桂东南旅游资源特色及其旅游文化的开发

旅游文化发展成为近年来旅游业新的增长点,旅游资源文化的正确定位和开发层次是提升旅游产品档次的关键。桂东南旅游资源文化内涵丰富,特色是侨乡风情文化、喀斯特———丹霞地质文化、自然生态文化和名人历史文化等。文章首先阐述旅游与文化的关系,进而论述旅游资源文化的内涵,然后深层次挖掘桂东南旅游资源文化,提出桂东南旅游资源文化发展构想。     

缺氧对甘蓝型黄籽与黑籽油菜发芽的影响

随机选取甘蓝型黄籽、黑籽油菜各20个品系,将萌发中的种子进行淹水缺氧处理,观察黄籽、黑籽品系耐湿性表现.结果表明,甘蓝型黄籽油菜的相对成苗率、相对苗高、相对苗重、活力指数低于黑籽油菜,单位电导率高于黑籽油菜.无论是黄籽油菜还是黑籽油菜,品种间的耐湿性差异都很大.电导率与活力指数之间有极显著的负相关,可用来快速筛选油菜耐湿性材料.     

“砸缸之智”与“让梨之贤”探析——学习加强和改进未成年人思想道德建设有感

本文阐述了当今培养未成年人思想道德建设的重要性。倡导人们学习中国古代孔融“让梨”精神和司马光“砸缸”救人的智慧。进而表明积极构建和社会三位一体的教育体系。努力创造未成年人健康成长的良好社会环境。     

建设新农村的重要举措:加强村级班子建设,努力推进依法治村

认真解决好依法治村问题,是建设新农村的重要举措。本文试从加强村级班子建设的角度,探讨新农村建设,推进依法治村的一些问题。     

The Effect of Lead and Zinc on Plant Growth and Chlorophyll Content of Holcus lanatus L.

Root length of Holcus lanatus L. declined rapidly with increasing lead and zinc concentrations in nutrient solution. In all used Pb and Zn concentrations root growth of genotypes coming from a Pb-Zn mine area, was greater than that of the control, suggesting that these genotypes evolved tolerance to Pb and Zn.
Negative correlation was also observed between chlorophyll content and increased heavy metal concentrations. The greater chlorophyll content found in tolerant genotypes, in different Pb and Zn concentrations, in comparison with the control, could be served to distinguish tolerant and non-tolerant genotypes.     

Dynamics of the Cumulation of Macroelements – Phosphorus, Potassium, Calcium and Magnesium During Development to Maturity of Soybean Seed

Dynamics of the cumulation of phosphorus, potassium, calcium and magnesium in developing seed of four soybean genotypes under the defined climatic conditions in the course of three years was observed. Samples were being taken at weekly intervals from the point at which the grain reached a size suitable to be analyzed up to the full maturity of the seed. By analyzing the results it was found out that the intense cumulation of the minerals tested took place during the stages III and IV of the seed development, that is, in the course of intense cumulation of dry matter and the most expressive metabolic activity in the seed. Investigation of the impact of climatic conditions provides evidence that cumulation of the tested macroelements has been favourably influenced by increased precipitation along with moderate air temperatures within the seed developing period. The highest content of the minerals found with the cultivar Maksimirka independently of the year investigated reveals that mineral cumulation in soybean seed is affected by the cultivar and genetic particularity.     

谈高层建筑疏散楼梯设计中的常见错误

本文对高层建筑疏散楼梯在设计中的一些错误提出了自己的观点及解决办法;阐述了疏散楼梯在设计中的重要性,必须引起设计者的足够重视。     

杉木第二代种子园子代测定效果分析

本文对福建省官庄林场杉木第二代种子园自由授粉子代试验林树高、胸径和材积等生长性状进行了研究。子代测定结果表明，参试家系间的效应显著；利用方差分析的结果，估算了杉木树高、胸径和材积的家系遗传力和单株遗传力，并以１０％、２０％的选择强度估算出杉木的遗传增益值。通过分析得出杉木各生长性状间有较高的相关性。依材积选择出４６个优良家系，用作造林，４年生时估计其遗传增益可达４１．３７％～５１．３７％。     

Identification of Heat Tolerance Linked Molecular Markers of Chinese Cabbage (Brassica campestris L.ssp. pekinensis)

Genetically stable population of recombination inbred line (RIL) was derived from a cross between a heat tolerant line 177 and a heat sensitive line 276 of Chinese cabbage (Brassica campestris L. ssp.pekinensis ) by single seed descent. The RILs were analyzed using isozyme, RAPD and AFLP techniques in order to find molecular markers that are linked to heat tolerance quantitative trait loci (QTL). The results of variance analysis of single factor indicated that there were 9 molecular markers closely linked with heat tolerance QTL, including 5 AFLP markers, 3 RAPD markers and 1 PGM isozyme marker. Total genetic contribution of these makers to heat tolerance was 46.7%. Five of the nine markers distributed in one linkage group,the remaining 4 markers were located in separate groups. Thus the 9 heat tolerance linked markers distributed in 5 independent locations in the genome of Chinese cabbage.     

苹果酸处理水稻种子对秧苗根系及抗寒性影响的初探

水稻种子经苹果酸处理后,淀粉酶过氧化氢酶和脱氢酶活性均有提高。其幼苗根系发达,根/茎叶比重增加。幼苗经5C冷处理后,超氧化物歧化酶活性和叶绿素含量虽表现出下降,但明显高于对照。丙二醛含量和电解质渗漏率比对照为低。苹果酸处理在一定程度上提高了水稻秧苗素质及抗寒能力。