摘要
为了研究富硒土壤施用特贝钙土壤调理剂对黑麦草产量和硒含量的影响,试验采用单因素随机区组田间小区试验方法,根据特贝钙土壤调理剂的不同施用量设5个处理,即CK(0)、T_(1)(750 kg/hm^(2))、T_(2)(1 500 kg/hm^(2))、T_(3)(2 250 kg/hm^(2))和T_(4)(3 000 kg/hm^(2)),每个处理3次重复。黑麦草分别在播种60 d、90 d、120 d后刈割,测定干草产量、硒含量和砷、铅、汞、镉、铬等重金属含量,并运用Pearson积距相关系数对黑麦草中硒含量与重金属含量进行相关性分析。结果表明:施肥处理T_(1)、T_(2)、T_(3)、T_(4)的黑麦草干草产量分别为10 205.86 kg/hm^(2)、9 581.72 kg/hm^(2)、9 682.35 kg/hm^(2)和9 315.12 kg/hm^(2),分别比CK(8 908.81 kg/hm^(2))提高了14.56%(P<0.05)、7.55%(P>0.05)、8.68%(P>0.05)和4.56%(P>0.05);施肥处理T_(1)、T_(2)、T_(3)、T_(4)的黑麦草中的硒含量分别为0.046 mg/kg、0.050 mg/kg、0.045 mg/kg、0.040 mg/kg,分别比CK(0.033 mg/kg)提高了39.39%(P>0.05)、51.52%(P<0.05)、36.36%(P>0.05)和21.21%(P>0.05),其中施肥处理T;在提高黑麦草中的硒含量方面效果最好;不同处理黑麦草中的砷、铅、汞、镉和铬含量均低于《饲料卫生标准》(GB 13078—2017)规定的参考值,且均差异不显著(P>0.05);黑麦草中的硒含量与砷、铅、汞、镉和铬等重金属含量相关性不显著(P>0.05)。说明富硒土壤施用适量特贝钙土壤调理剂可提高黑麦草产量及硒含量,施用量以1 500 kg/hm^(2)为宜。
In order to study the effects of Tebeigai soil conditioner on the yield and selenium content of ryegrass(Lolium perenne L.) in selenium-rich soil, a single-factor randomized block field plot experiment was conducted. Five treatments were set according to different application amounts of Tebeigai soil conditioner: CK(0), T_(1)(750 kg/hm^(2)), T_(2)(1 500 kg/hm^(2)), T_(3)(2 250 kg/hm^(2)) and T_(4)(3 000 kg/hm^(2)). Each treatment was repeated three times. At 60, 90 and 120 days after sowing, ryegrass was mowed to determine hay yield, selenium content, and some heavy metal content(arsenic, lead, mercury, cadmium, chromium). Correlation analysis of selenium and heavy metal contents in ryegrass was carried out by Pearson product distance correlation coefficient. The results showed that: the hay yield of ryegrass in T;, T;, T;and T;were 10 205.86 kg/hm^(2), 9 581.72 kg/hm^(2), 9 682.35 kg/hm^(2)and 9 315.12 kg/hm^(2), respectively. Compared with CK(8 908.81 kg/hm^(2)), they were increased by 14.56%(P<0.05), 7.55%(P > 0.05), 8.68%(P>0.05) and 4.56%(P>0.05), respectively. The selenium content of ryegrass plants at T;, T;, T;and T;were 0.046 mg/kg, 0.050 mg/kg, 0.045 mg/kg and 0.040 mg/kg, respectively. Compared with CK(0.033 mg/kg), they were increased by 39.39%(P>0.05), 51.52%(P<0.05), 36.36%(P>0.05) and 21.21%(P>0.05), respectively. Among them, fertilization T;had the best effect on improving selenium content of ryegrass. The contents of arsenic, lead, mercury, cadmium and chromium in ryegrass of different treatments were all lower than the reference values(Feed Health Standard [GB 13078—2017]), and the differences were not significant(P>0.05). There was no significant correlation between selenium and the contents of arsenic, lead, mercury, cadmium and chromium of ryegrass(P>0.05). The results indicated that the yield and selenium content of ryegrass could be increased by applying proper amount of soil conditioner Tebeigai in selenium-rich soil, and the appropriate application amount was 1 500 kg/hm^(2).
作者
冯德庆
黄秀声
黄小云
王俊宏
韩海东
陈钟佃
罗涛
FENG Deqing;HUANG Xiusheng;HUANG Xiaoyun;WANG Junhong;HAN Haidong;CHEN Zhongdian;LUO Tao(Fujian Province Engineering and Technology Research Center for Recycling Agriculture in Hilly,Agricultural Ecology Institute,Fujian Academy of Agricultural Sciences,Fuzhou 350013,China)
出处
《黑龙江畜牧兽医》
CAS
北大核心
2022年第2期102-106,共5页
Heilongjiang Animal Science And veterinary Medicine
基金
福建省属公益类科研院所专项(2021R1021006
2020R1021002)
福建省人民政府-中国农业科学院“5511”协同创新工程项目(XTCXGC2021010)
国家重点研发计划项目(2017YFD0502105)。
关键词
富硒土壤
硒
土壤调理剂
黑麦草
重金属
selenium-enriched soil
selenium
soil conditioner
ryegrass
heavy metals
