渠道水力最优断面的程序设计及绘图

利用ActiveX Automation技术将Visual BASIC与AutoCAD链接，实现了常用渠道的水力最优断面设计及绘图的自动化，可明显提高渠道设计及绘图的工作效率。     

川东鸭茅的生产试验研究

在影响川东鸭茅种子产量的诸多因素中，播种量和行距是主要因素之一。本试验采用的行距是30、60、90cm，10m^2小区的播种量分别为10、15、20g，进行2因子9处理3重复的生产试验。结果表明，组合A2B3的种子产量最高，达799g／10m^2,极显著高于其它组合。因此，建议种植川东鸭茅采用行距90cm、播种量0．67kg／667m^2。     

沙尘暴应急监测方法研究

在沙尘暴应急监测方法研究中,通过对总悬浮颗粒物采样仪器及各种采样参数的研究确定和降尘采样器的研制,制定出沙尘暴应急监测方法。     

NaCl胁迫对4种豆科牧草萌发的影响

为研究盐渍化对4种牧草种子盐胁迫下发芽成苗的影响,探索不同牧草种子盐胁迫下的萌发表现,试验借鉴农作物研究的理论和方法,并在实验室条件下用不同浓度的NaCl溶液对种子进行处理,并观察其萌发特性,以期为生产实践提供有用的依据,减少在生产中的损失,提高草业生产的经济效益。1     

棘豆属植物的危害性及其控制对策初探

棘豆属植物对草地畜牧业的危害性主要表现在：与优良牧草竞争水肥、光照及空间，使草地植物学成分简化，生物多样性减少，抗逆性下降，草地退化加速，使用年限缩短，生产率和利用率降低。同时引起家畜中毒、繁殖性能减弱及育种改良难度增大。认为目前棘豆控制应从草地农业生态系统的整体出发，以生态学理论为指导，生态工程控制为基础，生物控制为中心，物理防治、科学管理及政策引导为辅助和补充手段，兼顾开发利用，化学防治为应急措施的综合控制体系。     

Demography of Abutilon theoprasti and Setaria faberi in three crop rotation systems

Field experiments were conducted to characterize the demography of Abutilon theophrasti and Setaria faberi in a conventionally managed 2‐year (maize/soya bean) rotation, and in 3‐year (maize/soya bean/triticale + red clover) and 4‐year (maize/soya bean/triticale + lucerne/lucerne) rotations managed with 72% and 79% lower herbicide inputs respectively. Rates of weed seedling recruitment, seedling survival and adult plant fecundity were determined for populations in each phase of each rotation and used to calculate annual rates of weed population change, Δ. In both years of the study, Δ for A. theophrasti populations declined or remained stable in all three rotation systems. Despite greater rates of seedling survival and fecundity in maize and soya bean in the 3‐ and 4‐year rotations, increases in Δ for A. theophrasti populations were prevented in these systems because of low fecundity in triticale and low seedling survival and fecundity in lucerne. For Setaria faberi populations, Δ remained stable in the 2‐year rotation, increased in the 3‐year rotation in both years, and increased in the 4‐year rotation in 1 year. The results of this study indicate that when herbicide use is reduced, rotations that include triticale and lucerne can facilitate the suppression of A. theophrasti. Rotations that include lucerne can contribute to restraining S. faberi population growth, given adequate levels of seedling mortality in this crop.     

三峡库区农村沼气综合利用途径与思考

三峡库区资源丰富,但库区农村存在资源利用不合理、能源紧缺的情况.库区的气候及资源是发展沼气的有利条件.沼气是一项投资少,见效快,一次投资长期受益的好项目;是能够解决库区农村燃料短缺,提高用能品质,促进农民增收节支的有效途径,并且是保护生态改善农村生活环境,促进库区农村生态经济可持续发展的有效举措.     

Small intestine and small colon neuropathy in equine dysautonomia (grass sickness)

The number of neurons in the coeliacomesenteric ganglia and the myenteric and submucosal plexuses of the jejunum, ileum and small colon, and the pathological changes induced in them, were studied in various types of equine dysautonomia. In all forms of dysautonomia, severe and extensive neuron loss and damage occurred in the ileum. In acute and subacute dysautonomia, jejunal neuron loss and damage were severe, but in chronic cases significantly less loss or damage occurred. The damage followed the same pattern in the small colon but it was always less obvious than in the jejunum. The distribution of the damage was uniform within a segment of the intestine. In fatal cases of dysautonomia, the clinical severity and duration of illness seems, in most instances, to be related to the amount of neuronal disruption occurring in the jejunum. Severe disruption results in acute/subacute dysautonomia, while milder damage leads to the chronic form.No case of dysautonomia was encountered in which enteric neuron loss and damage occurred without significant neuronal disruption also occurring in the coeliacomesenteric ganglia.Ileal neuronal damage and loss are not invariably worse than that in the jejunum, and the possible reasons for this, together with the relationship between neuronal damage and possible causes of dysautonomia, are discussed.Abbreviations H&E haematoxylin and eosin Deceased. Formerly of the Moredun Research Institute, 408 Gilmerton Road, Edinburgh, EH17 7JH, UK     

蜂胶高生物活性黄酮组分的研究

本文探讨了蜂胶总黄酮中最具活性的黄酮类物质的提取分离、官能结构特征与功能关系、可能的功效,进而提出了如何看待蜂胶总黄酮含量高低的问题.