共查询到20条相似文献，搜索用时 78 毫秒
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1997年6～7月，我们在淳安县新安江开发总公司茅头尖林场的10年生温州蜜柑上进行了35％除螨特（M—04，浙江省化工研究院生产），防治柑桔红蜘蛛的药效试验。结果表明，35％除螨特1000倍、1500倍、2000倍，40％水胺硫磷（杨州农药厂生产）1500倍及三氯杀螨醇（杨州农药厂生产）800倍液，药后3天的防效分别为94．5、91．2、89．7、85．4、75．4％；药后10天的防效分别为98．5、96．7、95．2、89．7、78．2％。35％除螨特1000倍和1500倍液防治柑桔红蜘蛛的效果优于40％水胺硫磷1500倍和三氯杀螨醇800倍。除螨特防治柑桔红蜘蛛效果好@叶云飞$… 相似文献
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2000年进行药剂防治梨木虱试验，其中5%锐劲特1500倍液和0.3%敌虱螨2000倍液效果较好，药后3天的防效均在90%以上，药后5天防效可达100%，为延缓害虫产生抗性，可与阿维菌素交替使用。 相似文献
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于1990年,应用太原化工厂生产的杀螨剂35%绝螨一号,对山楂红蜘蛛进行了田间防治试验。浓度处理为1500、2000和3000倍,对照药剂为40%水胺硫磷1500倍。结果35%绝螨一号1500～3000倍喷布后l～7天杀虫率均在98%以上,水胺硫磷为89.3%;在药后25天35%绝螨一号的虫口数量有回升现象,但到50天时虫口数又急剧下降,而40%水胺硫磷1500倍在同期内虫口数量回升慢,但50天时虫口数量急剧上升。说明绝螨一号对杀卵效果稍差,不过从50天后的虫口数量下降趋势来分析,绝螨一号除杀死活动态螨以外,对孵化后的一代成螨有抑制繁殖的作用;且绝螨一号持效期较长,据调查… 相似文献
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对4种杀虫剂甲氨基阿维菌素、阿维菌素、高效氯氰菊酯、虫酰肼进行了防治冬枣尺蠖的田间药效试验。结果表明,0. 5%甲氨基阿维菌素微乳剂750倍液的防效最好,药后3～15天的防效为84. 0%～94. 0%; 1000倍液的防效与药剂1. 8%阿维菌素乳油1500倍液、4. 5%高效氯氰菊酯乳油1500倍液及10%虫酰肼乳油1000倍液均无显著差异。试验各药剂均对冬枣安全无药害。 相似文献
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今年、笔者在常山县辉埠镇西坞村姜连兴的7年生椪柑树上,进行了YZ—901农用增效剂加在常用农药中防治柑桔红蜘蛛的增效试验,结果小结如下。 使用40％水胺硫磷乳油(黄岩农药厂生产)1000倍液,加入0.03％的YZ 901农用增效剂(广州有色院与江西省友丰公司下属化工厂联合生产),每株喷药量为5公斤。防治柑桔红蜘蛛的死亡率,药后3、7、15和20天分别为100％、100％、100％和98.6％。而单用40％水胺硫磷乳油1000倍液的死亡率分别为83.3％、89.8％、92.6％和80.6％。试验表明,在水胺硫磷乳油同样 相似文献
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Transcatheter arterial chemoembolization (TACE) has become an important way to treat hepatocellular carcinoma (HCC). TACE can kill HCC cells directly. Cytokine-induced killer (CIK) cell therapy improves immunity. CIK sequential therapy combined with TACE improves treatment safety, efficacy, the quality of life and long-term outcome for the HCC patients. This review summarizes the status and latest progress of CIK cell therapy combined with TACE in the treatment of HCC. 相似文献
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The effects were studied of different concentrations of cycloheximide on the chemical deblossoming of mangoes. Very good results were obtained with 250 and 500 ppm and the panicles were completely killed within ten days of application. Before the old panicles were completely shed, new panicles which ultimately set fruits began to emerge. 相似文献
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野牛草属暖季型草坪草，质地柔软，草层厚密，耐践踏，具有耐旱、耐热、抗病虫害、适应性强等特点，管理粗放，年灌溉次数比较少，比冷季型草节约用水20％～40％，能够节约资金、节省水资源，在建设节约型园林绿化方面有突出的优势。野牛草的繁殖方式有：播种繁殖，草块、草皮繁殖。 相似文献
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对不同抗性甜瓜接种蔓枯病菌后测定叶片中叶绿素、可溶性糖、可溶性蛋白含量和3种防御酶（PPO、PO、PAL）的活性。结果表明：叶绿素含量在接种后呈现先增加后减小趋势,抗病甜瓜增幅大,叶绿素含量高于感病甜瓜;可溶性糖含量在接种后先降低后升高、再降低再升高,抗病甜瓜可溶性糖含量高于感病甜瓜;可溶性蛋白含量在接种后逐渐升高,感病甜瓜峰值出现早于抗病甜瓜;3种酶活性在接种后都有不同程度提高,其中抗病甜瓜酶活性增幅高于感病甜瓜。几种酶活性变化可以用于甜瓜蔓枯病抗性鉴定。 相似文献
