生物菌肥下小麦苗期生长及土壤微生物的特征
The characteristics of wheat seeding growth and soil microorganisms under biological bacterial fertilizer
孙萌 1宁松瑞 2颜安 1杨利 1卢前成 1左筱筱 1李靖言 3范君1
作者信息
- 1. 新疆农业大学,资源与环境学院,乌鲁木齐 830052
- 2. 西安理工大学/省部共建西北旱区生态水利国家重点实验室,西安 710048
- 3. 新疆农业大学 计算机与信息工程学院,乌鲁木齐 830052
- 折叠
摘要
为了探究不同生物菌肥对小麦生长、土壤肥力及微生物数量的影响,采用盆栽试验,以小麦(Triticum aestivum L.)为试验对象,不施肥为对照(CK),设置水溶性盐碱地复合菌(A)、不溶性盐碱地复合菌(B)、枯草芽孢杆菌(C)、解淀粉芽孢杆菌(D)4种生物菌肥及3个施用量梯度,并测定小麦苗期生长指标、土壤理化性质及土壤微生物数量.结果表明,施用4种生物菌肥处理的小麦苗期株高、叶绿素SPAD及地上部干物质质量均高于CK,且各处理小麦苗期生长指标随着生物菌肥用量的增加而提高;施用4种生物菌肥处理的土壤有机质、全量养分(全氮、全磷、全钾)和速效养分(碱解氮、速效磷、速效钾)含量均高于CK;各生物菌肥处理盆栽小麦土壤可培养细菌数量和放线菌数量均高于CK,而真菌数量均低于CK.通过主成分分析可知,枯草芽孢杆菌在施用量为0.80 g/kg时对土壤的改善效果最佳.
Abstract
To explore the effects of different biological bacterial fertilizers on wheat growth,soil nutrients and microbial quantity,a pot experiment was conducted with wheat(Triticum aestivum L.)as the test object and no fertilizer as the CK control.Four kinds of bio-logical bacterial fertilizers including water-soluble saline-alkali soil composite bacteria(A),insoluble saline-alkali soil composite bacteria(B),Bacillus subtilis(C),Bacillus amyloliquefaciens(D)and three application gradients were set up.The growth index of wheat seedings,physical and chemical properties and microorganisms quantity of soil were determined.The result showed that the plant height,chlorophyll SPAD and aboveground dry matter of wheat seedings treated with four kinds of biological bacterial fertilizers A,B,C and D were higher than those of CK,and these growth indexes of wheat seedlings in each treatment increased with the in-crease of the amount of biological bacterial fertilizers.The contents of soil organic matter,total nutrients(total nitrogen,total phospho-rus and total potassium)and available nutrients(alkali-hydrolyzable nitrogen,available phosphorus and available potassium)of wheat treated with four kinds of biological bacterial fertilizers were higher than those of CK.The number of culturable bacteria and acti-nomycetes in the soil of potted wheat treated with each biological bacterial fertilizer was higher than that of CK,while the number of fungi was lower than that of CK.Through principal component analysis,Bacillus subtilis(C)had the best effect on improving soil when the application amount was 0.80 g/kg.
关键词
生物菌肥/小麦(Triticum/aestivum/L.)/苗期生长/土壤养分/土壤微生物/主成分分析Key words
biological bacterial fertilizer/wheat(Triticum aestivum L.)/seedling growth/soil nutrient/soil microorganism/principal component analysis引用本文复制引用
基金项目
新疆维吾尔自治区重点研发任务专项(2022B02003)
出版年
2024
NETL
NSTL
万方数据