Disinfection Byproducts and Their Precursors in Drinking Water Sources:Origins,Influencing Factors,and Environmental Insights

Tracing the contamination origins in water sources and identifying the impacts of natural and human processes are essential for ecological safety and public health.However,current analysis approaches are not ideal,as they tend to be laborious,time-consuming,or technically difficult.Disinfection byproducts(DBPs)are a family of well-known secondary pollutants formed by the reactions of chemical disinfectants with DBP precursors during water disinfection treatment.Since DBP precursors have various origins(e.g.,natural,domestic,industrial,and agricultural sources),and since the formation of DBPs from different precursors in the presence of specific disinfectants is distinctive,we argue that DBPs and DBP precursors can serve as alternative indicators to assess the contamination in water sources and identify pollution origins.After providing a retrospective of the origins of DBPs and DBP precursors,as well as the specific formation patterns of DBPs from different precursors,this article presents an overview of the impacts of various natural and anthropogenic factors on DBPs and DBP precursors in drinking water sources.In practice,the DBPs(i.e.,their concentration and speciation)originally present in source water and the DBP precursors determined using DBP formation potential tests—in which water samples are dosed with a stoichiometric excess of specific disinfectants in order to maximize DBP formation under certain reaction conditions—can be considered as alternative metrics.When jointly used with other water quality parameters(e.g.,dissolved organic carbon,dissolved organic nitrogen,fluorescence,and molecular weight distribution)and specific contaminants of emerging concern(e.g.,certain pharmaceuticals and personal care products),DBPs and DBP precursors in drinking water sources can provide a more comprehensive picture of water pollution for better managing water resources and ensuring human health.

Evaluation of the Impact of Refined Quality Control Management Model on the Qualified Rate of Disinfection and Sterilization of Surgical Instruments in the Sterilization Supply Center

Objective:To evaluate the application value of a refined quality control management model for a sterilization supply center.Methods:A retrospective analysis was conducted on the work situation of the sterilization supply center from January 2021 to January 2023.The work situation before January 31,2022,was classified as the control group;a routine quality control management model was implemented,and the work situation after January 31,2022,was classified as the observation group.The quality of medical device management and department satisfaction between the two groups were compared.Results:The timely recovery and supply rate,classification and cleaning pass rate,disinfection pass rate,packaging pass rate,sterilization pass rate,and department satisfaction score in the observation group were all higher than those of the control group(P<0.05).Conclusion:Implementing a refined quality control management model in the sterilization supply center can improve the quality management level of medical devices and department satisfaction and is worthy of promotion.

Double enzyme mimetic activities of multifunctional Ag nanoparticle-decorated Co_(3)V_(2)O_(8)hollow hexagonal prismatic pencils for application in colorimetric sensors and disinfection

Since the catalytic activity of most nanozymes is still far lower than the corresponding natural enzymes,there is urgent need to discover novel highly efficient enzyme-like materials.In this work,Co_(3)V_(2)O_(8)with hollow hexagonal prismatic pencil structures were prepared as novel artificial enzyme mimics.They were then decorated by photo-depositing Ag nanoparticles(Ag NPs)on the surface to further improve its catalytic activities.The Ag NPs decorated Co_(3)V_(2)O_(8)(ACVPs)showed both excellent oxidase-and peroxidase-like catalytic activities.They can oxidize the colorless 3,3’,5,5’-tetramethylbenzidine rapidly to induce a blue change.The enhanced enzyme mimetic activities can be attributed to the surface plasma resonance(SPR)effect of Ag NPs as well as the synergistic catalytic effect between Ag NPs and Co_(3)V_(2)O_(8),accelerating electron transfer and promoting the catalytic process.ACVPs were applied in constructing a colorimetric sensor,validating the occurrence of the Fenton reaction,and disinfection,presenting favorable catalytic performance.The enzyme-like catalytic mechanism was studied,indicating the chief role of⋅O_(2)-radicals in the catalytic process.This work not only discovers a novel functional material with double enzyme mimetic activity but also provides a new insight into exploiting artificial enzyme mimics with highly efficient catalytic ability.

