Comparison of physiological and antioxidant responses of Anoda cristata and cotton to progressive drought     

HH RATNAYAKA  WT MOLIN  TM STERLING 《Weed Research》2012,52(4):358-366

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几种植物的杀线虫活性及其防治效果   总被引：4，自引：0，他引：4  

杨秀娟  何玉仙  翁启勇  卢学松  陈庆河 《植物保护学报》2004,31(4):435-436

笔者就几种植物的杀线虫活性及对番茄根结线虫的防治效果进行了研究,以期为植物线虫病防治提供新思路.  相似文献   

茭白田套养中华鳖防治福寿螺试验   总被引：2，自引：0，他引：2  

翁丽青  李建荣  陈亚雄 《中国植保导刊》2006,26(1):18-20

福寿螺是为害茭白的主要有害生物之一。茭白田套养中华鳖防治福寿螺效果试验表明,中华鳖对福寿螺有很强的捕食能力,日均取食量达到自身体重的60%左右,对福寿螺有极佳的田间控制作用,并且具有环保、生态、安全等特点。同时还因种养结合,极大地提高了茭农的经济效益,每667 m2收益最高达11 791元。  相似文献   

Enhanced field control of wheat take-all using cold tolerant isolates of Gaeumannomyces graminis var. graminis and Phialophora sp. (lobed hyphopodia)     

P. T. W. WONG  J. A. MEAD  & M. P. HOLLEY 《Plant pathology》1996,45(2):285-293

Cold tolerant isolates of Gaeumannomyces graminis var. graminis ( Ggg ) and Phialophora sp. (lobed hyphopodia), which produced at least comparable growth rates at 5°C to those of pathogenic G. graminis var. tritici ( Ggt ), were shown to control take-all disease in wheat effectively in 2 years of field experiments in New South Wales, Australia. The addition of oat inoculum of these fungi at the rate of 60 kg/ha to the seeding furrow significantly ( P  ≤ 0.05) reduced disease and increased grain yields by 33–45% compared to the Ggt alone treatment. The use of 30 kg/ha of oat inoculum also significantly ( P  ≤ 0.05) reduced disease and increased grain yields by 21–44%. These high levels of take-all control were obtained consistently from four field experiments on three different soil types with different pHs. A treatment inoculated with Ggg alone showed no disease symptoms and produced grain yields similar to that of untreated wheat. This fungus is, therefore, non-pathogenic to wheat. At high rates of inoculation of Ggg and Phialophora sp. (lobed hyphopodia), 65–80% of tillering wheat plants (GS 32) had root systems colonized by these fungi. In contrast, two Pseudomonas spp. and an isolate each of Ggg and Phialophora sp. (lobed hyphopodia), which did not grow at 5°C, were ineffective in controlling take-all. Take-all assessments during heading (GS 61-83) were highly correlated ( R ²=0.6047, P ≤0.0005) with the relative yield increase or decrease of inoculated treatments compared to the Ggt alone treatment. The use of a Ggg isolate (90/3B) and a Phialophora sp. (lobed hyphopodia) isolate (KY) for take-all control has been patented. These fungi are being developed for commercial use.  相似文献   

Clinical,pathological and epidemiological aspects of flood plain staggers,a corynetoxicosis of livestock grazing Agrostis avenacea     

EO Davis  GE Curran  WT Hetherington  DA NORMS Norms  GA Wise  IJ Rothi  AA Seawright  WL Bryden 《Australian veterinary journal》1995,72(5):187-190

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优势木对比法在选优工作中的应用     

潘新宏  翁俊维  李新华 《吉林林业科技》2005,34(5):22-25

在种子园选优方法中，优势木对比法比较常用。本文通过具体实例分析了用优势木对比法选取优树时应注意的问题，保证了优树的质量和种子园的建设。  相似文献   

Microscopic Particle Motions in Strongly Coupled Dusty Plasmas     

L I  WT Juan  CH Chiang  JH Chu 《Science (New York, N.Y.)》1996,272(5268):1626-1628

The microscopic particle motions from the crystal to the disordered state of a dusty plasma with micrometer-sized silicon dioxide particle suspensions in a radio-frequency glow discharge system were studied through an optical microimaging system. Small-amplitude random motion around the lattice sites of the crystal state, relative domain motion with varying boundaries, cooperative hopping in the liquid state, and highly disordered motion with increasing radio-frequency power were observed. Chaotic states with different spatial scales under the coherent and stochastic coupling between dust particles and self-organized background plasma fluctuations were also demonstrated.  相似文献   

蚯蚓-菌根相互作用对Cd污染土壤中速效养分及植物生长的影响   总被引：6，自引：0，他引：6  

成杰民  俞协治  黄铭洪 《农业环境科学学报》2006,25(3):685-689

以灰化土(Aquods)为供试土壤,分别加入4个浓度的Cd2 (0、5、10、20mg·kg-1)模拟土壤污染,设置每钵接种8条蚯蚓(Pheretimasp.)、接种菌根(InoculumEndorize-Mix2)和同时接种蚯蚓和菌根的处理,以不加蚯蚓和菌根为对照,并种植黑麦草(Loliummultiflorum),研究蚯蚓菌根相互作用对Cd污染土壤中速效养分和黑麦草生长的影响。结果表明,在供试土壤上和设定的浓度范围内,菌根浸染率不受添加Cd浓度的影响,平均浸染率为22%,加入蚯蚓能使菌根的侵染率提高9%。在Cd污染的土壤上,引进蚯蚓显著增加了黑麦草地上部的生物量,接种菌根对黑麦草地上部分产量没有明显影响,同时接种蚯蚓和菌根与只接种蚯蚓相比没有显著差异。只接种蚯蚓或菌根均能显著提高土壤中速效N、P的含量,而对速效K的含量无显著影响。菌根与蚯蚓并不存在着增加土壤中速效N、P、K的协同作用。蚯蚓、菌根均能增加黑麦草对N、P的吸收,同时接种蚯蚓和菌根促进了黑麦草对N的吸收,但没有促进对P的吸收。不论只接种蚯蚓或菌根,还是同时接种蚯蚓和菌根均不能促进黑麦草对K的吸收。  相似文献   

Research on Thermal Environment of Healthy City Residence     

HUANG Hai-jing  CHEN Gang WT 《保鲜与加工》2004,(6):18-21

After "SARS", people introspect on the human settlement, and the health conception becomes the focal point of attention.The thermal environment is the important content of the human settlement and a good thermal environment is the premise of healthy city, healthy residence and people's health.In this paper, the property and affection of the thermal environment are analyzed and the principle and the way to improve the thermal environment of city residence are investigated.All play an important role in the healthy human settlement.  相似文献   

Long-term survival of four dogs with disseminated Aspergillus terreus infection treated with itraconazole     

SE KELLY  SE SHAW  WT CLARK 《Australian veterinary journal》1995,72(8):311-313

SUMMARY Four dogs with disseminated aspergillosis caused by Aspergillus terreus were treated with oral itraconazole for 190 to 1095 days. Infection was eliminated in 1 dog. Two dogs were treated for 1000 and 1095 days but were eventually euthanased 572 and 485 days after treatment was stopped. At necropsy both dogs had widespread aspergillosis. The fourth dog was euthanased for other reasons after 190 days of treatment when it was showing a good clinical response although there was radiographic evidence that the disease was progressing.  相似文献