安康市5种冷季型草坪草坪用价值评价对比研究     

杜利民  沈大刚 《安徽农业科学》2007,35(35):11452-11453

以5种冷季型草坪草高羊茅(F.arundinaces Schreb.)、紫羊茅(F.rubra L.)、草地早熟禾(P.pratensis L.)、多年生黑麦草(L.perene L.)、匍匐剪股颖(A.stolonifera L.)为研究材料,对其坪用指标进行了调查测定,并对其坪用价值进行了综合评定。结果表明:草地早熟禾、匍匐剪股颖适宜于观赏性草坪;高羊茅适宜于运动草坪和游憩草坪;多年生黑麦草适宜于水土保持草坪。  相似文献   

草坪景观的色彩与工程技术研究——以西安国际高尔夫球场为例     

王太春  段森宇  瞿燕花 《中国园艺文摘》2012,(7):68-70

草坪是城市景观中的重要组成部分,它不仅为市民提供观赏休闲的场地,也是城市体育设施如足球场、高尔夫球场、滑草场、棒球场等的场地材料,更为重要的是具有吸附尘土、保水、吸热、吸收二氧化碳、释放氧气等多种生态功能。各种草坪的色彩在各个季节中呈现不同的微妙变化,通过不同的管理技术还可以营造出不同的纹理和色彩变化供人观赏,经常在电视高尔夫球、足球比赛中看到条状、格状的草坪花纹,令人赏心悦目。文章以西安亚建国际高尔夫俱乐部的球场为例,阐述冷季型草坪色彩工程营造和管理技术的运用。为类似草坪工程提供参考和借鉴。  相似文献   

冷季型草坪草在信阳地区生态适应性研究   总被引：1，自引：0，他引：1  

王亚莉  史洪中等 《信阳农业高等专科学校学报》2000,10(1):5-8

信阳农专植物科学系自 1993年以来 ,先后从国外引进冷季型草坪草种 5大类 ,35个品种 ,通过生态适应性研究 ,筛选出适合信阳生态条件的冷季草坪品种 16个 ,并已在信阳地区应用推广  相似文献   

果浆无菌大桶装冷却设备的设计   总被引：1，自引：0，他引：1  

张衍林  朱松德  贺红桦  郭予南  王光耀 《农业机械学报》2000,31(5):53-55

研究设计的果浆无菌大桶半夜冷却设备采用水作冷却介质,用偏心轮、连杆及摇杆组成平行四边形机构作为活动轨道,并与高低固定轨道配合,使大桶产生机械振动和左右摇动并向后移动,促进桶中心的热交换。解决了高温灭菌后充满率大于99.5%的大桶装果浆冷却十分困难的问题,保证了果浆的自然色泽和纯正口味,提高了产品质量。试验结果为1h使大桶装桃浆从98℃降至40℃以下,达到了冷却目的。  相似文献   

Influences of ultra‐violet (UV)‐blue light radiation on the growth of cotton. I. Effect on iron nutrition and iron stress response     

Von D. Jolley  John C. Brown  James C. Pushnik  Gene W. Miller 《Journal of plant nutrition》2013,36(3):333-351

Cool white fluorescent (CWF) light reduces Fe³⁺ to Fe²⁺ while low pressure sodium (LPS) light does not. Cotton plants grown under CWF light are green, while those yrown under LPS light develop a chlorosis very similar to the chlorosis that develops when the plants are deficient in iron (Fe). It could be that CWF light (which has ultra violet) makes iron more available for plant use by maintaining more Fe²⁺ in the plant. Two of the factors commonly induced by Fe‐stress in dicotyledonous plants‐‐hydroyen ions and reductants released by the roots‐‐were measured as indicators of the Fe‐deficiency stress response mechanism in M8 cotton.

The plants were grown under LPS and CWF light in nutrient solutions containing either NO₃‐N or NH₄‐N as the source of nitrogen, and also in a fertilized alkaline soil. Leaf chlorophyll concentration varied significantly in plants grown under the two light sources as follows: CWF+Fe > LPS+Fe > CWF‐Fe ≥ LPS‐Fe. The leaf nitrate and root Fe concentrations were significantly greater and leaf Fe was generally lower in plants grown under LPS than CWF light. Hydrogen ions were extruded by Fe‐deficiency stressed roots grown under either LPS or CWF light, but “reductants”; were extruded only by the plants grown under CWF light. In tests demonstrating the ability of light to reduce Fe³⁺ to Fe²⁺ in solutions, enough ultra violet penetrated the chlorotic leaf of LPS yrown plants to reduce some Fe³⁺ in a beaker below, but no reduction was evident through a yreen CWF grown leaf.