Efficacy of graphene nanocomposites for air disinfection in dental clinics: A randomized controlled study

BACKGROUND Aerosols containing disease-causing microorganisms are produced during oral diagnosis and treatment can cause secondary contamination.AIM To investigate the use of graphene material for air disinfection in dental clinics by leveraging its adsorption and antibacterial properties.METHODS Patients who received ultrasonic cleaning at our hospital from April 2023 to April 2024.They were randomly assigned to three groups(n=20 each):Graphene nanocomposite material suction group(Group A),ordinary filter suction group(Group B),and no air suction device group(Group C).The air quality and air colony count in the clinic rooms were assessed before,during,and after the procedure.Additionally,bacterial colony counts were obtained from the air outlets of the suction devices and the filter screens in Groups A and B.RESULTS Before ultrasonic cleaning,no significant differences in air quality PM2.5 and colony counts were observed among the three groups.However,significant differences in air quality PM2.5 and colony counts were noted among the three groups during ultrasonic cleaning and after ultrasonic treatment.Additionally,the number of colonies on the exhaust port of the suction device and the surface of the filter were significantly lower in Group A than in Group B(P=0.000 and P=0.000,respectively).CONCLUSION Graphene nanocomposites can effectively sterilize the air in dental clinics by exerting their antimicrobial effects and may be used to reduce secondary pollution.

Curative effect of hydrogen peroxide combined with silver ion disinfection on pelvic floor dysfunction

BACKGROUND Pelvic floor dysfunction(PFD)is related to muscle fiber tearing during childbirth,negatively impacting postpartum quality of life of parturient.Appropriate and effective intervention is necessary to promote PFD recovery.AIM To analyze the use of hydrogen peroxide and silver ion disinfection for vaginal electrodes in conjunction with comprehensive rehabilitation therapy for postpartum women with PFD.METHODS A total of 59 women with PFD who were admitted to the hospital from May 2019 to July 2022 were divided into two groups:Control group(n=27)received comprehensive rehabilitation therapy and observation group(n=32)received intervention with pelvic floor biostimulation feedback instrument in addition to comprehensive rehabilitation therapy.The vaginal electrodes were disinfected with hydrogen peroxide and silver ion before treatment.Intervention for both groups was started 6 weeks postpartum,and rehabilitation lasted for 3 months.Pelvic floor muscle voltage,pelvic floor muscle strength,vaginal muscle voltage,vaginal muscle tone,pelvic floor function,quality of life,and incidence of postpartum PFD were compared between the two groups.RESULTS Before comprehensive rehabilitation treatment,basic data and pelvic floor function were not significantly different between the two groups.After treatment,the observation group showed significant improvements in the maximum voltage and average voltage of pelvic floor muscles,contraction time of type I and type II fibers,pelvic floor muscle strength,vaginal muscle tone,vaginal muscle voltage,and quality of life(GQOLI-74 reports),compared with the control group.The observation group had lower scores on the pelvic floor distress inventory(PFDI-20)and a lower incidence of postpartum PFD,indicating the effectiveness of the pelvic floor biostimulation feedback instrument in promoting the recovery of maternal pelvic floor function.CONCLUSION The combination of the pelvic floor biostimulation feedback instrument and comprehensive rehabilitation nursing can improve pelvic floor muscle strength,promote the recovery of vaginal muscle tone,and improve pelvic floor function and quality of life.The use of hydrogen peroxide and silver ion disinfectant demonstrated favorable antibacterial efficacy and is worthy of clinical application.

Performance Parameters:Demobilization Antibiotic Resistant Bacteria(ARB)and Carrying Genes(ARG)in Wastewater Disinfection

The UV irradiation is used for removing Antibiotic Resistant Bacteria(ARB)and Antibiotic Resistance Genes(ARG)from wastewater treatment.Bacteriophages are viruses that infect within bacteria,are recognized for bacterial control.The influence of some parameters in quantification and performance influencing of pathogen demobilization could be considered in disinfection of wastewater.The comparison of Polyvalent phage(NE1)versus Coliphage(NE4)in suppressing a bacterium Escherichia coli(NDM-1:b-lactam-resistant)with UV irradiation was observed the efficacy in reduction of cells in the disinfection and parameter process.The results with the effect of UV-C irradiation on NDM-1 infected with 1%of NE4 showed a decrease of cells from 8×10^(6)to 2×10^(5)in 60 min with UV-C dose.The NDM1(E.coli)was infected with 1%of NE4(Polyvalent Phage)under magnetic stirring for 1 h,the cells count was 8×10^(6).After 1 h in UV-C e×posure,the cells number reached 3×10^(5).The NDM1 that was e×posed in 1 h of UV-C irradiation and then was infected with 1%of NE4.Cells counting were done 24 h after this procedure.These cells were e×posed in UV-C and showed a reduction in the number of cells from 1×10^(8)to 4×10^(5)after 60 min.The results indicate that bacteriophages can mitigate bacteria species,and combined the conventional water disinfection technologies that can support the microbial safety control strategies.

