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    Antifungal Activity of Penicillium striatisporum Strain P.st10 and Its Inhibition against Pepper Blight Caused by Phytophthora spp.
    一株疫病拮抗青霉P.st10菌株的抗菌活性及其对辣椒疫病的盆栽防效
    Among seven juvenile hormone analogues,ZR_(777),ZR_(515),ZR_(512),734-Ⅱ were the more efficient to the big headed ant,Pheidole indica Mayr,and their efficiency might be put in the following order:ZR_(777)>ZR_(515)>ZR_(512)>734-Ⅱ.
    通过保幼激素类似物和饵料对印度大头蚁防效的筛选,选出有效保幼激素类似物 ZR_(777)、ZR_(515)、ZR_(512)和最佳饵料熟鱼肉。
    The inhibition rate of 5fold diluted filtrate of isolates AS818 and AS929 against Fusarium was 70.5% and 885%, respectively.
    其中5倍稀释的AS818及AS929发酵滤液在PDA平板上的抑菌率分别为70.5%和88.5%,其温室防效分别为77.0%和81.4%。
    ·hm -2 would have a good efficacy.
    hm-2 就可以得到很好的杂草防效
    Actinomycete strains YIM31658,YIM31679,YIM31777,which had strong activities for restraining pathogenic fungi Botrytis cinerea,isolated from the soil samples collected from Yongsheng and Zhongdian,Yunnan Province.
    从云南永胜、中甸采集的土壤样品中分离到3株放线菌菌株YIM31658,YIM31679,YIM31777.具有很强的抗灰霉病活性,防效均达到100%.
    ③if the plants were inoculated with an-thracnose pathogen,Colletotrichum higginsianum,immediately after spraying BS-2 suspension,the best control effect was obtained,the effects in the third and sixth day were 95.12% and46.71% respectively;
    ③菌株对白菜炭疽病有较好的防治效果,但对不同时间接种病原菌的防治效果有所不同,以叶表面喷雾接种菌液后,立即接种病原菌的防效最好,其第3天和第6天的防效分别达95.12%和46.71%;
    SCREENING OF BIOCONTROL STRAINS AGAINST VEGETABLE GREYMOULD AND THEIR BIOCONTROL EFFICIENCY
    蔬菜灰霉病生防菌的筛选与防效试验初报
    The control of diarrhea with probiotics is not only safe, no residue and resistance, but also can increase feed utilization rate, promote animal growth and improve product quality. But low efficacy and high cost are the limiting factors for the practice of the method.
    微生态制剂(又称益生菌制剂)在防治肠道疾病方面,不仅安全无害,无残留,不产生抗药性,还有提高饲料利用率,促进动物生长,改善产品品质等作用,是国内外研究的热点,但防效低和使用成本较高是推向实用的瓶颈。
    The following results were obtained:(1) Soil fumigation treated with different dosage of sulfuryl fluoride, the results of preliminary experiments showed that sulfuryl fluoride at the rate of 5.44 × 10~(-2)g/L~43.52×10~(-2)g/L,presented good control efficacy to Fusarium oxysporum f. sp. meloni. The results were identical with the research results which were done in the field by our laboratory.
    (1)采用不同剂量的硫酰氟室内土壤熏蒸,结果表明硫酰氟用量在5.44×10~(-2)g/L~43.52×10~(-2)g/L对土壤中尖镰刀菌有很好的防效,与本室所做的硫酰氟田间药效试验结果相一致,说明硫酰氟是很有潜力的土壤熏蒸剂。
    Chemical germicides mainly are used to resist the disease induced by Sclerotinia sclerotiorum happened seriously. However, chemic-control is not only costly but also polluted the environment and the effect cannot do execution effectively.
    目前对菌核病的防治主要依靠化学农药,然而化学防治不仅成本高、污染环境,而且防效也不理想;
    The strain 1-1-4 isolated from soil in shanghai was identified by the sim- ple and quick cross-antagonistic plate assay in the process of screening antagonistic bacteria for biocontrol of peach crown gall disease.
    运用平皿相互拮抗筛选法,从上海市郊桃园土壤中分离得到一株编号为1-1-4的细菌菌株,田间防效可达95%以上。
    The control effects of 2.5 % Deltame thrin, 45% Malathion and Bt are over 85 %,much better than other pesti-cides that have been tested.
    以2.5%敌杀死、45%马拉硫磷乳油和BT防治效果较好,防效可达85%以上。
 

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