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果园生草或稻（杂）草树盘覆盖具有调节果园微生态环境，防止水土流失，增强土壤通气性和透水性，保持旱季土壤湿度，提高土壤有机质，培肥地力，有利于害虫天敌生存活动及改善果实品质等作用。灌阳县现有李园近3333hm^2，绝大部分种植于山坡地，从夏末开始至秋冬季属于少雨干旱季节，此时正值李树果实迅速膨大期、成熟期和花芽分化期，若干旱因素引起李树供水、供肥不足，将影响到果实品质，花芽分化质量，形成大小年挂果，产量不稳定。近年来，笔者在桂林灌阳县的果园中进行了生草栽培、稻（杂）草覆盖栽培的试验，取得良好效果。 相似文献
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Protected horticultural crops as well as those planted in open fields particularly in the Mediterranean region have to cope with increasing salinization of irrigation water. High salinity of the supply water has detrimental effects on soil fertility and plant nutrition and reduces crop growth and yield. This study was conducted to determine if pre-inoculation of transplants with arbuscular mycorrhizal (AM) fungi alleviates salt effects on growth and yield of tomato (Lycopersicon esculentum Mill. Cv. Marriha) when irrigated with saline water. Tomato seeds were sown in polystyrene trays with 20 cm3 cells and treated with AM fungi (AM) or without (nonAM) Glomus mosseae. Once the seedlings were reached appropriate size, they were transplanted into nonsterile soil in concrete blocks (1.6 m × 3 m × 0.75 m) under greenhouse conditions. The soil electrical conductivity (ECe) was 1.4 dS m−1. Plants were irrigated with nonsaline water (ECw = 0.5 dS m−1) or saline water (ECw = 2.4 dS m−1) until harvest. These treatments resulted with soil EC at harvest 1.7 and 4.4 dS m−1 for nonsaline and saline water treatments, respectively. Root colonization with AM fungi at flowering was lower under saline than nonsaline conditions. Pre-inoculated tomato plants with AM fungi irrigated with both saline and nonsaline water had greater shoot and root dry matter (DM) yield and fruit fresh yield than nonAM plants. The enhancement in fruit fresh yield due to AM fungi inoculation was 29% under nonsaline and 60% under saline water conditions. Shoot contents of P, K, Zn, Cu, and Fe were higher in AM compared with nonAM plants grown under nonsaline and saline water conditions. Shoot Na concentrations were lower in AM than nonAM plants grown under saline water conditions. Results indicate that pre-inoculation of tomato transplants with AM fungi improved yield and can help alleviate deleterious effects of salt stress on crop yield. 相似文献
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施用ALA对不同棚龄蔬菜大棚番茄硝酸盐累积的影响 总被引：1，自引：0，他引：1
对3、5、7、10 a棚龄蔬菜大棚内的番茄喷施了不同浓度的ALA,结果表明:ALA对番茄果实内NO3--N、NO2--N的累积有较好的抑制效果,且长龄棚内的抑制效果最好,对NO2--N累积的抑制作用优于对NO-3-N的作用.试验范围内高浓度ALA的效果最佳. 相似文献
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《食用菌学报》2015,(1)
在中国西南地区的野生食用菌市场上,一类与印度块菌复合群(Tuber indicum complex)形态相近的黑块菌,一直倍受人们的关注。此种"黑块菌"即为以前在我国曾报道记载过的夏块菌(T.aestivum)。2009年,笔者采到其子实体,通过形态学及nrDNA-ITS序列的比对和分析,发现中国的夏块菌与欧洲夏块菌不是同一个种,为姊妹种关系,并命名为中华夏块菌(Tuber sinoaestivum)。在本文中,笔者对其生态环境包括土壤、海拔、共生树种、地理分布等进行了调查分析。结果表明,中华夏块菌主要发生在海拔1800~2800m的亚热带针叶林下的弱碱性(pH 7~8)、疏松钙质的土壤中,与华山松(Pinus armandii)形成菌根,为共生关系。在云南大理、丽江、保山、昭通等地野生菌市场时有发现其踪迹;但迄今为止,仅在四川省境内的会东县采集到自然状态下的子囊果;故而,其自然地理分布情况不详。 相似文献