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| 4种除草剂对皮燕麦、裸燕麦不同生育时期光合特性的影响 | |
| 引用本文： | 胡战朝,赵桂琴,刘欢,刘永刚,许维诚,陈建纲. 4种除草剂对皮燕麦、裸燕麦不同生育时期光合特性的影响[J]. 草原与草坪, 2012, 32(4): 44-49,55 |
| 作者姓名： | 胡战朝 赵桂琴 刘欢 刘永刚 许维诚 陈建纲 |
| 作者单位： | 1. 甘肃农业大学草业学院／草业生态系统教育部重点实验室／甘肃省草业工程实验室／中-美草地畜牧业可持续发展研究中心,甘肃兰州,730070 2. 甘肃省农业科学院植物保护所,甘肃兰州,730070 3. 榆中县良种场,甘肃兰州,730070 |
| 基金项目： | 现代农业产业技术体系，农业行业专项 |
| 摘 要： | 为探讨除草剂对燕麦光合特性的影响,采用完全随机区组设计,测定4种除草剂48%仲丁灵、40%二甲.辛酰溴、72%2,4-D丁酯和75%苯磺隆处理下皮燕麦品种陇燕3号(Avena sativa cv.Longyan No.3)和裸燕麦品种燕2号(Baiyan No.2)的叶绿素相对含量(SPAD)值和净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)及蒸腾速率(Tr)等光合指标。结果表明:4种除草剂均降低了皮、裸燕麦的SPAD、Pn、Gs、Tr和气孔限制值(Ls);4种除草剂对皮、裸燕麦的影响不同,其中48%仲丁灵和40%二甲.辛酰溴对光合作用影响较小,72%2,4-D丁酯和75%苯磺隆危害较大;皮、裸燕麦间对除草剂的反应存在差异,皮燕麦对4种除草剂的敏感性大于裸燕麦。 |
| 关 键 词： | 除草剂 防效 叶绿素含量 光合特性 燕麦 |
Effect of four herbicides on photosynthesis characteristics of covered and naked oats at different growth stages |
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| HU Zhan-chao,ZHAO Gui-qin,LIU Huan,LIU Yong-gang,XU Wei-cheng,CHEN Jian-gang. Effect of four herbicides on photosynthesis characteristics of covered and naked oats at different growth stages[J]. Grassland and Turf, 2012, 32(4): 44-49,55 | |
| Authors: | HU Zhan-chao ZHAO Gui-qin LIU Huan LIU Yong-gang XU Wei-cheng CHEN Jian-gang |
| Affiliation: | College of Pratacultural Science ,Gansu Agricultural UniversityKey Laboratory of Grassland Ecosystem, Ministry of Education / Pratacultural Engineering Laboratory of Gansu Province / Sino-U. S. Centers for Grazingland Ecosystem Sustainability Lanzhou 730070,China 2. Plant Protection Institute ,GAAS,Lanzhou,Gansu Province 730070, China 3. Improved Variety Farm in Yuzhong ,Lanzhou,Gansu Province 730070,China) |
| Abstract: | In order to determine the effect of four herbicides （48% Butralin,40% Bromoxynil octanoate plusMCPA-sodium, 72 % 2,4-D butylate and 75 % Tribenuron-methyl） on photosynthesis characteristics of oats, the indicators of chlorophyll content （SPAD）, net photosynthetic rate（Pn）, stomatal conductance（Gs）, intercellular（;02 concentration（Ci）and transpiration rate（Tr）of both covered oat and naked oat were tested under the com- pletely randomized block. The results showed that all the herbicides reduced SPAD,Pn,Gs,Tr,and Ls of bothoats. However, the influence of four herbicides to oats were different, the octanoate plus MCPA-sodium had smaller negative impact on photosynthesi 48% Butralin and 40% Bromoxynil s,the 72% 2,4-D butylate and 75% Tribenuron-methyl had strong negative impact. Response of oats to herbicides was different,the covered oat was more sensitive than the naked one. |
| Keywords: | herbicide weed control chlorophyll content photosynthesis characteristics oats |
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