不同肥料及接种蚯蚓对高速公路建设损毁土壤的短期培肥效应

发布时间：2018-04-05 09:25

本文选题：牛粪　切入点：蚯蚓粪　出处：《江苏农业学报》2017年03期

【摘要】：利用温室盆栽类芦试验,选取21个土壤物理、化学、微生物学和酶活性指标,采用因子分析等方法,对短期内不同肥料及"蚯蚓-有机物料"协同对被高速公路建设损毁的赤红壤的培肥效应进行综合评价。结果表明:养分释放控制因子、养分供应容量因子和养分供应强度因子是影响土壤综合质量的3个主因子,反映了21个土壤指标所提供的90.04%信息量。同等施肥水平,施蚓粪、牛粪比施化肥能显著改善土壤养分释放控制因子,提高土壤养分供应容量,提升土壤综合质量,促进类芦生长,增加类芦生物量;单施化肥仅能显著提高土壤养分供应强度,但由于肥效释放过快抑制了类芦生长,类芦生物量甚至低于对照(P0.05);用因子分析法得到不同处理土壤综合质量的排序为5.0%牛粪5.0%蚓粪5.0%"牛粪+蚯蚓"2.5%蚓粪2.5%牛粪2.5%"牛粪+蚯蚓"5.0%化肥蚯蚓2.5%化肥对照,与系统聚类分析结果和类芦生物量的排序基本吻合。短期内,对于被高速公路建设损毁的土壤,施有机肥是最优的培肥改良方式。利用因子分析对不同土壤培肥改良方式下土壤综合质量进行评价是可行的。
[Abstract]:In this paper, 21 indexes of soil physics, chemistry, microbiology and enzyme activity were selected in greenhouse pot experiment, and the method of factor analysis was used.The effects of different fertilizers and earthworm-organic materials on the fertilization of lateritic red soil damaged by highway construction in a short period of time were evaluated.The results showed that nutrient release control factors, nutrient supply capacity factors and nutrient supply intensity factors were three main factors affecting soil comprehensive quality, reflecting 90.04% of the information provided by 21 soil indexes.At the same fertilization level, the application of earthworm manure and cow manure could significantly improve the control factors of soil nutrient release, increase the capacity of soil nutrient supply, improve the comprehensive quality of soil, promote the growth of Reed and increase the biomass of Reed.The application of chemical fertilizer alone can only significantly increase the soil nutrient supply intensity, but because of the rapid release of fertilizer effect, it can inhibit the growth of the species.The order of soil comprehensive quality of different treatments was 5.0% cattle manure 5.0% earthworm manure 2.5% cow manure 2.5% cow manure 2.5% cow manure 2.5% cow manure 2.5% fertilizer earthworm 2.5% chemical fertilizer and chemical fertilizer control by factor analysis method even lower than that of control P0.050.The order of soil comprehensive quality of different treatments was 5.0% cow manure 5.0% earthworm 2.5% cow manure 2.5% cow manure 2.5% cow manure 2.5% cow manure 2.5% earthworm fertilizer 2.5% chemical fertilizer control.The results are consistent with the results of systematic cluster analysis and the sequencing of the biomass of reeds.In the short term, organic manure is the best way to improve the soil damaged by highway construction.It is feasible to evaluate the comprehensive quality of soil with different methods of soil fertility improvement by factor analysis.
【作者单位】：华南农业大学公共管理学院;农业部耕地保育重点实验室/国土资源部建设用地再开发重点实验室/广东省土地利用与整治重点实验室;华南农业大学资源环境学院;
【基金】：广东省交通运输厅科技项目(科技-2012-02-064)
【分类号】：S158

【相似文献】