对优良树种小胡杨2号开展区域造林试验的基础上，进一步开展耐旱性研究，主要通过盆栽试验，研究在持续干旱情况下，小胡杨2号应对干旱胁迫的机理，采用样本是2年生小胡杨，5月初从磴口移栽2年生实生苗至装好库布其沙漠沙土塑料盆，截杆40cm促新枝,正常浇水养护后，至8月底开始控水试验，每3天测定一次，直至叶片萎蔫无法测试，测定内容包括：\n
土壤含水量（土壤盒取样，3个重复）、叶片含水量（5个叶片每个处理）、叶片光合特性（3个重复每个处理）和生化特性（每个指标、每个处理取5g,-80°冷冻后测定，具体测定方法见植物学试验指导）。至叶片完全萎蔫共完成4次测定，土壤含水量丛20.08%降至0.98%，叶片含水量和相对含水量降低，叶片饱和亏缺增加，提高36.25%；随着干旱胁迫增加，小胡杨2净光合速率（A）降低，光合速率随光合有效辐射（PAR）增加，至700mmol m⁻² s⁻¹达到光饱和速率；生化指标丙二醛（MDA）和脯氨酸（POD）含量增加，植物器官在逆境下遭受伤害，发生膜质过氧化作用，丙二醛含量可以反映植物遭受逆境伤害程度，植物遭受逆境胁迫时，脯氨酸含量的增加可以降低细胞水势有利于细胞或组织持水，提高植物的抗逆能力。随着胁迫程度的增加，小胡杨 2 号叶片内POD含量持续上升，与对照相比，不同程度胁迫下POD含量分别增加了5.36%、17.06%、39.21%。", "ds_source": "
对优良树种小胡杨2号开展区域造林试验的基础上，进一步开展耐旱性研究，主要通过盆栽试验，研究在持续干旱情况下，小胡杨2号应对干旱胁迫的机理，采用样本是2年生小胡杨，5月初从磴口移栽2年生实生苗至装好库布其沙漠沙土塑料盆，截杆40 cm促新枝,正常浇水养护后，至8月底开始控水试验，每3天测定一次，直至叶片萎蔫无法测试。", "ds_process_way": "
土壤含水量（土壤盒取样，3个重复）、叶片含水量（5个叶片每个处理）、叶片光合特性（3个重复每个处理）和生化特性（每个指标、每个处理取5g,-80°冷冻后测定，具体测定方法见植物学试验指导）。至叶片完全萎蔫共完成4次测定。", "ds_quality": "
数据质量良好。", "ds_acq_start_time": "2018-01-01 00:00:00", "ds_acq_end_time": "2019-12-31 00:00:00", "ds_acq_place": "呼和浩特", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "login-access", "ds_total_size": 51840, "ds_files_count": 2, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "8299c763-2e9f-4bb8-a163-e4751ca1a8bb.jpg", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "8534e8f7-cbd5-4771-81d6-d524ffde0065", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.ZDYF.db1673.2022", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2022-02-18 14:33:27", "last_updated": "2025-06-30 11:29:08", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.ZDYF.db1673.2022", "i18n": { "en": { "title": "Study on stress resistance of Populus euphratica No. 2 (2018-2019)", "ds_format": "excel", "ds_source": "
On the basis of regional afforestation test on the excellent tree species of small poplar 2, further drought tolerance research, mainly through the potting test, to study in the continuous drought, small poplar 2 coping with drought stress mechanism, using the sample is a 2-year-old small poplar, transplanted from Dengkou in early May, the 2-year-old live seedling to the loaded Kubuqi Desert sandy plastic pots, cut off the pole 40 cm After normal watering and maintenance, we started the water control test at the end of August, and measured every 3 days until the leaves wilted and could not be tested.", "ds_quality": "
Data quality is good.", "ds_ref_way": "", "ds_abstract": "
On the basis of regional afforestation test on the excellent tree species of small poplar 2, further drought tolerance research, mainly through the potting test, to study in the continuous drought, small poplar 2 coping with drought stress mechanism, using samples are 2 years old small poplar, in early May, from Dengkou transplanted 2 years old seedlings to the loaded Kubuqi Desert sandy plastic pots, cut off the pole 40cm Promote new branches, after normal watering and maintenance, to the end of August to start the water control test, measured every 3 days, until the leaf wilt can not be tested, the measurement includes:\n
Soil water content (soil box sampling, 3 replicates), leaf water content (5 leaves per treatment), leaf photosynthetic characteristics (3 replicates per treatment) and biochemical characteristics (each indicator, each treatment to take 5g, -80 ° frozen determination, the specific determination method see botanical test guide). A total of four measurements were completed until the leaves were completely wilted, soil water content bush 20.08% to 0.98%, leaf water content and relative water content decreased, leaf saturation deficit increased, increased by 36.25%; with the increase of drought stress, the net photosynthetic rate (A) of small huayu2 decreased, photosynthetic rate increased with photosynthetically active radiation (PAR), to 700 mmol m -² s-¹ to reach the light saturation rate; biochemical indicators malondialdehyde (MDA) and proline (POD) content increased, plant organs suffered damage under adversity, the occurrence of membrane peroxidation, malondialdehyde content can reflect the degree of plant damage by adversity, plants suffered from the adversity of stress, the increase in proline content can reduce the cellular Water potential is conducive to cell or tissue water holding, improving the plant's resistance. With the increase of the degree of stress, the POD content in the leaves of small poplar No.2 continued to rise, and compared with the control, the POD content in different degrees of stress increased by 5.36%, 17.06% and 39.21%, respectively.
", "ds_time_res": "", "ds_acq_place": "Hohhot", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Soil water content (soil box sampling, 3 replicates), leaf water content (5 leaves per treatment), leaf photosynthetic characteristics (3 replicates per treatment) and biochemical characteristics (5g of each indicator, each treatment, -80° frozen and measured, see the botanical test guide for the specific measurement method). A total of four measurements were completed until the leaves were completely wilted.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "ds_topic_tags": [ "叶片含水量", "光合作用", "光合速率" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "呼和浩特" ], "ds_time_tags": [ 2018, 2019 ], "ds_contributors": [ { "true_name": "梁海荣", "email": "lkylhr@sina.com", "work_for": "内蒙古林业科学研究院", "country": "中国" }, { "true_name": "李家陶", "email": "958746449@qq.com", "work_for": "内蒙古林业科学研究院", "country": "中国" }, { "true_name": "刘雪锋", "email": "694390200@qq.com", "work_for": "内蒙古林业科学研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "梁海荣", "email": "lkylhr@sina.com", "work_for": "内蒙古林业科学研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "敏玉芳", "email": "myf@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "沙漠与荒漠化" }