The chlorosis that developed in these cotton plants appeared to be induced by a response to the source of liyht and not by the fertilizer added. It seems possible that ultra violet liyht could affect the reduction of Fe³⁺ to Fe²⁺ in leaves and thus control the availability of this iron to biological systems requiring iron in the plant.  相似文献   

我国生鲜农产品物流模式分析和冷链流通标准化建设建议     

袁清 《安徽农业科学》2013,(23):9769-9772

在我国生鲜农产品物流现状的基础上,分析了我国生鲜农产品物流模式.根据我国现实情况,指出现阶段我国生鲜农产品冷链物流发展的关键问题.从冷链流通标准化建设考虑,应从提高生鲜农产品经营主体组织程度、应用先进的冷链物流技术、建立冷链物流信息系统、培养物流专业人才、健全冷链物流标准体系的角度出发,提出促进我国生鲜农产品冷链物流标准化建设的若干建议.  相似文献   

水果的冷藏保鲜     

秦桂林 《西南园艺》2005,33(6):35-37

水果冷藏保鲜是一种常见的后处理措施,本文概述了冷藏保鲜的基本原理、方法,冷库的卫生管理和节能方法.  相似文献   

Reaction of genotypes from several species of grain and forage legumes to infection with a French pea isolate of the oomycete <Emphasis Type="Italic">Aphanomyces euteiches</Emphasis>     

A. Moussart  M. N. Even  B. Tivoli 《European journal of plant pathology / European Foundation for Plant Pathology》2008,122(3):321-333

The susceptibility/resistance to Aphanomyces euteiches of various genotypes (cultivars and breeding lines) of several grain legume species was assessed in controlled conditions. A total of 279 genotypes from the major grain legumes grown in temperate climates (faba bean, chickpea, lentil, lupin and common vetch) and three other legumes frequently cultivated in France (French bean, clover and alfalfa) were screened with one pea-infecting isolate from France. Four different categories of susceptibility/resistance were identified among the legume species/cultivars tested with the pea A. euteiches isolate: (1) susceptible legume species (lentil, alfalfa, French bean) among which low levels of partial resistance was observed; (2) legume species including susceptible genotypes and genotypes with high levels of resistance (common vetch, faba bean and clover), (3) species with a very high level of resistance (chickpea) and (4) species displaying no symptoms (lupin). It is therefore important to consider pathogen-species and pathogen-genotype interactions when defining the host specificity of A. euteiches and considering the possible role of different legume species in increasing or decreasing the soil inoculum potential.  相似文献   

水分胁迫下几种冷季型草坪草抗旱性研究   总被引：10，自引：0，他引：10  

杨国伟  张秀清  苏东海  王力  张静  孙君社 《河南农业科学》2004,(2):38-42

研究了 3种冷季型草坪草的 4个品种在聚乙二醇渗透胁迫下叶片游离脯氨酸含量、过氧化物酶活性、过氧化氢酶活性随胁迫强度和胁迫时间的变化。结果表明 :随着聚乙二醇胁迫的加深 ,4个品种的游离脯氨酸含量比对照都有显著增加 ,过氧化物酶活性增大 ,而过氧化氢酶活性先上升后下降。其中Di eagle游离脯氨酸积累时间长 ,维持积累量大 ,并且能保持较高的活性 ,表明其具有强的渗透调节能力和自由基清除能力 ,因而具有最强的抗旱性  相似文献   

低温贮藏保鲜技术的发展概况   总被引：2，自引：0，他引：2  

王昱  李海燕  范杰英  姜晓莉  张世忠 《安徽农学通报》2009,15(16):227-230

本文叙述了低温贮藏保鲜技术的基本原理,包括动植物性食品低温贮藏原理。介绍了制冷技术、低温技术、低温贮藏的冷却冷冻保鲜技术、冷藏链的发展概况。最后针对实际存在的问题,提出了今后低温贮藏保鲜技术的发展建议。  相似文献