[1]童方平,方伟,马履一,等.水分胁迫下湿地松优良半同胞家系的光合特性响应研究[J].南京林业大学学报(自然科学版),2007,31(02):032-36.[doi:10.3969/j.jssn.1000-2006.2007.02.008]
 TONG Fang-ping,FANG Wei,MA Lij-yi,et al.Study on Response to Photosynthetic Characters of Slash Pine’s Half-sib Under Water Stress[J].Journal of Nanjing Forestry University(Natural Science Edition),2007,31(02):032-36.[doi:10.3969/j.jssn.1000-2006.2007.02.008]
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水分胁迫下湿地松优良半同胞家系的光合特性响应研究
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
31
期数:
2007年02期
页码:
032-36
栏目:
研究论文
出版日期:
2007-02-20

文章信息/Info

Title:
Study on Response to Photosynthetic Characters of Slash Pine’s Half-sib Under Water Stress
文章编号:
1000-2006(2007)02-0032-05
作者:
童方平123方伟1马履一1宋庆安23龙应忠2吴际友2易霭琴23程勇2
1. 北京林业大学森林资源与环境学院, 北京 100083; 2. 湖南省林业科学院, 湖南 长沙 410004; 3. 湖南省林木无性系育种重点实验室, 湖南 长沙 410004
Author(s):
TONG Fang-ping123 FANG Wei1 MA Lij-yi1 SONG Qing an2 3 LONG Ying zhong2 WU Ji-you2 YI Ai qin2 3 CHENG Yong2
1. College of Forest Resources and Environment Beijing Forestry University, Beijing, 100083; 2. Hunan Forestry Academy, Changsha 410004, Chinas; 3. Forest Tree Clonal Breeding Key Laboratory of Hunan Province, Changsha 410004, China
关键词:
湿地松 半同胞家系 光合特性
Keywords:
Slash pine Half-sib Photosynthetic character
分类号:
S718. 43
DOI:
10.3969/j.jssn.1000-2006.2007.02.008
文献标志码:
A
摘要:
<正>采用田间试验的方法,研究了太湖地区两种水稻土(爽水型水稻土和囊水型水稻土)稻季磷素向下渗漏流失情况及其与土壤Olsen-P浓度的关系。结果表明:在每季度30kg/hm2常规施磷处理水平下,两种水稻土土壤渗漏水的溶解怒磷(Diss0IvedP,简称DP)平均浓度均远超过了水体富营养化的闻值(0.02mg/L)。施磷处理能显著增加30cm深度滂漏水磷浓度。土壤磷素渗漏迁移流失的主要形态是颗粒态磷(ParticulateP,简称PP)。爽水型水稻土和囊水型水稻土各处理土壤渗漏水PP/TP的平均值分别为70.9%和67.0%。囊水型水稻土稻季的磷素渗漏流失量约为每季度469.7g/hm2大于安镇爽水型水稻土378.5g/hm。爽水型水稻土和囊水型水稻土土壤渗漏水中磷浓度各存在一个突变点(Change-point),两者分别为33.0mg/kg和26.3mg/kg,即当爽水型水稻土和囊水型水稻土土壤(0~10cm)中的Olsen-P浓度分别大干33.0mg/kg和26.3mg/kg时,土壤30cIn深度的渗漏水磷浓度将随着O1senP浓度的增加迅速增大。两种水稻土突变点的差异可能与它们的有机质和黏粒含量不同有关。
Abstract:
Through the tests of potted plants and measurement photosynthesis, this paper studies responses of photosynthetic character of slash pine~s half-sib under water stress. There are 7 families compared with general slash pine (ab. CK). The net photosynthesis, stomatal conductance, CO2 concentration inside the cell, transpiration, water utilization efficiency, carboxylation efficiency and photosynthetic quantum yield are measured under different water strees (slight water stress while soil water content is 55% to 60%, moderate water stress while soil water content is 35% to 40% and heavy water stress while soil water content is 20% to 25%). The law of photosynthetic character with water stress is that Pn, Cond, Ci, Tr, WUE, φ and CE of slash pine’s half sib drop with increased of water stress. The Pn, Ci, CE also drop line. It also shown that the wup go to up firstly, then drops after moderate water stress. TheCond and Tr tend to 0 with heavy water stress. The photosynthetic character value of slash pine’s halfsib is better than that of general slash pine. It is one of the physiological causes with fast growth and high yield of slash pine’s half-sib.

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更新日期/Last Update: 2013-05-20