甜菜覆膜栽培高产生理基础的研究

本文介绍了3年的覆膜栽培实验研究,其结果表明:覆膜栽培,可为甜菜生育创造良好的土壤环境。生育前期提高土壤含水量10.7～27.4%;0～25厘米耕层积温增加684.1℃;0～20厘米耕层速效氮提高8.0～26.7%,速效磷提高12.4～18.8%,速效钾提高7.3～27.9%,甜菜提早出苗8天左右,较直播甜菜早11天左右,叶面积指数(LAI)3.0时达郁闭状态,持续期增多25天,LAI最大值达4.9,高于直播0.8。总光合势增加36.7%,光合速率增加CO_20.57毫克/分米~2时以上,生长中心提早5天以上转至根部。在块根增长期,根部干物质积累强度(1.9克/株·日)提高0.36倍,总光能利用率为:1.84%,较直播甜菜高0.45%。在同等栽培条件下,覆膜甜菜平均单产为3439.1公斤/亩,较直播增产31.8%。     

作物轮作复种模式综合评价的AHP模型设计与应用

应用层次分析法构建了作物轮作复种模式综合评价的ＡＨＰ模型，对参试的２１个轮作复种模式的综合生产效益进行了评价，在评价分析的基础上，进而对２１个轮作复种模式按综合生产效益水平进行聚类与优选，筛选出了在试验条件下综合生产效益优势较明显的若干优化作物组合模式。     

甘薯辐射和组培相结合筛选突变体

本研究采用副照甘薯强奸民意苗，接种单节段，离体培养并筛选变异体。以三种不同基因型作副射材料。初步明确了辐射和组培结合过程中一些基本技术条件，如培养基、基因型、光照条件、组培条件下的辐照剂量等，初步获得薯皮色变异系，对线虫性糠腐病抗扩展的变异系。它比常规辐射育种可节省大量田间工作量，并能缩短育种击期，     

Economics of wastelands afforestation in India,a review

India has vast tracts of wastelands. Afforestation of these wastelands is one of the many alternative uses of such lands. Given the scarcity of capital in India, it becomes imperative to determine the economics and financial feasibility of wastelands afforestation projects. The studies reviewed in this paper deal with cost and financial feasibility analysis of wastelands afforestation projects in India. The main rationale behind this review is to examine the prospects of increasing investments in the afforestation projects. This also has a global significance, since afforestation augments carbon sequestration, which has become an exigency in view of externalities associated with global warming. The study uses review of existing literature and regression analysis as analytical tools. The review reveals that reclamation of wastelands through afforestation is not an expensive venture in India. Afforestation projects are financially viable even when no environmental benefits are taken into consideration. The results of the study suggest that polluting companies/countries should explore the possibility of investing in afforestation in India to gain carbon credits economically, once the parties to the Kyoto Protocol to the United Nations Framework Convention on Climate Change decide to approve it. The studies reviewed reveal that researchers have used different sets of criteria for financial feasibility analysis of the afforestation projects. Almost all the studies have ignored non-market benefits of afforestation projects. Such methodological differences need to be addressed in view of the increasing importance of plantations as carbon sinks. Some socioeconomic issues like investment in tree crops vis-à-vis agricultural crops, preference for mixed plantation and wastelands development as a means of resource development have also emerged from this review.     

用加边矩阵求解非齐次线性方程组的尝试

笔者在文（１）中用加边矩阵求出了齐次线性方程组的基础解系，在此基础上，本文进一步考虑求解非齐次线方程组的问题。文末也给出了一种用加边矩阵求解逆矩阵的方法。     

被征地农民生活水平不降低的维护措施

保持被征地农民实际收入水平不下降并有一定增长,必须成为其原有生活水平不降低的衡量标准.要达到此标准,则应从确保经济补偿收益、消除基本生活风险、增强收入获得能力等方面建立起对被征地农民的经济补偿和生活保障体系.     

新疆长输管道原油流动性改进剂的应用研究

新疆东部火烧山－北三台输油管道是我国西部一条高粘易凝原油输送管道，自投产以来一直处在超低输量下运行，１９９２年的输油量只有４０万ｔ（设计最小输量６８．３万ｔ／ａ）。由于输油量低，制约了原油外运，直接影响火烧山油田的生产，为了保证输油量，需要改变原低温流变性，针对火烧山原油特性，新疆石油局与浙江大学共同研制出ＥＰ源油流动性改进剂。通过室内试验及现场不同温度，不同加剂量的工业试验，对原油的主要物性进行     

曼地亚红豆杉离体培养及植株再生

以红豆杉带侧芽茎段为外植体进行离体繁殖.结果表明:在WPM、MS、B53种基本培养基中,WPM为红豆杉离体培养最适的基本培养基;初代培养的最适培养基为WPM+4.0mg·L-12-ip+30.0mg·L-1Ad;芽继代增殖的最适培养基为WPM+4.0mg·L-12-ip+1.0mg·L-1IAA;生根壮苗的最适培养基为1/2WPM+0.5mg·L-1IBA+0.1mg·L-1NAA.     

山羊血淋巴结的解剖学观察

对山羊血淋巴结的输入和输出管道进行了追踪解剖学观察，发现所观察到的山羊血淋巴结位于淋巴循环的径路上，过滤的是含有红细胞的淋巴液而不是血液，所观察到的山羊血淋巴结就是淋巴结。     

水雾旋喷装置研制

水雾旋喷装置是应水利、土木等工程实际应用需要而提出的研制项目。本文对所研制的水雾旋喷装置的工作原理，技术参数测试方法以及该装置的试验结果进行了阐述。