作 者 ：唐凤德,蔡天革,韩士杰*,黄丽荣
期 刊 ：生态学报 2009年 29卷 5期 页码：2294~2303
Keywords:biological agents, Pinus sylvestris var. mongolica, sandy land, survival, growth, physiological characteristics,
摘 要 ：采用Pt菌剂、ABT生根粉、HRC吸水剂和GGR 6植物生长调节剂等生物制剂，研究了不同生物制剂对2年生樟子松苗木田间试验的造林成活率、植株高度、单株生物量、细根量和盆栽试验苗木的叶片光合和水分利用效率等生理特征的影响。结果表明：(1) Pt3(3号菌剂) 、ABT (ABT生根粉)和HRC (HRC吸水剂)均显著地提高樟子松苗木的成活率，它们分别比对照处理苗木成活率高29.3%、23.6%和9.4%，而GRR (GGR植物生长调节剂)和Pt1(1号菌剂)处理苗木的造林成活率同对照处理苗木成活率差异不显著；(2) Pt3、ABT处理均显著地促进了苗木细根生长，分别比对照处理多34.72和15.18 cm，而HRC、CGR和Pt1同对照处理没有显著差异；回归分析表明细根量与苗木成活率呈显著正相关，说明生物制剂提高成活率是通过细根量的增加来实现的；(3) Pt3和ABT处理的苗木高度比对照多2.2 、1.5cm 和1.1cm，单株生物量干重分别大1.73、0.72g 和0.33g， 针叶长度、单个针叶面积和单株植株针叶数量分别多1.54和 0.096cm、0.188cm2和0.116cm2、31和23束；而Pt1和GGR处理对苗木高度和单株生物量影响不显著； (4) Pt3和ABT处理显著地提高了苗木叶片叶绿素含量和光合速率及水分利用效率等生理指标方面，而其它生物制剂对苗木生理指标影响不显著。生物制剂通过提高苗木生长量和增强生理活动提高樟子松沙地造林成活率。
Abstract:The experiments were conducted by planting in the field and pot-culturing of 2 year-old Mongolian Pine (Pinus sylvstris var. mongolica) seedlings processed with Pt mycorrhizal agents, ABT rooting powder, HRC water-absorbing agent and GRR plant development and growth regulator. The effect and function of the biological agents on survival rate of seedlings were studied by measuring height growth, biomass, roots, net photosynthetic rates, transpiration rates and water use efficiency. The results were as follows: (1) Pt3 (No. 3 mycorrhizal agent), ABT (ABT rooting powder) and HRC (HRC water-absorbing agent) had significantly increased survival rates of seedlings, which were 29.3%, 23.6% and 94% higher than that of controlled seedlings, respectively. But the GRR (GRR plant development and growth regulator) and Pt1 (No. 1 mycorrhizal agent) had no significant effects on the survival rate of seedlings comparing that of untreated seedlings; (2) Pt3 and ABT had enhanced the growth of the fine root(<2mm), which were 34.72 and 15.18 cm longer than that of controlled seedlings; the regression analysis had showed that fine roots quantity was positively related to seedling survival rate, which indicated that enhancing of survival rate of seedlings was achieved by increasing fine roots; (3) The heights of the average individuals with Pt3, ABT and HRC were 2.2, 1.5 and 1.1 cm, respectively higher than that of untreated seedlings. The dry biological mass of average seedling was 1.73, 0.72 and 0.33g heavier than that of average untreated seedling. Lengths of needles, the single leaf area and leaf quantity of a single seedling were 1.54cm and 0096cm, 0.188 and 0.116cm2 and 31 and 23 bunches, respectively, higher than those of untreated seedlings, Pt1 and GRR have no effects on the height and dry biological mass of average seedling; (4) Pt and ABT also improved effectively leaf physiological mechanism of seedlings and increased chlorophyll and photosynthetic capability and water use efficiency, and the other biological agents had no effects on the seedlings. The biological agents enhanced the survival rate of Mongolian pine (Pinus sylvestris var. mongolica) in the sandy land by increasing the growth and physiological characteristics of the seedling.
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