冻土病害识别,Disease distinguishes for frozen ground
1)Disease distinguishes for frozen ground冻土病害识别
2)disease recognition病害识别
1.Corn leafdisease recognition based on suport vector machine method;基于支持向量机的玉米叶部病害识别
英文短句/例句
1.Research on Plant Disease Recognition Based on Support Vector Machine;基于支持向量机的植物病害识别研究
2.Research on Cucumber Disease Identification Based on Image Processing and Pattern Recognition Technology;基于图像处理和模式识别技术的黄瓜病害识别研究
3.A Pattern Recognition System about Maize Leaf Disease Based on Computer Image Processing;基于计算机图像处理的玉米叶部病害识别系统
4.Identification and Control of Leaves Disease of Ornamental Autumn Zephyrlily优良园林植物葱兰的叶部病害识别及防治
5.Applied Research of Support Vector Machine on Recognition of Cucumber Disease支持向量机在黄瓜病害识别中的应用研究
6.Plant Leaf Disease Recognition Based on Kernel K-means Clustering Algorithm基于核K-均值聚类算法的植物叶部病害识别
7.Spore Image Recognition of Poplar Disease杨树病害孢子的图像识别技术研究
8.Study on the Application of Disease Test and Recognition in Concrete Structure;混凝土结构病害检测与识别应用研究
9.Hyperspectral identification of rice diseases and pests based on principal component analysis and probabilistic neural network基于PCA和PNN的水稻病虫害高光谱识别
10.Maize Leaf Disease Identification Based on Fisher Discrimination Analysis基于Fisher判别分析的玉米叶部病害图像识别
11.Diagnosis of Crop Disease,Insect Pest and Weed Based on Image Recognition;基于图像识别的作物病虫草害诊断研究
12.Forecasting Pest Occurrence and Recognizing Insect Using Support Vector Machine;基于SVM的病虫害发生量预测与昆虫识别
13.A Study of Image Processing and Identifying Technology on Cucumber Disease;黄瓜病害图像处理与识别技术的应用研究
14.Maize Leaf Disease Identification Technique Study Based on Image Recognition;基于图像识别的玉米叶部病害诊断技术研究
15.Study on Digital Image Recognition of Prunus Armeniaca Leaf Diseases and Insect Pests;山杏常见叶部病虫害图像识别技术研究
16.Identification of Occupational Hazards in A Medium Size Coalmine and Its Countermeasures某中型煤矿职业病危害因素识别及防控对策
17.Construction of Diagnosis Model of Rice Diseases and Insect Pests and Implementation of the Intelligent Diagnosis System;水稻病虫害诊断模型构建及智能咨询识别系统的实现
18.Design & Analysis on Tomato Disease Remote Diagnostics Expert System;番茄病害远程辅助识别与诊断专家系统的分析和设计
相关短句/例句
disease recognition病害识别
1.Corn leafdisease recognition based on suport vector machine method;基于支持向量机的玉米叶部病害识别
3)roadbed damage in permafrost regions冻土路基病害
4)ill track recognition轨道病害识别
5)frost failure冻胀病害
6)permafrost hazards冻土灾害
1.Due to the high altitude of the Tianshan range,the road bed and surface are threatened by a variety ofpermafrost hazards that include thaw slumping,frost swelling,thaw settlement,gelifluction and desertification.独山子至乔尔玛段公路位于天山达坂海拔较高处,沿线多种冻害(包括热融滑塌、冻胀、冻融泥流及路基融沉等)经常发生,随着整治改建工程的实施,逐渐改变了地气热交换的界面,多年冻土原有的水热平衡遭到了破坏,其结果是通过路基进入多年冻土的热收支呈正平衡发展趋势,积热作用导致了路基下多年冻土的融化,将会引起公路的融化下沉,冻土灾害将趋于严重,本文初步探明了该公路沿线多年冻土的特征,提出了施工和运营中应采取保护冻土的设计原则。
延伸阅读
日光温室生菜病害识别与防治一、生菜灰霉病1.症状灰霉病主要危害叶片和茎基部,幼苗受害多在接近地面的茎、叶上。定植后从老叶开始发病。病部成水渍状病斑,叶片变黄枯死,病茎腐烂,密生鼠灰色霉,严重时近地面整个基部被侵染,使植株凋萎。2.防治选用健康株留种,播种前用盐水(盐0.5千克加水5千克)选种,并清除与种子混杂的菌核。摘除老叶,改善通风条件,加强换气,减轻病害。合理施肥,增施磷、钾肥,清洁田园,拔除发病的中心病株。药剂防治可喷施以下几种药剂:50%多菌灵可湿性粉剂500倍液,或50%托布津可湿性粉剂500 倍液,或50%氯硝铵可湿性粉剂400倍液,或65%代森锌可湿性粉剂400倍液,或50%退菌特800倍液,或抗菌剂“407”800倍液,或石灰∶硫酸铜∶水为1∶2∶200~240的波尔多液,7~10天喷1次,连续喷2~3次,或基菌特水剂2000倍液。二、生菜软腐病1.症状软腐病的发生在生长后期,其病原物为细菌,土壤、肥料、昆虫均可带菌。秋播生菜进入结球期和收获期时,叶茎外观无异常。病原菌由伤口侵入,秋初高温时易发病。感染株白天萎蔫,傍晚恢复正常,严重时夜间萎蔫不能恢复。解剖观察可见精髓部空洞化,发出恶臭,最后茎部腐烂死亡。2.防治定植后连续几次喷40%有机酮800倍液。发病初期选用下列药剂喷施,注意喷射近底部的部分,控制病害。50%代森铵水剂800倍液,或链霉素200~300单位,或氯霉素300单位,每隔7~10天喷1次,连续喷2~3次。三、生菜腐烂病1.症状腐烂病为在结球叶表面的2~3层叶上产生水渍状病斑,以后到整叶腐烂,并向内叶转移。从结球开始,冻害越重病亦重,最重部位的叶汁可溶性固形物含量降低。进入结球期根部生活力下降,病害若延续到收获期,受损严重。2.防治复收栽培的生菜应从结球开始就注意彻底防虫,以避免害虫伤害结球叶,引起病害发生。冬收栽培的生菜应注意防止冻害发生,可采取拱棚保温,定植大苗,缩短生育期,减轻病害发生。发病初期喷洒40%有机酮800倍液。四、生菜叶枯病1.症状叶枯病主要危害叶片,病斑不规则灰褐色至深褐色,叶边缘呈黄褐色,病斑上撒生黑色小点,即是病菌分生孢子器。低温高湿条件下发展迅速。另外,白天干旱,夜间露多,温度过高或过低时,生长不良,抗病力下降,病害加重。2.防治选用无病种子或种子消毒,种用亩根应选择无病叶柄和茎叶,以防带菌。使用两年陈种子有一定防病效果,新种子一定要消毒后使用,可用 48~49℃温水浸种30分钟,浸种时不断搅拌,使种子受热均匀。浸种后立即投入冷水中降温。此法对种子发芽率有点影响,一般降低发芽率10%左右,但消毒比较彻底。发病初期可摘除病叶减少病原。定植缓苗后,每隔10~15天喷药1次。可喷施以下几种药剂:波尔多液(11∶0.8∶2000),或65%代森锌可湿性粉剂500倍液,或50%代森铵1000倍液,或75%百菌清500~800倍液,或石灰酮粉(80份石灰,20份硫酸铜粉)或石灰酮硫磺粉(30份石灰,10份硫酸铜粉,10份硫磺粉)。