UNUSUAL DISC HERNIATION IN A DOG

Unusual disc herniation was identified in a dog. Disc herniation was considered unusual because of its displacement into the vertebral endplate of the adjoining vertebra. Unusual disc herniation in this dog was compared with Schmorl's node in humans.     

草坪害虫的发生特点及其防治方法

本文报道了草坪害虫的发生特点及其防治方法。     

Bilateral neuroepithelial choristomas of the optic disc in a cynomolgus monkey (Macaca fascicularis): a case report

A 6-year-old intact male cynomolgus monkey of Chinese origin was received at the Sierra Biomedical Facility. While physical examination revealed good body condition with no abnormalities, routine ophthalmic examination revealed bilateral proliferative optic neuropathy involving the dorsal aspect of the optic disc. No changes were noted in the appearance of the lesions over 8 months, and fluoroescein angiography revealed no abnormalities other than obstruction of the view of the retinal vessels by the lesions. Histopathologic studies revealed characteristics consistent with a diagnosis of bilateral neuroepithelial choristoma.     

草坪草茎建植技术及管理

用草坪草茎建植草坪是草坪绿地无性繁殖的重要方法。改草皮铺植为草茎播植,并采用机械收集、加工草茎,贮存草茎,人工撒播,精细管理的方法繁殖草坪。这种方法人工费较少,运输量小,播种简单,繁殖系数高,成坪快,坪用性状好,成本低,值得推广应用。     

植生带草坪的建植及管理技术

:1997～ 1998年对植生带草坪的建植及管理技术研究表明 :选择草地早熟禾、翦股颖及多年生黑麦草按 5∶4∶1的比例混播制成植生带 ,采取床土覆沙、及时浇水、定期修剪、适当追肥、及时防除杂草和病虫害 ,建坪当年的草坪其密度、盖度、色泽等各项指标均可达到 5级标准     

马蹄金草坪的建植与养护技术

马蹄金属C3植物 ,具有相对较高的光饱和点 ,对光有较强的适应性 ,很适应云南气候环境 ,在云南广泛推广应用 ,为城市绿化增色不少。总结了 1990年至今对马蹄金草坪的建植与养护管理技术 ,为马蹄金草坪管理提供理论依据     

Detection of beet yellows virus in sugarbeet plants by enzyme-linked immunosorbent assay (ELISA)

Beet yellows virus can be detected in leaf extracts of infected sugarbeet plants by ELISA. The use of discs was studied and proved to be a valuable and qualitatively reliable method. Leaf material could be stored at 4^o or 22°C for at least six days without affecting the detection of this virus by ELISA. A dramatic decrease in ELISA values was found when leaf extracts were frozen.In an analysis of the distribution of virus over the plant it was found that young leaves present at the moment of infection and those which had still to develop after infection will contain virus. Symptoms produced by systemic virus invasion occur on the oldest leaves containing virus.Samenvatting Het bietevergelingsvirus kan op betrouwbare wijze met de ELISA methode in geïnfecteerde bieteplanten worden aangetoond. Een aanzienlijke vereenvoudiging van de procedure kan worden bereikt met de zogenaamde disc-method, waarbij intacte ponsstukjes in de putjes van de ELISA-plaat worden geïncubeerd. Hierbij komt voldoende virus uit de ponsstukjes voor ELISA vrij. Bladmateriaal kon op verschillende wijzen bewaard worden zonder dat de mogelijkheid om het virus aan te tonen achteruitging. Met bladextracten die ingevroren waren, werden echter slechte resultaten verkregen.In een analyse naar de verdeling van het virus over het loof bleek het virus voor te komen in de geïnoculeerde bladeren, in die bladeren die op het tijdstip van inoculatie minder dan de helft van hun uiteindelijke lengte bereikt hadden en in de bladeren die nog moesten verschijnen. De symptomen ontwikkelden zich op de oudste systemisch geïnfecteerde bladeren.     

草坪病害及其防治

本文介绍草坪草常见侵染性病害（ 真菌、细菌、病毒和线虫病的致病病原） 和非侵染性病害,论述了草坪病害流行条件,强调预防为主的综合防治策略。     

11种优良坪用禾草对禾草云斑病抗性的初步研究

１９９７～１９９８年选用１１种坪用禾草品种在自然条件下做了对禾草云斑病的抗性鉴定。结果表明,结缕草、细叶结缕草及狗牙根不发病,表现免疫;高羊茅抗病;草地早熟禾、紫羊茅、黑麦草及匍茎剪股颖发病较重,表现感病。     

9FQM1000型树枝秸秆粉碎机的设计

针对新型农业经济组织每年秸秆和废残树枝产量大、利用率低、传统焚烧易污染环境等问题,采用双通道喂入方式,运用盘式切碎加锤片粉碎的基本工作原理,对树枝秸秆粉碎机的结构和传动系统进行了设计,设计出能够对树枝秸秆进行精细粉碎的9FQM1000型树枝秸秆粉碎机并进行试制。样机试验表明,9FQM1000型树枝秸秆粉碎机组合粉碎结构可靠,生产效率为3 000 kg·h^-1。