Progress in Analytical Methods of Halogenated Disinfection By-Products

Ensuring the health and safety of drinking water is crucial for both nations and their citizens.Since the 20th century,the disinfection of drinking water,effectively controlling pathogens in water sources,has become one of the significant advances in public health.However,the disinfectants used in the process,such as chlorine and chlorine dioxide,react with natural organic matter in the water to produce disinfection by-products(DBPs).Most of these DBPs contain chlorine,and if the source water contains bromine or iodine,brominated or iodinated DBPs,collectively referred to as Halogenated disinfection byproducts(X-DBPs),are formed.Numerous studies have found that X-DBPs pose potential risks to human health and the environment,leading to widespread concern.Mass spectrometry has become an important means of discovering new types of X-DBPs.This paper focuses on the study of methods for analyzing X-DBPs in drinking water using mass spectrometry.

Solar photocatalytic pathogenic disinfection:Fundamentals to state-of-the-art

It is necessary to treat pathogen-infected water before its utilisation.Of conventionally used treatment methods,solar photocatalysis has gained considerable momentum owing to its operational simplicity and capacity to use freely and abundantly available solar energy.This article systematically reviewed the disinfection of water with photocatalysis.It addressed the concerns of microbial infection of water and the fundamentals behind its treatment with photocatalysis.It presented an in-depth description of pathogenic deactivation with powerful reactive oxygen species.Special emphasis was given to process intensification as it is an attractive technique that provides multifunctionality and/or equipment miniaturisation.Solar reactor design regarding mobilised/immobilised photocatalysts and compound parabolic concentrators were elucidated.Finally,key parameters governing photoperformance,corresponding trade-offs,and the need for their optimisation were discussed.Overall,this article is a single point of reference for researchers,environmentalists,and industrialists who address the ever-severing challenge of providing clean water whilst also maintaining energy sustainability.

Effectiveness of Disinfection in Bacteriology Laboratories in Togo, 2021

Background: Laboratory personnel is at risk of biological contamination leading to laboratory-acquired infections (LAIs). The use of disinfection products is essential in the prevention of these infections. This work aimed to evaluate the effectiveness of antimicrobial agents used in disinfection in bacteriology laboratories in Togo. Methods: This was a cross-sectional study conducted from June to December 2021 in all bacteriology laboratories in Togo. Swabs taken before and after disinfection of surfaces and staff hands were immediately plated on agar media. Counting and identification of isolated colonies were done after 24 hours of incubation. The ANOVA test was used to compare calculated means, prevalence ratio (PR) and 95% confidence intervals (CI) to compare bacterial frequencies. Results: A total of 393 samples were taken, of which 41.2% were from hands. Before disinfection, surfaces were more contaminated than hands with respectively 40.4% and 29.6% (PR = 1.3;CI 95% = [0.9 - 1.9]). After surface disinfection with 0.5% of chlorine solution, bacterial elimination was total, but partial on hands washed with soap, with residual contamination of 3.7%. A total of 108 strains were isolated before disinfection of which Klebsiella spp. 38.9% and Staphylococcus spp. 25.0%;after disinfection 4 strains were isolated of which: Staphylococcus spp. 75.0% and Klebsiella spp. 25.0%. Conclusion: Surface disinfection was more effective than hand washing with soap and water. We recommend proper hand washing.

Prevalence and Disinfection of Bacteria Associated with Various Types of Wristbands

