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山西省稷山县各大板枣主产区枣缩果病危害严重,2010年笔者对其进行了田间药剂防治试验,结果表明：除75%百菌清可湿性粉剂1 000倍液外,各处理的防治效果与对照之间均达到了显著差异;85%枣病克星可湿性粉剂600倍液的防治效果与75%百菌清可湿性粉剂800倍液和1 000倍液,85%枣病克星可湿性粉剂800倍液和1 000倍液,75%百菌清可湿性粉剂1 000倍液＋72%硫酸链霉素1 000万单位3‰液5个处理间差异显著;75%百菌清可湿性粉剂600倍液＋72%硫酸链霉素1 000万单位3‰液和75%百菌清可湿性粉剂600倍液两个处理防治效果与75%百菌清可湿性粉剂1 000倍液处理间差异显著。 相似文献
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从百合种球消毒、圃地消毒、药剂防治方面开展百合真菌性病害化学防治试验。结果表明,联合运用圃地消毒和种球消毒,可以有效地预防百合真菌性病害初次侵染发生,采用25%的蓝点可湿性粉剂1 200倍液、1 500倍液,80%的云生可湿性粉剂600倍液,10%世高水分散粒剂1 000倍液防治百合真菌性病害能取得较好的防治效果。 相似文献
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膏桐白粉病是永胜县膏桐的重要病害，病菌侵染幼嫩的茎、叶、花序及果实，受害严重林分感病率为100％，病情指数高达70％．试验显示，膏桐白粉病在永胜县始发期为5月中旬至7月上旬，盛发期为7月中旬至9月下旬，末期为10月上旬至12月；有效防治药剂及使用浓度为15％三唑酮可湿性粉剂400～600倍液，29％石硫合剂水剂300～500倍液，50％多菌灵·硫磺可湿性粉剂250～1000倍液． 相似文献
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菊花霜霉病多发生在平均温度16．4℃-19．0℃、年降雨量1500min左右、春季低温多雨的山区，是菊花的主要病害之一。选用抗病品种、用50％福美双可湿性粉剂拌种、加强肥水管理、防止田间积水及湿气滞留对菊花霜霉病具有很好的预防效果。发病初期用72％克露可湿性粉剂600倍液喷雾，防治效果达70％；用60％灭克可湿性粉剂800—1000倍液和65％代森锌可湿性粉剂500倍液喷雾，防治效果分别达到85％和90％；用69％安克·锰锌可湿性粉剂800倍液喷雾，每隔10d1次，防治效果达80％。 相似文献
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枇杷树皮腐烂病为害枇杷枝干,引起皮层坏死腐烂,严重时整株枯死。病菌以菌丝体和分生孢子器在病皮中越冬,翌年5月初放射出分生孢子,靠雨水传播,以皮孔和伤口侵入,进行初次侵染。田间接种潜育期10—15天。在病斑上分别涂以1:1:10波尔多液、50％退菌特可湿性粉剂50倍液及波美5度石硫合剂,对该病有一定的抑制作用。集约经营亦能提高树木的抗病力。 相似文献
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红豆杉属于珍稀濒危植物,在栽培过程中易受到病害的侵袭,为了筛选不同杀菌剂对红豆杉立枯病菌—茄腐皮镰孢菌的毒力作用和防治效果,在室内采用生长速率法进行了6种杀菌剂对红豆杉立枯病菌的室内毒力测定,结果表明,6种杀菌剂的毒力效果分别为:代森锰锌可湿性粉剂菌必治可湿性粉剂70%甲基硫菌灵可湿性粉剂80%代森锌可湿性粉剂50%多菌灵可湿性粉剂75%百菌清可湿性粉剂。代森锰锌对红豆杉立枯病菌的抑菌率最高,毒力作用最强,EC50值为0.32 mg·L~(-1)。 相似文献
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针对山西省交城县枣产区危害严重的枣缩果病,于2011年对其进行田间药剂防治试验。结果表明：除菌速清水剂800倍液处理外,其余处理的防治效果与对照均差异显著。其中,75％百菌清可湿性粉剂1000倍液＋72％硫酸链霉素1000万单位3％o液防治效果最好,达到97．6％．85％枣病克星可湿性粉剂600倍液,70％甲基硫菌灵可湿性粉剂200倍液,75％百菌清可湿性粉剂1000倍液,50％多硫悬浮剂600倍液,70％甲基硫菌灵可湿性粉剂200倍液＋72％硫酸链霉素1000万单位3‰液,75％百菌清可湿性粉剂1000倍液＋72％硫酸链霉素1000万单位3％。液6个处理防治效果差异不显著,与菌速清水剂800倍液处理差异显著。 相似文献
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以不同药剂、不同浓度、不同处理方法对马占相思白粉病进行野外防治试验,并对结果作方差分析,结果表明:甲基托布津70%可湿性粉剂的1 000~2 000倍液对马占相思白粉病有良好的防治效果,相对防效达90%以上;马占相思白粉病野外化学防治以甲基托布津70%可湿性粉剂1 000倍液 粉锈宁15%可湿性粉剂1 000倍液 腈菌唑12.5%可湿性粉剂3 000倍液常规喷雾防治为佳。 相似文献
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番荔枝枯果病主要危害果实，造成果实干腐僵硬，发病株率100％。病原为豆英大茎点菌Macrophoma mame Hara．，病菌以菌丝体、分生孢子器在树上僵果中越冬，高湿对病菌侵入、发展、流行有利。及时摘除僵果，幼果初期喷洒70％甲基托布津wp750倍或75％百菌清500倍液可控制此病的危害。 相似文献
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火炬松枯梢病Sphaeropsis sapinea是为害火炬松Pinus taeda的毁灭性病害。该文通过剪枯梢、施肥和喷药相结合进行防治试验，结果表明：以前枯梢为主，结合施肥或喷50％多菌灵的防治措施效果较好，防治率88.6%。 相似文献
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樟子松枯梢病的侵染发生规律 总被引：1，自引：0，他引：1
在辽宁省章古台 ,松枯梢病 Sphaeropsis sapinea主要发生在樟子松 Pinussylvestrisvar.mongolica苗木和中老龄树木上 ,树龄越大 ,病害越重。病菌孢子在整个生长季节均能放散与传播 ,降雨节律和降雨量直接影响到孢子的扩散期、高峰期和数量。降雨量大的年份 ,孢子放散数量多 ,病害发生重。人工接种树木发现 ,从新梢伸长至针叶发育完全期间 ,病菌无需伤口即可直接侵入当年新梢并使之枯萎。病菌的侵入时期主要在 5月下旬至 6月下旬 ,此间也是化学防治的最佳时期。野外自然条件下 ,病害自 7月份开始发生 ,8月中下旬发展最快 ,1 0月份停止。樟子松是最易感染松枯梢病的树种之一。 相似文献
