引用本文: 张冉，韩博，杨蔚，唐敏，任健，许文花，马向丽. 遮阴对建植初期混播草坪草光响应曲线的影响. 草业科学, 2019, 36(10): 2507-2515. doi: shu

Citation: ZHANG R, HAN B, YANG W, TANG M, REN J, XU W H, MA X L. Effect of shading on light response curve of mixed lawn grass during the initial stage of establishment. Pratacultural Science, 2019, 36(10): 2507-2515. doi: shu

遮阴对建植初期混播草坪草光响应曲线的影响

张冉 ^1, ,
韩博 ^1, ,
杨蔚 ^2, ,
唐敏 ^1, ,
任健 ^1, ,
许文花 ^1, ,
马向丽 ^{1,
,}

1.
BG视讯 yunnannongyedaxuedongwukexuejishuxueyuan，yunnan kunming 650201
2.
hongyunhonghejituankunmingjuanyanchang，yunnan kunming 650202

作者简介: 张冉(1996-)，女，四川营山人，在读硕士生，主要从事牧草种质资源与利用研究。E-mail: ;

通讯作者: 马向丽,

基金项目:BG视讯云南省重点研发计划项目子课题(2018BB001-03)；国家自然科学基金(31601997)；云南省基础研究计划面上项目(2019FB044)

摘要: 本研究以混播草坪草为试验材料，研究了不同遮阴处理(CK、50%、70%)对高羊茅(Festuca arundinacea)和多年生黑麦草(Lolium perenne)的叶绿素含量及光响应曲线的影响，以期为研究遮阴条件下草坪草耐阴性的内在机理及养护管理提供依据。结果表明: 1)遮阴处理下高羊茅的叶绿素a、类胡萝卜素含量显著升高，叶绿素b含量显著降低(P < 0.05)；而多年生黑麦草的叶绿素a、叶绿素b含量显著降低，类胡萝卜素含量显著升高(P < 0.05)。2)高羊茅和多年生黑麦草的净光合速率(P_n)及气孔导度(G_s)随光强增加而升高；但高羊茅的P_n及G_s随遮阴强度增加而降低，多年生黑麦草则相反。3)遮阴处理显著降低了高羊茅的最大净光合速率(A_max)、光补偿点(LCP)及光饱和点(LSP) (P < 0.05)，而多年生黑麦草则相反。4)综合分析认为，高羊茅通过降低生理活动速率来适应荫蔽胁迫，而多年生黑麦草则使叶绿素的合成与分解处于较低的动态平衡来适应荫蔽胁迫，其中多年生黑麦草具有更强的耐阴性。在城市荫蔽环境下的混播草坪，可适当增加混播草坪中多年生黑麦草的比例以提高草坪的外观质量。

关键词:

English

Effect of shading on light response curve of mixed lawn grass during the initial stage of establishment

Ran ZHANG ^1, ,
Bo HAN ^1, ,
Wei YANG ^2, ,
Min TANG ^1, ,
Jian REN ^1, ,
Wenhua XU ^1, ,
Xiangli MA ^{1,
,}

1.
college of animal science and technology, yunnan agricultural university, kunming 650201, yunnan, china
2.
kunming cigarette factory of hongyunhonghe group, kunming 650202, yunnan, china

