摘要
为探讨不同施氮量对油莎豆叶片生理特性、籽粒品种和产量的影响,为油莎豆种植合理施肥、改善品质和提高产量提供理论依据.采用田间随机区组试验,共设置0,60,120,180 kg·hm^(-2)纯氮共4个氮肥处理,研究了施氮量对叶片的抗氧化特性、籽粒的品质及产量的影响.结果表明,油莎豆叶片SOD活性、POD活性、CAT活性和SPAD值均随施肥水平的增加呈先升高后降低的趋势,MDA含量变化呈相反趋势,籽粒总糖、籽粒全氮、籽粒全磷和籽粒脂肪随施氮量的增加呈先升高后降低趋势,全钾呈持续上升趋势,当施氮量为120 kg·hm^(-2)时叶片生理性状、籽粒品质和产量各性状均达到峰值;相关分析表明,产量和叶片POD活性、籽粒脂肪呈显著正相关,与SPAD值呈极显著正相关.表明,油莎豆栽培最适宜施肥量为120 kg·hm^(-2),应选用叶片SOD活性、籽粒全氮和籽粒总糖等性状较好的品种.
The effects of nitrogen application rates on leaf physiological characteristics,seed varieties and yield of Cyperus alopecuroides were investigated to provide theoretical basis for rational fertilization,quality improvement and yield increase.A field randomized block experiment was conducted using nitrogen treatments of either 0,60,120,or 180 kg·hm-2.Parameters monitored were antioxidant characteristics of leaves,grain quality and yield.The SOD,POD,and CAT activities and SPAD value increased first and then decreased with the increase of fertilization level.MDA content changed in the opposite direction.Total sugar,nitrogen,phosphorus and fat of grains increased first and then decreased with the increase of nitrogen application,and total potassium continued to increase.When the nitrogen application was 120 kg·hm-2,the leaf physiological characters,grain quality and yield reached peak value.Correlation analysis showed that there was a significant positive correlation between yield and leaf POD activity,grain fat,and SPAD value.The most suitable fertilization concentration was 120 kg·hm-2,and varieties with better leaf SOD activity,grain total nitrogen and grain total sugar should be selected.
作者
孙佳尧
李志刚
孟祥军
曹帅
王晓东
向殿军
何德鑫
阿如汗
张翠平
刘鹏
SUN Jia-yao;LI Zhi-gang;MENG Xiang-jun;CAO Shuai;WANG Xiao-dong;XIANG DIAN-jun;HE De-xin;Aruhan;ZHANG Cui-ping;LIU Peng(College of Agriculture,Inner Mongolia University for Nationalities,Tongliao 028043,China;Inner Mongolia Malachin Biological Technology Limited Company,Tongliao 028000,China)
出处
《内蒙古民族大学学报（自然科学版）》
2020年第4期327-332,共6页
Journal of Inner Mongolia Minzu University：Natural Sciences
基金
内蒙古自治区科技计划项目2017(KJJH1702)
内蒙古自治区科技储备项目(2018MDCB02)
内蒙古民族大学研究生科研项目(NMDSS1951)。
关键词
油莎豆
抗氧化特性品质
施氮量
产量
Cyperus esculentus
Antioxidant properties and quality
Nitrogen application amount
Yield
