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有机栽培基质的研究现状与展望 总被引:5,自引:1,他引:4
对有机栽培基质的材料、基质的养分配方,不同基质配方对作物育苗、生长发育及作物产量品质的影响、基质的消毒等研究现状进行了概述。提出了有机栽培基质存在着关键技术不达标、易二次污染和缺少专用栽培基质等问题,展望了有机基质栽培的发展趋势。 相似文献
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过硫酸氢钾复合粉消毒作用试验研究 总被引:2,自引:0,他引:2
采用纸片琼脂扩散、定量和定性的杀菌试验方法,对过硫酸氢钾复合粉的消毒效果进行研究。结果显示,0.125%-1%的过硫酸氢钾复合粉消毒剂对大肠杆菌8099、金黄色葡萄球菌ATCC6538、多杀性巴氏杆菌C48-1、链球菌C55100均有抑菌作用,对前三种菌的最低杀菌浓度为0.25%,对链球菌C55100的最低杀菌浓度为0.125%。对受试菌作用10 min,杀菌率均为100%;作用5 min,杀菌率也可达到99.9%以上,符合杀菌率要求。 相似文献
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Anette Amtmann Ibrahim Ahmed Petra Zahner-Rimmel Adam Mletzko Lisa Katharina Jordan Martin Oberle Helmut Wedekind Jürgen Christian Sven Michael Bergmann Anna Maria Becker 《Journal of fish diseases》2020,43(2):185-195
In a search for alternative, environmentally friendly and effective disinfecting agents, a commercially available protease—Neutrase®—was tested in this work for inactivation of koi herpesvirus (KHV) and of viral haemorrhagic septicaemia virus (VHSV). For comparison, the stability of these viral pathogens in similar configurations at various pH values and concentrations of peracetic acid or quicklime, typically used for disinfection, was tested. Therefore, virus suspensions were incubated with various concentrations of different agents for 24 hr and the titre of the remaining infectious particles was determined by virus titration. Furthermore, the treatment of both viruses, with the agents at concentrations that were previously appointed as effective, was also examined in the presence of solid material (quartz sand). All procedures investigated in this study, including the protease treatment, were able to reduce the titre of KHV and VHSV below the detection limit of the titration. Although further studies are necessary, this is the first report of the application of a protease for the inactivation of the selected fish pathogens, demonstrating the great potential of the latter for disinfection. 相似文献
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白莲腐败病的防治,采用白莲与泽泻轮作,防效很高;与水稻轮作,一般可以减轻发病,防效较好;与旱作物轮作,发病较重;白莲连作,一般宜2 ̄3年,4年以上发病重。莲田冬季浸水,具有好的防效,可以控制病菌的越冬和厚垣孢子的形成。合理施肥避免过量施用含氮化肥,施用复合和农家有机肥,具有较好的防病效果。采用无病种藉,种藉消毒,杜绝种藉上的菌源。栽后,植株生长3 ̄4片立叶时,挖除老种藕并销毁,防止带菌老种藉进入土 相似文献
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本试验从病毒的致病力,蚕的感染抵抗性,蚕饲育技术三方面对家蚕核型多角体病发生较多的原因进行了研究与分析。认为多发的根本原因在于蚕室蚕具消毒不彻底、忽视地面消毒和地面用药的不当。该病之所以在中秋蚕期多发一与病毒的数量积累有关,二与所用蚕品种在中秋蚕期对该病的感染抵抗性降低有关。 相似文献
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对超甜玉米鲜果穗采用速冻保鲜冷藏(-18℃),其保鲜期可达6个月以上;采用低温(2~6℃)条件贮存,其保鲜期可达10天以上;采用真空包装经高温高压杀菌消毒(125℃,0.14Mpa,10min),常温下可保存6~12个月。超甜玉米粒宜采用速冻方式进行贮存,鲜榨超甜玉米汁加入适量柠檬汁、菠萝汁等调配,即可冷、热饮用。 相似文献