The potential role of personal items in the transmission of pathogens is poorly understood. In this study, we cultured bacteria of public health importance found on wristbands, determined whether there is a correlation between wristband material and prevalence, and tested three household disinfectants for efficacy in reducing bacteria on wristbands made of plastic, rubber, metal, and cloth, using standard microbiological assays. Total cultivable bacteria, Staphylococci, Enterobacteria (Escherichia coli), and Pseudomonas on 20 smartwatch wristbands were cultured from randomly recruited subjects. Nearly all wristbands (95%) were contaminated, with the highest average numbers of 3.46E+4 cfu/cm2 and 1.52E+4 cfu/cm2 on rubber and plastic bands respectively. Metallic gold and silver wristbands had zero to 18 cfu/cm2. While the high prevalence of Staphylococcus spp (85% of wristbands)—skin microbiota;was not unexpected, the occurrence of Pseudomonas spp (30%), and enteric bacteria (60%), even at relatively low numbers is of public health significance. Bacterial load on individual subjects varied remarkably with males and females harboring average total bacteria of 4.045 and 3.42 log10cfu/cm2 of wristband, respectively. The most important predictor of wristband bacteria load was the texture of wristband material and activity (hygiene) of the subject at sampling time. Potential pathogens—Staphylococcus aureus (8143 cfu/cm2) and Pseudomonas spp. (1126 cfu/cm2) were most abundant on cloth and rubber wristbands, respectively, while the presence of the E. coli group was associated with animal handling activity by a veterinarian. Lysol Disinfectant Spray and 70% Ethanol were highly effective regardless of wristband material with >99.99% kill rate and a log cfu/cm2 reduction of 3 - 4.0 and 3 - 4.5 respectively within 30 seconds. Apple Cider Vinegar (ACV) was not as potent. Only 2 - 3.5 log cfu/cm2 drop was obtained after 120 seconds of exposure. Further susceptibility assays with standard reference bacteria showed that Lysol and 70% alcohol effectively killed > 99.99% (>8 log CFU drop) of Escherichia coli strain 7001, Staphylococcus aureus strain 6538, and Pseudomonas aeruginosa strain 10662 within 30 seconds of contact. Vinegar had a similar efficacy on the gram negatives but little or no effect on Staph aureus (only a 2-log CFU/ml reduction in 5 minutes!) The high prevalence of potential pathogens, some of which could be reservoirs of antibiotic resistance reveals a weak link in infection control and underscores the need for regular cleaning of personal and hand-held accessories with adequate considerations of their texture.

The Application Value of Sanitary Wipes and Medical Alcohol+Gauze Disinfection Method in the Management and Use of Medical Equipment

Objective:To analyze the effect of sanitary wipes and medical alcohol+gauze disinfection methods on the management and use of medical equipment in hospitals.Methods:From February 2023 to August 2023,80 anorectal surgery medical instruments and equipment were randomly sampled as observation samples,and they were grouped using the random number table method(40 instruments in each group).One group was managed with sanitary wipes and medical alcohol+gauze disinfection method(observation group),and the other group was managed with medical alcohol+gauze disinfection method(control group).The degree of contamination on the surface of instruments and equipment and the staff satisfaction of both groups was noted and compared.Results:After cleaning and disinfection,the relative luminescence luminosity(RLU)value of the surface contamination of the sample instruments and equipment decreased significantly(P<0.05);and after cleaning and disinfection,the relative luminescence luminosity(RLU)of the observation group’s instruments and equipment decreased significantly,and the value was lower than that of the control group,(P<0.05);the results of the nursing job satisfaction questionnaire showed that the scores of each survey item in the observation group were higher than those in the control group,(P<0.05).Conclusion:Integrating sanitary wipes and medical alcohol+gauze disinfection method into the management and use of medical equipment not only improves the disinfection of medical instruments but also improves the job satisfaction of nursing staff.Therefore,this method should be popularized.

全国71所医疗机构新生儿皮肤消毒剂使用的现况调查

目的 了解全国新生儿护理单元皮肤消毒剂的使用情况。方法 采用便利抽样的方法,于2023年4—5月采用自行设计的调查表调查全国93个新生儿护理单元皮肤消毒剂的使用情况,内容包括消毒剂类型、消毒工具、清洁与消毒次数、消毒剂待干情况、脱消毒剂情况和消毒剂引起的不良反应。结果 共纳入25个省/直辖市71所医疗机构的93个护理单元。新生儿病房中,使用最多的3种消毒剂分别是乙醇(79.57%)、碘伏(74.19%)、安尔碘(62.37%),氯己定在护理单元(<2个月龄婴儿)中的使用情况分别为禁用28个(30.11%),慎用23个(24.73%),可用9个(9.68%),无统一要求33个(35.48%)。13个(17.57%)护理单元使用乙醇时仅擦拭1次,部分护理单元对消毒剂擦拭次数未做统一规定。使用碘伏后,去除残留消毒剂情况,包括29个(42.03%)护理单元使用生理盐水,8个(11.59%)使用乙醇,19个(27.54%)未做统一规定。消毒剂的不良反应主要为皮疹、接触性皮炎,引起不良反应的消毒剂有乙醇、碘伏、安尔碘及氯己定。结论 临床实践中,新生儿皮肤消毒剂使用尚缺乏统一规范,选择和使用差异性较大。新生儿皮肤消毒剂存在较普遍的不良反应。应加强医护人员消毒剂使用规范的培训,并开展大规模严谨的随机对照试验设计,为正确选用消毒剂提供科学依据。

