摘要
“太平二号”蚯蚓食性复杂,喜食畜禽粪便,能够降低畜禽粪污对环境的污染,同时,蚯蚓对硒也有很强的富集作用。该试验在半发酵牛粪中添加不同比例亚硒酸钠(sodium selenite,SS)与富硒酵母(selenium-enriched yeast,SY)的混合硒(10 mg·kg-1,SS∶SY=1∶1,1∶2,1∶4)养殖蚯蚓,探究硒元素对蚯蚓生长繁殖和蚯蚓粪肥力(N、P、K)的影响,选择富硒蚯蚓的适合养殖浓度及复合硒比例,在蚯蚓处理牛粪的同时提升蚯蚓富硒效果。结果表明:(1)与对照组相比,在牛粪基料中添加硒元素,蚯蚓的日增殖倍数与日增重倍数较低(P<0.01),试验组中以SS组生长繁殖较好;(2)试验组蚯蚓蚓体硒含量均显著高于对照组(P<0.05),在试验组中,SY组蚓体硒含量显著高于SS组(P<0.05);(3)SY组与混合Ⅲ组(SS∶SY=1∶4)蚓粪中N含量最高,混合Ⅰ与混合Ⅲ组蚓粪的P含量最高,混合Ⅲ组蚓粪中K含量最高;(4)各试验组蚓粪硒含量显著高于对照组(P<0.05),试验组中以混合Ⅰ组蚓粪硒含量最高,SS组蚓粪硒含量最低。因此,牛粪中添加硒源对蚯蚓的生长繁殖有抑制作用,蚯蚓粪的肥力显著提升,亚硒酸钠与富硒酵母混合比为1∶1时蚯蚓富硒效果最好。
The Taiping 2 earthworm has a complex diet and likes to eat animal manure,which can reduce the environmental pollution caused by animal manure.At the same time,it also can greatly enrich selenium.In this experiment,the semi-fermented cattle manure adding a mixture of selenium(10 mg/kg,SS∶SY=1∶1/1∶2/1∶4)with different proportions of Sodium selenite(Sodium selenite,SS)and Selenium-enriched yeast(Selenium-enriched yeast,SY)was used to breed earthworms so as to study the effect of selenium on earthworms reproductivity and earthworm manure fertility(N,P,K content),and to select the breeding concentration of Se-enriched earthworms and compound selenium proportion,so as to improve the earthworm selenium enrichment effect while it treating the cow dung.The results showed that:(1)The daily multiplication and daily gain of earthworm were lower than those of the control group(P<0.01)when selenium was added to the cow manure base material,and the growth and reproduction of the SS group were best in the experimental group;(2)The selenium contents of earthworm in test groups were significantly higher than that in control group(P<0.05).In test groups,the selenium content of earthworm in SY group was significantly higher than that in SS group(P<0.05).(3)The content of N in vermicompost of SY and Mixed Ⅲ(SS∶SY=1∶4)were the highest,so was P in Mixed Ⅰ and Mixed Ⅲ,andf K in Mixed Ⅲ.(4)The content of selenium in test groups was significantly higher than that of the control group(P<0.05).The content of selenium in vermicompost of the mixedⅠgroup was the highest,and that of the SS group was the lowest.Therefore,the growth and reproduction of earthworms are inhibited by adding selenium source into cow dung,and the fertility of vermicompost is significantly increased.When the ratio of sodium selenite and selenium-enriched yeast is 1∶1,the effect of selenium-enriched earthworms is the best.
作者
张佐忠
刘念
要利仙
苏布登格日勒
朱存良
赵英
张玉
ZHANG Zuozhong;LIU Nian;YAO Lixian;Subudenggerile;ZHU Cunliang;ZHAO Ying;ZHANG Yu(Inner Mongolia Agriculture University,Hohhot,Inner Mongolia 010018,China;Inner Mongolia Fengzhen Feiyu Breeding Co.,Ltd,Fengzhen,Inner Mongolia 012100,China;Inner Mongolia Jungar Banner Dalu Town People's Government,Xuejiawan,Inner Mongolia 103993,China;Inner Mongolia Agricultural and livestock Product Quality and Safety Center,Hohhot,Inner Mongolia 010010,China)
出处
《家畜生态学报》
北大核心
2023年第4期82-86,共5页
Journal of Domestic Animal Ecology
基金
内蒙古“草原英才”创新人才团队项目(内组通字[2018]19号)
内蒙古自治区2018年科技重大专项(内财科[2018]1351号)。
关键词
蚯蚓
硒
蚯蚓粪
牛粪
earthworm
selenium
earthworm feces
cow dung
