试述高校团组织如何做好“推优”工作”

“推优”是党赋予共青团组织的一项光荣任务。进一步提高对“推优”工作的认识、坚持将对团员青年学生教育和培养贯穿于“推优”工作的全过程、严格“推优”程序、坚持民主集中制原则以及摆正关系、找准位置是高校共青团组织做好“推优”工作的基本要求。     

低糖无花果果脯的研制

在研究无花果设施栽培与加工的基础上,以无花果为主料,转化糖替代部分蔗糖.通过抽空渗糖工艺,研制出一种低糖保健型无花果果脯.它既有无花果的独特风味又具有很高的营养保健功效,是老少皆宜的食品.     

土壤因素对根系导水率影响的研究进展

根系导水率研究在SPAC系统水分传输应用中有重要意义。通过对土壤水分、盐分、养分、温度、质地和寄生生物等多种土壤因素影响根系导水率研究现状的论述与分析,对相关研究进行了总结,认为今后在研究多种环境因素对根系导水率影响的同时,还应考虑时间(包括天、月、年等不同时间尺度)对根系导水率的影响;为推动根系导水率研究的发展,还需要对现有的测定手段进行改进和创新,以方便、快捷、准确地测定根系导水率。     

大葱采种方式对分蘖率的影响

根据大葱不同采种方式对分蘖率的影响,提出大葱网棚采种方式隔离效果最好,宜用于繁育原种;应用隔离采种方式进行良种繁育时,隔离区必须超过1 000 m.     

The reaction between phosphate and dry soil. I. The effect of time, temperature and dryness

Phosphate (P) was added to soil in solution. The soil was air-dried or freeze-dried and then incubated at a range of temperatures for periods of up to 110 d. The rate of the continuing reaction between the P and soil was measured using the null-point method, and by measuring the amount of desorption induced by filter paper impregnated with iron oxide (Pi test). The reaction between soil and P continued in both air-dried and freeze-dried soil, albeit more slowly than in moist soil. Freezing the soil, whether moist or dry, virtually stopped the reaction. These results are consistent with the hypothesis that the continuing reaction between P and soil involves a solid-state diffusive penetration of the soil particles by the sorbed P ions. They also indicate that the common practice of storing soil air-dry, even for short periods at low temperature, will not preserve the P status of the soil as at sampling. It was estimated that for a sample of soil which remained moist at 25°C for 100d after the addition of 335 μg P g⁻¹ soil, before being sampled and stored air-dry at 4°C for 16 years, the measured P_i test value would be about 15 μg P g⁻¹. This compares with 46 μg P g⁻¹ which is the estimated Pⁱ test value measured on the same day as sampling. When samples cannot be analysed for P status immediately following sampling, they should be stored at the lowest convenient temperature, preferably below 0°C.     

天山云杉枯落物持水特性的空间异质性

对新疆天山北部由西至东5个地点(昭苏、新源、呼图壁、天池、奇台)天山云杉枯落物持水特性进行研究。结果表明:昭苏、新源、呼图壁、天池和奇台天山云杉枯落物总储量分别为(9.00±0.47)、(8.48±0.32)、(8.92±0.52)、(11.10±0.33)、(10.74±0.30)t.hm-2。5个地点天山云杉枯落物的持水量、持水率随浸泡时间的增加均呈递增趋势,且半分解层的值均大于未分解层的;枯落物吸水速率随浸泡时间的增加呈递减趋势且半分解层吸水速率均大于未分解层。天山云杉枯落物的持水量与浸泡时间呈对数关系,其函数表达式为Q=kln(t)+p;吸水速率与浸泡时间呈幂函数关系,表达式为Y=kt;持水率与浸泡时间呈对数关系,函数表达式为S=kln(t)+p。5个地点天山云杉枯落物的总持水量由大到小的排序为天池、呼图壁、新源、昭苏、奇台,并且天池地区的总持水量与其他4个地区有明显差异。枯落物平均持水率由大到小的排序为呼图壁、新源、天池、昭苏、奇台,其中奇台与呼图壁和天池间有明显差异,奇台与新源和昭苏间无差异。     

一次漂亮的飞蝗『歼灭』战--2005年广西来宾市东亚飞蝗应急防治掠影

由于气候变异、食料丰富和虫源不断积累等因素的影响,2005年秋(8-10月)广西来宾市兴宾、象州、武宣发生严重的东亚飞蝗灾害.     

统一订购，分校区验收分编模式的探索与思考

介绍了高校图书馆图书采编工作新模式,即统一订购分校区验收分编图书的基本要求、基本做法,并分析了这一模式的优点和不足。

     

利用C基因组对高杆野生稻和宽叶野生稻基因组的比较分析(英文)

[Objective] Genomic in situ hybridization (GISH) was used to study the relationship between the two CCDD genomes of Oryza alta and Oryza latifolia. [Method] Total DNA of Oryza officinalis (C-genome) was used as a probe for genomic in situ hybridization on metaphase chromosomes from Oryza alta and Oryza latifolia, respectively. [Result] Under certain post-hybridization washing stringencies, C- and D-genome could be distinguished in CCDD genome type; there were huge differences in some CC chromosomes of Oryza alta, Oryza latifolia, and Oryza officinalis. The genome of Oryza latifolia was more original. [Conclusion] Comparative analysis of the Oryza species with identical genome type may facilitate to elucidate the possible approaches to plant genome evolution and species evolution.