|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 开放式空气CO_2浓度升高对水稻土壤可溶性C、N和P的影响显示文摘采用FACE(Free air carbon dioxide enrichment)技术,研究了不同N施肥水平下,大气CO2浓度升高对水稻/小麦轮作中水稻土壤可溶性C、N、P的影响.结果表明,CO2浓度升高使土壤表层可溶性C含量增加,土壤5~15 cm的可溶性C含量倾向于降低,增加N肥施用(常规N处理)更易于使土壤可溶性C含量降低.CO2浓度升高使水稻土壤中的可溶性N含量降低,在低N处理和土壤表层降低幅度较大,N肥施用仍有提高的余地.CO2浓度升高使水稻成熟期土壤可溶性P含量增加,但是常规N处理下会降低水稻生长前期和土壤表层的可溶性P,增加N肥施用有利于水稻对P的吸收. | 马红亮 朱建国 谢祖彬 张雅丽 刘刚 曾青 | 2004 | 土壤2004，36，4： | 40 |
| 2 | 高CO_2浓度下根系分泌物的研究进展显示文摘根系分泌物是植物对大气CO2浓度升高响应的调节器,它能活化土壤养分元素、调节微生物区系组成,在根际微生态系统中扮演重要角色。本文综述了大气CO2浓度升高及其导致的温度上升引起根系分泌物数量和组成上的变化,讨论了这种变化与土壤微生物的关系和对全球C循环的贡献,并根据现状提出了今后的研究方向。 | 陈改苹 朱建国 程磊 | 2005 | 土壤2005，37，6： | 20 |
| 3 | Effects of Atmospheric CO_2 Enrichment, Applied Nitrogen and Soil Moisture on Dry Matter Accumulation and Nitrogen Uptake in Spring Wheat显示文摘Spring wheat (Triticum aestivum L. cv. Dingxi No. 8654) was treated with two concentrations of atmospheric COz (350 and 700 μmol mol-1), two levels of soil moisture (well-watered and drought) and five rates of nitrogen fertilizer (0, 50, 100, 150, and 200 mg kg-1 soil) to study the atmospheric CO2 concentration effect on dry matter accumulation and N uptake of spring wheat. The effects of CO2 enrichment on the shoot and total mass depended largely on soil nitrogen level, and the shoot and total mass increased significantly in the moderate to high N treatments but did not increase significantly in the low N treatment. Enriched CO2concentration did not increase more shoot and total mass in the drought treatment than in the well-watered treatment. Thus, elevated CO2 did not ameliorate the depressive effects of drought and nitrogen stress. In addition, root mass decreased slightly and root/shoot ratio decreased significantly due to CO2 enrichment in no N treatment under well-watered condition. Enriched CO2 decreased shoot N content and shoot and total N uptake; but it reduced root N content and uptake slightly. Shoot critical N concentration was lower for spring wheat grown at 700 μmol mol-1 CO2 than at 350 μmol mol-1 CO2 in both well-watered and drought treatments. The critical N concentrations were 16 and 19 g kg-1 for the well-watered treatment and drought treatment at elevated CO2 and 21 and 26 g kg-1 at ambient CO2, respectively. The reductions in the movement of nutrients to the plant roots through mass flow due to the enhancement in WUE (water use efficiency) and the increase in N use efficiency at elevated CO2 could elucidate the reduction of shoot and root N concentrations. | LIFUSHENG KANGSHAOZHONG | 2002 | Pedosphere2002，12，3： | 18 |
| 4 | 不同氮水平下CO_2浓度升高对小麦土壤可溶性C、N和P的影响显示文摘采用FACE(Free air carbon dioxide enrichment)技术,研究了不同N施肥水平下,大气CO2浓度升高对稻/麦轮作小麦季土壤可溶性C、N、P的影响.结果表明,高CO2使土壤可溶性C在小麦前期和0~5 cm土层降低,成熟期增加,对水稻和小麦不同轮作季土壤可溶性C的影响不同.在低N和常规N处理下,高CO2使小麦分蘖期土壤可溶性N含量分别增加17.2%和18.9%,在其他生长期,土壤可溶性N含量降低9.8%~63.0%,拔节期降低幅度最大分别为63.0%和50.4%,土层0~5 cm降低幅度>5~15 cm土层;小麦季和水稻季一样需要增加N肥施用量.CO2浓度升高增加了土壤可溶性P的含量,其中低N处理增加幅度高于常规N处理,研究表明小麦生长不会受到P养分的限制. | 马红亮 朱建国 谢祖彬 张雅丽 曾青 刘钢 | 2005 | 土壤2005，37，3： | 9 |
| 5 | 植物差异表达基因克隆技术及研究进展显示文摘随着分子生物学技术的深入发展,植物基因组研究已经由以全基因组测序为目标的结构基因组学转向以基因功能鉴定为目标的功能基因组学研究,目前分离并克隆差异表达基因已成为生命科学研究的热点.近些年来,国内外学者发展了多种分析差异表达基因的技术来研究植物在不同发育阶段、不同生理状态下的基因表达状况,掌握了生命活动过程中的重要信息.文章对建立在RNA水平上克隆植物未知差异表达基因的几种关键技术及其研究进展进行了综述,阐述了各技术的原理、技术路线、优缺点及相应的改进方法,并对它们在植物抗逆研究中的应用现状及前景作了展望. | 谢伟伟 王凭青 杨青川 刘博 李志中 | 2005 | 重庆大学学报(自然科学版)2005，28，12： | 5 |
| 6 | Effect of Saline Water on Cadmium Uptake and Remediability of Soil with Brassica Napus显示文摘 | Mohammad Mahdi Mohammadi Abdolmajid Liaghat Gholamreza Savaghebi | 2010 | Journal of Chemistry and Chemical Engineering2010，4，12： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员