ZHAO Zijian,XU Wangwang,GAO Jingxia,et al.Effects of Pepper Continuous Cropping on Soil Nutrients,Enzyme Activities and Microbial Biomass in Arch Shed of Southern Ningxia[J].Northern Horticulture,2024,(16):73-79.[doi:10.11937/bfyy.20240262]
宁南拱棚辣椒连作对土壤养分、酶活性及微生物量的影响
- Title:
- Effects of Pepper Continuous Cropping on Soil Nutrients,Enzyme Activities and Microbial Biomass in Arch Shed of Southern Ningxia
- 文章编号:
- 1001-0009(2024)16-0073-07
- 分类号:
- S 641.3
- 文献标志码:
- A
- 摘要:
- 以“牛角椒巨丰一号”辣椒为试材，针对初始连作年限为1年（一号）、2年（二号）、9年（三号）、11年（四号）的4座拱棚，采用控制变量法，进行持续3年的土壤养分、酶活性以及微生物量测定，研究连作对土壤性状的影响，以期对宁南拱棚辣椒连作障碍的形成机理、消减措施等提供参考依据。结果表明：连作年限对微生量碳氮磷、主要养分指标（有机质、全氮、全磷、速效钾、速效磷、速效氮）及过氧化氢酶、脲酶和蔗糖酶影响显著（P<0.05）。土壤微生物量磷随着连作年限的增加整体呈下降趋势，而微生物量碳氮无明显趋势性变化。随着连作年限的增加，各大棚土壤养分整体均呈上升趋势，其中速效磷的增长最为显著，三号棚增加最多，比采样第1年分别增加了218.41%、523.20%；四号棚中全氮含量随连作年限增加而减少，有机质、全磷、速效钾无显著变化；速效氮随连作年限增加也无明显变化规律。土壤过氧化氢酶随连作年限无明显的变化规律，土壤脲酶在各个大棚均呈现明显的下降趋势，短期连作可以显著提高土壤蔗糖酶活性，但随着连作年限的增加又逐年下降，而土壤碱性磷酸酶短期连作与长期连作下均无明显变化。
- Abstract:
- Taking the ‘Niujiaojiao Jufeng No.1’ pepper as the test material,four arch sheds with initial continuous cropping years of 1 year (No.1),2 years (No.2),9 years (No.3),and 11 years (No.4) were used to measure soil nutrients,enzyme activity,and microbial biomass for 3 years using the controlled variable method.The changes were analyzed to study the impact of continuous cropping on soil properties,in order to provide reference for the formation mechanism and reduction measures of continuous cropping obstacles in southern Ningxia arch sheds for pepper.The results showed that,the continuous cropping years had significant effects on micro-carbon,nitrogen,phosphorus,main nutrient indexes (organic matter,total nitrogen,total phosphorus,available potassium,available phosphorus,available nitrogen) and peroxidase,urease and sucrase (P<0.05).Soil microbial biomass phosphorus decreased with the increase of continuous cropping years,while microbial biomass carbon and nitrogen had no obvious trend.With the increase of continuous cropping years,the soil nutrients in each greenhouse showed an overall upward trend,among which the increase of available phosphorus was the most significant,and the increase of No.3 greenhouse was the most,which increased by 218.41% and 523.20% respectively compared with the first year of sampling.The total nitrogen content in the fourth shed decreased with the increase of continuous cropping years,and there was no significant change in organic matter,total phosphorus and available potassium.There was no significant change in available nitrogen with the increase of continuous cropping years.There was no significant change in soil catalase with continuous cropping years.Soil urease showed a significant downward trend in all greenhouses.Short-term continuous cropping could significantly increase soil sucrase activity,but it decreased year by year with the increasing of continuous cropping years.There was no significant change in soil alkaline phosphatase under short-term continuous cropping and long-term continuous cropping.
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备注/Memo
第一作者简介：赵梓鉴(1998-)，男，硕士研究生，研究方向为退化土壤修复。E-mail：395377780@qq.com.责任作者：张风宝（1980-），男，回族，博士，研究员，现主要从事退化土壤修复等研究工作。E-mail：fbzhang@nwsuaf.edu.cn.基金项目：宁夏回族自治区农业高质量发展和生态保护科技创新示范资助项目(NGSB-2021-8-05)。收稿日期：2024-01-17