不同硒肥基施用量对紫花苜蓿产量、品质及养分吸收的影响  

Effect of Different Amounts of Selenium Fertilizer as Basal Dressing on Purple Alfalfa Yield,Quality and nutrient Absorption

作　　者：刘嗽[1] 赵京[1] 介晓磊[1,2] 刘世亮[1] 刘芳[1] 化党领[1] 胡华锋[3] 

机构地区：[1]河南农业大学资源与环境学院,河南省高校农业资源与环境工程技术研究中心,河南郑州450002 [2]黄淮学院,河南驻马店463000 [3]郑州牧业工程高等专科学校,河南郑州450011

出　　处：《土壤通报》2013年第2期432-436,共5页Chinese Journal of Soil Science

基　　金：国家农业科技成果转化资金项目“土─草─饲─畜系统微量元素技术中试与示范(2010GB2D000287)”;河南省科技攻关重点项目(122102110123);国家“十二五”科技支撑计划项目(2011BAD17B04);郑州牧专博士基金项目(2012A20)资助

摘　　要：通过田间试验,研究了不同硒肥用量对紫花苜蓿草产量、品质及养分吸收的影响。结果表明:适量施硒可提高紫花苜蓿产量、株高、叶茎比,促进紫花苜蓿生长,以施硒0.45 kg hm-2效果最好。同时施硒提高了紫花苜蓿粗蛋白、粗脂肪、粗灰分含量,降低了粗纤维含量,以施硒量0.45 kg hm-2效果最好,其粗蛋白、粗灰分、粗脂肪含量分别达到16.28%、6.29%和8.56%,比对照增幅分别为18.68%,45.60%和9.88%,粗纤维含量为34.92%,减幅为3.50%。施硒还促进了紫花苜蓿对N、P、K的吸收,以0.45 kg hm-(2S4处理)效果最明显。紫花苜蓿硒含量和吸收量随施硒量的增加而增加,施硒量与植株硒含量和吸收量的相关系数分别为0.977**和0.988**,达极显著正相关。A field experiment was conducted to study the effects of different amounts of selenium fertilizer on alfalfa growth, quality and nutrients absorption. The results showed that appropriate application rates of selenium fertilizer could increase the alfalfa yield, plant height and leaf/steam ratio, and promote alfalfa growth. And 0.45 kg hm-2 of selenium was the most effective and suitable application rate. Applying selenium could increase the content of crude protein, crude fat and crude ash in alfalfa, and decrease the alfalfa crude fiber content, and 0.45 kg hm-2 of selenium was the most effective application rate, where the contents of crude protein, crude fat and crude ash in alfalfa were separately 16.28% ,6.29% and 8.56%, while the content of crud fiber was 34.92%, decreasing by 3.50% compared to CK. Applying selenium could also increase N, P and K absorption amounts, and 0.45 kg hm-2 of selenium was the best. The content and absorption amount of selenium were increased with the increasing Se application rate. The correlation coefficients between applied selenium amount and alfalfa Se content and Se absorption amount were 0.977＊＊ and 0.988＊＊ to significant levels, respectively.

关 键 词：硒 紫花苜蓿 产量 品质 养分吸收 

分 类 号：S551.7[农业科学—作物学]