两种方法清洗消毒达芬奇机器人手术臂的效果比较

目的探讨达芬奇机器人手术臂有效的清洗消毒方法。方法回顾性分析2022年1月至2023年4月江西省人民医院手术室使用后的达芬奇机器人手术臂200件达芬奇机器人手术臂作为研究对象,按照不同的操作流程将其分为观察组(100件)与对照组(100件)。观察组采用流动水冲洗+腹腔镜酶剂浸泡+超声波清洗机超声+蒸汽清洗机清洗手术臂操作端+高压水枪纯水漂洗+全自动清洗机清洗消毒。对照组清洗消毒流程为流动水冲洗+腹腔镜酶剂浸泡+超声波清洗机超声+刷洗手术臂操作端+高压水枪纯水漂洗+全自动清洗机清洗消毒。采用目测检查法(四倍带光源放大镜)、腺苷三磷酸(ATP)生物荧光快速检测法进行检测,计算清洗质量不合格的返洗率,比较两组的清洗消毒操作平均耗时。结果观察组的目测检查法返洗率低于对照组,观察组的ATP生物荧光检测返洗率低于对照组,差异有统计学意义(P<0.05)。观察组清洗消毒平均耗时短于对照组,差异有统计学意义(P<0.05)。结论蒸汽清洗机清洗消毒达芬奇机器人手术臂效果比手工刷洗清洗消毒效果更为理想,可节约大量清洗消毒时间,有效节约稀有医疗资源。

大蒜素有效成分DATS对粪肠球菌抑制作用的体外研究

目的:观察大蒜素有效成分二烯丙基化三硫(DATS)对感染根管粪肠球菌生物膜的作用。方法:选取60颗健康单根管恒牙,45颗建立粪肠球菌感染根管模型。分为4组(n=15):阴性对照组(未感染组)、DATS组、氢氧化钙组和阳性对照(无抗菌处理)组。二倍稀释法测定DATS对粪肠球菌的最小抑菌浓度(MIC)和最小杀菌浓度(MBC)。分别于实验第1天、第3天和第7天,取根管内层牙本质粉末,置于2 mL BHI中培养72 h,电子比浊仪读取肉汤上层液体浊度。使用SPSS 26.0统计软件进行数据分析。结果:DATS对粪肠球菌的MIC和MBC(μg/mL)分别为2 560和5 120。第1天,DATS组、氢氧化钙组、阳性对照组与阴性对照组浑浊度,DATS组小于氢氧化钙组(P<0.05);第3天时,DATS组与阴性对照组浑浊度无统计学差别(P=0.454),已基本杀灭细菌;第7天时,氢氧化钙糊剂组与阴性对照组有统计学差别(P<0.05),不能完全杀灭细菌。各时间点阳性对照组浑浊度最高。结论:DATS能够有效杀灭或抑制感染根管中的粪肠球菌。

卤代苯醌类消毒副产物的毒理学研究进展

卤代苯醌(halobenzoquinones,HBQs)是近年来在水体中发现的一类具有潜在毒理学效应且未受管控的新型消毒副产物(disinfection by-products,DBPs).本文综述了HBQs的化学特征与生成机制、环境中的分布情况,并对其引起的细胞毒性、氧化应激毒性、遗传毒性、生物毒性进行了概述.这些内容旨在为深入探讨HBQs的毒理学机制和全面评估其暴露所可能导致的健康风险及癌症风险提供科学依据.

信息化质量追溯系统在消毒供应中心医疗器械管理中的应用效果

目的:探讨信息化质量追溯系统在消毒供应中心(CSSD)医疗器械管理中的应用效果。方法:选取郑州儿童医院CSSD采取常规管理期间(2020年6月至2021年6月)接收的1018件器械为对照组,选取应用信息化质量追溯系统管理后(2021年7月至2022年7月)接收的1018件器械为观察组。比较两组医疗器械管理质量(清洗、灭菌、包装不合格率)及各科室医护人员对CSSD的满意度。结果:观察组医疗器械清洗、包装、灭菌不合格率均低于对照组,差异有统计学意义(P<0.05);各科室医护人员对观察组服务态度、技术水平、器械供应及时性、器械结构功能、器械无菌性等方面的满意度均高于对照组,差异有统计学意义(P<0.05)。结论:信息化质量追溯系统用于CSSD医疗器械管理可提高管理质量,降低医疗器械清洗、包装、灭菌不合格率,提高各科室医护人员满意度,有效保障医疗安全。

