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园林花卉真菌病害研究之二(国家自然科学基金资助项目) 总被引:1,自引:0,他引:1
本文报道昆明等地的14种园林植物上18种真菌病害的症状、病原菌、发病期与分布,其中国内新记录1种,省内新记录15种。 相似文献
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对山东省7个小麦主要产区的小麦煤污病样品进行了分离培养,共获得1458个分离物,经鉴定分属11属14种真菌。其中属于煤污菌范畴的有5属8种:链格孢(Alternariaalternata),枝状枝孢(Cladosporium clodosporioides),尖孢枝孢(C.oxysporrium),草本枝孢(C.herbarum),球孢枝孢(C.sphaerosporum),出芽短梗霉(Auroeobasidium pullulans),黑附球菌(Epicoceum nigrum)和葡柄霉菌(Stemphylium botryosum)。各地的优势种群均为 Alternariaalternata 和 Cladosporium spp.两者的分离频率之和均在60%以上,但枝孢属中的具体种因地而异。对泰安市小麦不同生育期煤污病的种群变化进行研究表明,不同时期小麦煤污病菌的种群组成不同,灌浆后期种类最多,成熟期则减少,灌浆前期种类也较少,优势种群基本保持稳定。 相似文献
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煤污病是长期以来上海地区危害较为严重的病害之一,防治工作一直存在较大的困难,本文主要通过介绍杨浦公园如何从抓住煤污病的成因入手,通过喷药、修剪、吊针等多种手段进行综合防治工作,逐步取得成效的过程。 相似文献
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不同脂肪水平对厚唇弱棘鯻血液生化指标的影响 总被引:2,自引:0,他引:2
以鱼油为脂肪源,配制脂肪水平分别为3.1%、5.8%、9.4%、11.9%和15.1%的5种试验饲料,饲喂厚唇弱棘鯻60 d,研究了不同脂肪水平对厚唇弱棘鯻血液生化指标的影响。结果表明:随着饲料中脂肪水平的升高,厚唇弱棘鯻血清中的高密度脂蛋白含量、谷草转氨酶活性和谷丙转氨酶活性显著升高(P〈0.05),总甘油三酯和总胆固醇含量显著下降(P〈0.05),低密度脂蛋白含量和碱性磷酸酶活性表现为先上升后下降的趋势。本研究认为,当饲料脂肪水平超过11.9%时,容易导致厚唇弱棘鯻肝功能受损,机体表现机能障碍。 相似文献
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《云南农业大学学报(自然科学版)》1991,(4)
本文报道昆明等地的14种园林植物上18种真菌病害的症状、病原菌、发病期与分布,其中国内新记录1种,省内新记录15种。 相似文献
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E J Milner‐Gulland Serge Garcia William Arlidge Joseph Bull Anthony Charles Laurent Dagorn Sonya Fordham Joshua Graff Zivin Martin Hall Jeffrey Shrader Niels Vestergaard Chris Wilcox Dale Squires 《Fish and Fisheries》2018,19(3):547-561
In terrestrial and coastal systems, the mitigation hierarchy is widely and increasingly used to guide actions to ensure that no net loss of biodiversity ensues from development. We develop a conceptual model which applies this approach to the mitigation of marine megafauna by‐catch in fisheries, going from defining an overarching goal with an associated quantitative target, through avoidance, minimization, remediation to offsetting. We demonstrate the framework's utility as a tool for structuring thinking and exposing uncertainties. We draw comparisons between debates ongoing in terrestrial situations and in by‐catch mitigation, to show how insights from each could inform the other; these are the hierarchical nature of mitigation, out‐of‐kind offsets, research as an offset, incentivizing implementation of mitigation measures, societal limits and uncertainty. We explore how economic incentives could be used throughout the hierarchy to improve the achievement of by‐catch goals. We conclude by highlighting the importance of clear agreed goals, of thinking beyond single species and individual jurisdictions to account for complex interactions and policy leakage, of taking uncertainty explicitly into account and of thinking creatively about approaches to by‐catch mitigation in order to improve outcomes for conservation and fishers. We suggest that the framework set out here could be helpful in supporting efforts to improve by‐catch mitigation efforts and highlight the need for a full empirical application to substantiate this. 相似文献
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为探明不同杀菌剂对蓝莓煤污病菌的室内抑菌活性,采用菌丝生长速率法测定6种杀菌剂对3种蓝莓煤污病菌的室内毒力。结果表明,煤污病菌对不同杀菌剂的敏感性差异较大,其中供试药剂氟菌.戊唑醇、多抗霉素、异菌脲对3种病原菌抑制作用较强,EC50值介于0.2409~3.1832 mg/L。 相似文献