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The pine-top weevil Pissodes piniphilus is known to be often associated with trees infected with resin-top disease. In this paper, the ability of the weevil to carry Endocronartium pini spores in laboratory conditions and its ability to infect pines in the field were studied. The weevil may carry spores and cause infection in healthy pines. 相似文献
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为了筛选出高效、低毒、低残毒,符合环保要求的白蚁防治药剂,从目前国际上开发的新型白蚁防治药剂中,选用5类有代表性的药剂及复配制剂进行速丰桉新造林地白蚁防治田间试验,结果表明:5%阿维菌素可湿性粉剂、50%福美双可湿性粉剂、2.5%溴氰菊酯乳油、40%毒死蜱乳油、22%甲维氟铃脲可湿性粉剂及复配药剂在林间防治效果均达70%以上。其中,生物制剂5%阿维菌素可湿性粉剂和复配药剂防治效果达85%以上,可以代替氯丹、灭蚁灵和毒死蜱在白蚁防治中使用。同时,阿维菌素对环境友好,在林木白蚁防治中有较好的应用前景。 相似文献
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The epidemiology of Marssonina brunnea (Ell. et Ev.) P. Magn., a leaf parasite of cultivated poplars . The relationship between outbreaks of the disease and ripening of ascospores and release of conidia in spring was studied in 1972 and 1973 in the north (Lille) and the east (Nancy) of France. During the growing season, the numbers of spores released by water splash during rainfall and also spores present in the air were systematically recorded. The various records and observations were related to climatic conditions. 相似文献
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Two-year-old Corsican pine (Pinus nigra ssp. laricio var. Corsicana) seedlings were either well watered or subjected to a moderate drought for one month before being lifted from the nursery bed on October 9 and transplanted. Well-watered, non-transplanted seedlings served as controls. Needle predawn water potential (Psi(wp)), non-structural carbohydrate concentrations and plant development (survival, bud break, shoot elongation) were assessed before and during the first growing season after transplanting. On April 16, just before bud break, Psi(wp) was lower for the well-watered + transplanted and drought-conditioned + transplanted seedlings (Psi(wp) = -1.45 and -1.83 MPa, respectively) than for the controls (Psi(wp) = -0.56). There was a close relationship between the Psi(wp) measured on April 16 and bud break, shoot elongation and plant survival during the following growing period. Above a Psi(wp) of -1.1 MPa, all plants developed normally. Between -1.1 MPa and -1.6 MPa, bud break, and thus shoot elongation, did not occur in all plants. Between -1.6 MPa and -2.1 MPa, the plants were characterized by the absence of shoot growth, but mortality was zero. Below -2.1 MPa, there was a large increase in plant mortality. On April 16, starch concentrations were markedly lower in the roots of transplanted seedlings than in the controls. There was a positive correlation between Psi(wp) and root starch concentration. The Psi(wp) (-2.3 MPa) at which complete starch depletion was observed in the roots corresponded to the Psi(wp) below which plants did not survive. These results suggest that mechanisms specifically linked to altered water status and metabolic processes associated with altered carbohydrate status are involved in transplanting stress; however, it was not possible to disentangle the two effects. Drought conditioning did not lead to a marked increase in soluble carbohydrate concentrations, as reported for other species, and did not increase plant tolerance to transplanting stress. 相似文献