质量敏感指标联合阶段递进式护理应用于消毒供应室对器械合格及院内感染的影响

目的 对于消毒供应室采取质量敏感指标联合阶段递进式护理后对器械合格及院内感染的影响进行分析。方法 消毒供应室2022年度采取常规护理模式(对照组),2023年度采取质量敏感指标联合阶段递进式护理(研究组)。分别在每个年度随机选出4300件器械(器械包共计100包),对比合格率(回收、清洗、消毒灭菌、包装、发放)。在年度收治使用器械的患者中各选取100例,对比院内感染率。以消毒供应室工作人员为研究对象(10名),比较护理质量。比较对护理的满意度。结果 研究组回收、清洗、消毒灭菌、包装、发放合格率均比对照组更高(P <0.05)。研究组院内感染率比对照组低,但无明显差异(P> 0.05)。研究组比对照组护理质量好(P <0.05)。护理满意度两组更高的是研究组(P <0.05)。结论 消毒供应室采取质量敏感指标联合阶段递进式护理可以提高器械合格率,预防院内感染,护理质量提高,满意度高。

84消毒液对多头月季“折射”瓶插保鲜效果的影响

以多头月季“折射”为试验材料,采用不同浓度的84消毒液分别加入0.1 g/L蔗糖作为瓶插液,从瓶插寿命、观赏价值、花径变化率、切花鲜重变化率、水分平衡值等方面研究其对多头月季的瓶插保鲜效果。结果表明,与对照相比,除0.2 ml/L 84消毒液+0.1g/L蔗糖外,0.4 ml/L、0.6 ml/L、0.8 ml/L的84消毒液分别加入0.1g/L蔗糖均能有效延长多头月季“折射”的瓶插寿命、提高其观赏价值,取得较好的保鲜效果。其中,0.6ml/L 84消毒液+1%蔗糖的瓶插液处理多头月季“折射”的瓶插寿命比对照延长了3.4 d,综合保鲜效果最好。

根因分析法3C护理对消毒供应中心护理质控成效的影响

目的探讨消毒供应中心在开展护理管理过程中运用根因分析法3C护理模式对降低护理缺陷事件发生率以及质控成效的影响。方法福建省立医院消毒供应中心2022年6月1日开始运用根因分析法进行3C护理,分析实施前后各1年(2021年6月—2023年6月)消毒供应中心护理管理工作质量。结果评估实施前后各护理管理质量,实施后环境管理(93.01±3.11)分、安全管理(94.15±1.86)分、物品管理(92.11±1.86)分、检查管理(93.46±1.58)分,均明显高于管理前的(82.14±2.34)分、(81.45±1.86)分、(83.45±1.45)分、(80.05±2.34)分(P<0.05)。随机抽选两观察时间段患者500例,实施后护理缺陷事件发生率为0.20%,低于实施前的5.00%(P<0.05)。实施后院内感染率为1.00%,低于实施前的9.40%(P<0.05)。实施后对消毒供应中心护理工作满意度为98.00%,高于实施前的92.00%(P<0.05)。结论消毒供应中心在开展日常护理管理过程中将根因分析法3C护理进行运用,可以降低护理缺陷事件发生率,提升质量控制效果,对于提升消毒供应中心护理工作质量有重要作用。

盘锦市夏季高温闷棚土壤消毒技术

通过盘锦市部分农户反映问题和长期生产调研,发现盘锦市部分农户种植的温室内由于长期连作及不科学的病虫害防治方式,导致温室内病虫害极为严重,尽管当地农户采用多种防治手段,温室内病虫害始终难以根除。为解决这一生产难题,2022—2023年辽宁省农业科学院蔬菜研究所与当地农户对接,在盘锦市菜根堂培训基地农户种植的温室内进行了夏季高温闷棚土壤消毒试验。为加强防治效果,试验增加了不同剂量的石灰氮和98%棉隆颗粒进行了不同组合处理。结果显示,35 g/m^(2)98%棉隆颗粒+135 g/m^(2)石灰氮高温闷棚土壤消毒效果最好,但35 g/m^(2)98%棉隆颗粒+105 g/m^(2)石灰氮高温闷棚土壤消毒防治效果和成本投入最易为农户接受。