3% will cause burning damage to the grains which will lead to reduction of grain yield.关键词
叶面氮肥/杂交谷/SPAD/硝酸还原酶Key words
Foliar application of nitrogen fertilizer/Hybrid grain/SPAD/Nitrate reductase分类
农业科技引用本文复制引用
闫政东,郭平毅,原向阳,肖晓璐,王东明..叶面喷施氮肥对张杂谷10号光合特性及产量的影响[J].山西农业大学学报（自然科学版）,2018,38(2):37-41,5.基金项目
国家自然科学基金项目(31301269) （31301269）
国家科技支撑计划项目(2014BAD07B01-09) （2014BAD07B01-09）
山西省科技攻关项目(20150311016-2) （20150311016-2）
山西省重点研发项目(2015-TN-09) （2015-TN-09）
山西省谷子产业技术体系项目(2015-06) （2015-06）
