罗布泊南部野双峰驼的分布与环境

在１９９５－１９９６年两年调查的基础上,我们又利用家驼队深入荒漠腹地,考察了罗布泊南部野双峰驼的分布和栖息环境,结果表明在罗布泊南部的湖岸区,阿尔金山北麓及山前丘陵地带均有野驼分布,库姆塔沙漠中部无野驼进入,但其西侧戈壁及丘间谷地为野驼南北迁徒的通道,冬季野驼主要集中活动在科什兰孜等罗布泊南岸及阿奇克谷地;夏季主要在山区北麓活动,所以应将该区域与上述分布区同归于一个分布区整体,即南北配置的景观复合     

国外蔬菜遗传资源的引进,研究与利用进展

１９７１～１９９６年从４０余个国家（地区）引进１４个科４８属７２种（包括变种）共１１４１０份蔬菜遗传资源,其中２０余种为国内稀有蔬菜,还有我国科研和生产急需的抗源材料、雄性不育系、耐热和耐低温等珍贵材料。根据我国不同地区的生态气候类型,与地方科研、生产单位结合对引进的５３４５份材料共同试种鉴定,筛选出４０余个优良品种在生产上直接推广利用,获得了巨大的经济效益。选出的品种中有７个通过了省（市）品种审（认）定,共推广面积２６１ｋｈｍ２。大批引进的蔬菜优异资源被全国育种单位广泛用于培育新品种,获得了重大的社会效益和经济效益。     

Wild fruit resources and exploitation in Xiaoxing’an Mountains

The ornamental characters, nutritious composition, edible value and medical value of thirteen kinds of major wild fruit resources in Xiaoxing’an Mountains Region were synthetically analyzed such asRosa spp.,Actinidia spp. and so on. The results showed that the wild fruit resources in this region had important garden ornamental value, edible value and medical value. A lot of good germplasm resources and honey plant resources hadn’t been effectively protected and enough utilized. The right way of appropriate arrangement and reasonable exploitation of wild fruit resources in this region should be benefit to get rid of economic crisis early in this region. (Responsible Editor: Zhu Hong)     

野生植物扁蓄的坪用价值研究

对3种野生草本植物进行了坪用栽培,详细观察研究了3种植物的物候期表现、生长习性和绿化效果。试验表明:扁蓄极耐严寒,对干旱、水涝、高温等逆境适应性强,抗污染能力强,保持绿色时间长,发挥绿化功能快,不择土壤,种植管理方便,可作为园林草坪绿化的优良地被植物。     

我国野生大麦种质资源的特色及其利用展望

综述了我国野生大麦的分布、种质资源特色,对我国野生大麦种质利用前景进行了展望.     

Dynamic model for the effects of K fertilizer on crop growth, K-uptake and soil-K in arable cropping. 2. Field test of the model

Abstract. The validity of the model described in Greenwood & Karpinets (1997) was tested against the results of single year, multi level K fertilizer experiments. Measurements of plant mass, %K in the plant and K activity ratio in soil had been made at harvest and at intervals during the growing season on spring wheat, summer cabbage and turnips. Reasonably good agreement was obtained between these measurements and simulated values when the two 'crop' parameters (defining the dependence of critical and maximum possible %K on plant mass) were adjusted for each crop. Also good agreement was generally obtained for plant weight and plant %K at harvest in less detailed experiments on 10 other crops. Values of the two 'crop' parameters for 12 of the crops were strongly correlated with one another suggesting that a single 'crop' parameter may be all that is required to define most inter-species differences in plant-K demand.
Simulations with the model indicate that, in central England, no response of 10 crops to K fertilizer would be likely on soils containing more than 170 mg of 1 M ammonium nitrate extractable-K/kg of soil and having clay contents of between 15 and 45%. Shortcomings of the model and opportunities for advance are discussed.
A simplified version of the model runs on the Internet at: http://www.qpais.co.uk/moda-djg/potass.htm     

野外昆虫与蚕种生产中的微粒子病防治

家蚕体内分离发现的 5种微粒子虫中 ,除家蚕微粒子虫 ( N osema bombycis)外未发现对家蚕具有较强致病性和胚传性的微粒子虫。野外昆虫中已有大量微粒子虫被发现 ,其中有些对家蚕也有很强的致病性和胚传性 ,但其原始寄主尚有诸多不明之处。所以 ,蚕种生产中防止野外昆虫微粒子虫对生产影响的根本途径在于控制家蚕微粒子虫污染的扩散和桑园治虫     

对朗乡林业局野生经济植物的调查

分析论述了朗乡林区野生经济植物的种类、蕴藏数量以及开发保护利用意见。     

高黎贡山自然保护区野生动植物资源现状及保护

在介绍高黎贡山国家自然保护区野生动植物资源现状的基础上，提出了保护野生动植物资源的对策。     

四川犍为县桫椤资源现状及利用对策

通过野外调查、实地踏勘，对四川犍为县的桫椤资源地理分布、数量进行了系统研究。提出目前存在的问题和解决的对策与措施，为进一步保护和利用楗为县桫椤资源提供依据。