共查询到17条相似文献，搜索用时 125 毫秒
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在ＰＤＡ含毒介质上的试验表明,苯莱特（５０％ＷＰ）、多菌灵（５０％ＷＰ）、甲基托布津（７０％ＷＰ）抑菌效果最好,稀释３０万倍的药液对尖孢镰刀菌抑菌率分别为１００％、９１．９％、６７．９％,而粉锈灵（１５％ＷＰ）３０００倍液,抑菌率仅为７０．１％;苯莱特、粉锈灵１５００倍液对腐皮镰刀菌抑菌率仅为９４．４％和１４．０％。苯莱特和粉锈灵对尖孢镰刀菌的抑菌效果明显高于腐皮镰刀菌。抑菌圈法试验,多菌灵、苯莱特５００～１０００倍液对腐皮菌的防效又优于尖孢镰刀菌,而粉锈灵对２种镰刀菌均不产生抑菌圈。香荚兰幼根接种药效试验,粉锈灵对尖孢镰刀菌防效最好（５６．６％）,多菌灵、甲基托布津次之（５１．６％、５０．９％）,而苯莱特较差（４０．４％）。粉锈灵１０００倍液浸泡１ｈ和盆栽施药,均对香荚兰幼根产生药害。 相似文献
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在网棚桁架式栽培条件下,使用苯莱特(50%WP)、粉锈灵(15%WP)、恶霉灵(95%WP)2000～3000倍液淋灌土壤,防治香荚兰扦插幼苗根腐病,3种农药施用3个月内均有防效,其中苯莱特效果最好。粉锈灵表现出对幼苗生长有抑制现象。 相似文献
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花椒白蜡绵粉蚧的生物学观察和防治 总被引：2，自引：0，他引：2
白蜡绵粉蚧在涉县主要为害花椒，１年１代，以若虫在枝干上越冬。若虫和成虫活动期，可用９６８８－Ⅰ号或９６８８－Ⅱ号农药稀释１０倍液涂干或分别喷洒５０％辛硫磷、４０％久效磷、１０％克蚧灵乳油１０００倍液，毒杀活动若虫和成虫。 相似文献
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一、病害及防治措施 １．松针锈病：该病是白头翁鞘锈菌引起的松针病害，被害率为４５％左右。防治措施用５０％退菌特、浓度５００－８００倍的溶液在锈孢子未释放前连续２－３次防治，效果较好，或铲除中间寄主白头翁即可。 ２．松瘤锈病：该病是田松芍柱锈菌引起的枝干病害，被害率为４０％左右。防治措施，用７０％的粉锈于１０００倍溶液，在锈孢子堆释放前进行防治或用饱和食盐水，喷灌中间寄主芍药根茎效果最佳。 ３．松烂皮病：该病是由松薄盘菌引起的樟子松枝干病害，被害率为３８．９％。防治措施用５０％托布津５００－７００倍… 相似文献
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危害枸杞的主要病虫害有枸杞蚜虫、枸杞瘿蚊、枸杞瘿螨、枸杞锈螨，常造成枸杞大面积减产和降低果品质量。研究表明，用３％ 的甲基异柳磷颗粒剂或用３％ 乐果粉、３％ 的呋喃丹进行土壤处理，或以１０００ 倍液的氧化乐果（或久效磷）进行树冠喷雾，可以使上述病虫害得到很好的控制。 相似文献
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诱发桃形李煤污的主导因子是梨园蚧危害，该虫在浙江浦江１年３代，以受精雌成虫越冬。防治方法：２月中下旬，用３￣５度石硫合剂全面喷洒；４月中下旬，５０％杀螟松８００￣１０００倍液喷洒；６月中下旬，５０％甲基托布津０００倍液喷洒；１１月份，５０％久效膦６￣１０倍涂干。 相似文献
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应用预测预报技术指导梨小食心虫防治试验研究 总被引：2，自引：0，他引：2
梨小食心虫在皋兰县中心乡主要为害桃、梨、杏树的果实和新梢，一年发生３代。４月下旬、５月上旬和６月上旬至下旬是防治适期。采用２．５％敌杀死４０００倍液，或５０％杀螟松乳油１０００倍液进行喷雾防治效果好 相似文献
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对洒金东瀛珊瑚菌核性根腐病症状、发生原因及发病规律进行了研究，并进行了五种杀菌剂的室内抑菌试验、田间药剂防治试验，结果表明：多霉威可湿性粉剂1000倍液防治效果最好、其次为咪鲜氨乳油1000倍液和三唑酮乳油1000倍液。 相似文献
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临沧孟定地区防治橡胶树白粉病采用硫磺粉和粉锈宁烟雾剂交替使用,在古铜叶病率达20%时用粉锈宁烟雾剂作首次中心病区(株)防治;发病率达40%时用粉锈宁烟雾剂作橡胶林全面防治;当抽叶量达50%以上时,用硫磺粉和粉锈宁烟雾剂交替使用(晴天施硫磺粉,阴天施粉锈宁)的技术,大面积防治取得良好效果,相对防效85.9%。 相似文献
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Six endophytic bacterial strains from wheat roots, selected from extensive screening tests, were studied in greenhouse pot
experiments against take-all disease of wheat, caused by Gaeumannomyces graminis var. tritici (Ggt). For comparison, the fungicide triadimefon was included. All six bacterial strains and triadimefon significantly reduced
take-all in wheat plants between 39.4 and 57.3% compared to the inoculated control. Treatment with the bacterial strains also
significantly increased growth parameters of roots (e.g., average length, fresh, and dry weight) in comparison with the inoculated
control. One of the endophytic bacterial strains, designated EDR4, which proved to be most consistent in further greenhouse
tests, was also examined in field trials against take-all in wheat. In the field experiment 2006/2007, height of wheat plants
in Ggt inoculated plots was significantly reduced compared to the non-inoculated treatments. Yield parameters such as kernels
per head and thousand kernel weight (TKW) in the inoculated control were lower compared to other treatments. In the inoculated
plots, individual treatments with the strain EDR4 increased yield compared to the inoculated control. In the field trial 2007/2008
treatments with strain EDR4 as well as the fungicide triadimefon reduced take-all by 49.6 and 61.9%, respectively, compared
to the inoculated control. At harvest, in the inoculated control plant height, seeds per head and TKW were significantly lower
compared to the other treatments. Treatments with EDR4 eliminated the detrimental effects of take-all on grain yield to a
similar degree as triadimefon application. The strain EDR4 distinctly inhibited growth of Ggt in vitro and was identified
as Bacillus subtilis on the basis of its morphology and 16S rRNA sequence analysis as well as physiological and biochemical characteristics. These
results indicate that the strain EDR4 has potential in directly controlling take-all disease of wheat. 相似文献
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