Corresponding author: Xiangli MA,

Received Date: 2019-01-05
Available Online: 2019-10-01

Abstract: In this study, the effects of different shade treatments(CK, 50%, and 70%) on the chlorophyll content and light response curves of Festuca arundinacea and Lolium perenne were studied using mixed turf grass. The objective of this study was to provide a basis for studying the internal mechanism of shade tolerance and maintenance management of turfgrass under shading conditions. The results indicated that:1) The content of chlorophyll a and carotenoids of F. arundinacea increased significantly under shade treatments,whilst the contents of chlorophyll b decreased significantly (P < 0.05). The content of chlorophyll a and chlorophyll b of L. perenne decreased significantly.The content of carotenoids increased significantly (P < 0.05); 2) With the increasing light intensity, the net photosynthetic rate (P_n) and stomatal conductance (G_s) of F. arundinacea and L. perenne both increased. With the increasing shading intensity, the P_n and G_s of F. arundinacea decreased, the change trends of L. perenne were the opposite; 3) The maximum assimilation rate (A_max), light compensation point (LCP) and light saturation point (LSP) of F. arundinacea significantly reduced under the shade treatments (P < 0.05), while the change trends of L. perenne were opposite. 4) Comprehensive analysis showed that F. arundinacea could adapt to shade stress by reducing its physiological activity rate, while L. perenne could adapt to shade stress by keeping the synthesis and decomposition of chlorophyll in a low dynamic balance. Moreover, L. perenne had stronger shade tolerance than F. arundinacea. In the shading environment of the cities, the sowing proportion of L. perenne could be increased appropriately to improve the visual quality of the mixed turf under shade conditions.

Key words:

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图 1 BG视讯不同遮阴梯度下高羊茅叶绿素含量

Figure 1. Chlorophyll content of Festuca arundinacea under different shading conditions

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图 2 不同遮阴梯度下多年生黑麦草叶绿素含量

Figure 2. Chlorophyll content of Lolium perenne under different shading conditions

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图 3 不同遮阴梯度下高羊茅气孔导度对不同光强的响应

Figure 3. Response of the stomatal conductance of Festuca arundinacea to different light intensity under different shading conditions

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图 4 不同遮阴梯度下多年生黑麦草气孔导度对不同光强的响应

Figure 4. Response of the stomatal conductance of Lolium perenne to different light intensity under different shading conditions

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图 5 BG视讯不同遮阴梯度下高羊茅净光合速率对不同光强的响应

Figure 5. Response of the net photosynthetic rate of Festuca arundinaceaBG视讯 to different light intensities under different shading conditions

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图 6 BG视讯不同遮阴梯度下多年生黑麦草净光合速率对不同光强的响应

Figure 6. Response of the net photosynthetic rate of Lolium perenneBG视讯 to different light intensities under different shading conditions

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表 1 遮阴梯度

Table 1. Shade intensity

处理 Treatment	方法 Method
对照 Control	全光照 Full lighting
50%遮阴 Shade 50%	2层黑网遮阴 Two layers of black net shade
70%遮阴 Shade 70%	3层黑网遮阴 Three layers of black net shade

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表 2 光响应参数

Table 2. Optical response parameters

植物种 Plant species	处理 Treatment	最大光合速率 Maximum assimilation rate/ [μmol·(m²·s)^–1]	光补偿点 Light compensation point/ [μmol·(m²·s)^–1]	光饱和点 Light saturation point/ [μmol·(m²·s)^–1]
高羊茅 Festuca arundinacea	对照 Control	10.30 ± 0.82a	27.73 ± 0.57a	234.04 ± 0.68a
	50%遮阴 Shade 50%	7.91 ± 0.43ab	20.19 ± 0.35b	85.42 ± 0.53b
	70%遮阴 Shade 70%	5.58 ± 0.43b	17.14 ± 0.36b	90.86 ± 0.49b
多年生黑麦草 Lolium perenne	对照 Control	4.67 ± 0.43b	23.71 ± 0.52b	119.37 ± 0.34c
	50%遮阴 Shade 50%	4.99 ± 0.25b	38.22 ± 0.64a	208.49 ± 0.58a
	70%遮阴 Shade 70%	8.22 ± 0.39a	39.17 ± 0.66a	187.32 ± 0.60b
同列不同小写字母表示同种不同处理间差异显著 (P < 0.05)。　Different lowercase letters within the same colunm indicate significant difference between different treatments in the same species at the 0.05 level.

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遮阴对建植初期混播草坪草光响应曲线的影响

作者简介: 张冉(1996-)，女，四川营山人，在读硕士生，主要从事牧草种质资源与利用研究。E-mail: ;

通讯作者: 马向丽,

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Effect of shading on light response curve of mixed lawn grass during the initial stage of establishment

Corresponding author: Xiangli MA,

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