| 引用本文: | 杨莹攀,孙文君,付媛媛,等.水盐胁迫对早熟棉花品种“中棉619”幼苗生长的影响[J].灌溉排水学报,0,():-. |
| YANG Yingpan,SUN Wenjun,FU Yuanyuan,et al.水盐胁迫对早熟棉花品种“中棉619”幼苗生长的影响[J].灌溉排水学报,0,():-. |
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| 水盐胁迫对早熟棉花品种“中棉619”幼苗生长的影响 |
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杨莹攀,孙文君,付媛媛,等
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塔里木大学
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| 摘要: |
| 【目的】研究水盐胁迫对适于无膜种植的早熟棉种“中棉619”幼苗生长的耐盐、耐旱性的影响。【方法】试验在人工气候室内进行，共设置I1（1.0 ET）、I2（0.8 ET）、I3（0.6 ET）3个水分处理，和T1（50 mmol/L）、T2（100 mmol/L）、T3（150 mmol/L）3个盐分处理，并以1.0 ET无盐处理为对照（CK），研究了水盐胁迫对棉花幼苗株高、叶面积、根系生物量、叶绿素量（SPAD值）、光合参数及叶绿素荧光参数的影响。【结果】结果表明：当灌水定额相同时，棉花幼苗株高、叶面积、SPAD值、根鲜质量及根干质量随盐含量的增加而减小，而当盐分相同时棉花幼苗各项指标随灌水定额的增加呈先增加后减小的趋势；在水盐交互作用下， I2T1处理的棉花株高、叶面积、SPAD值、根鲜质量及根干质量，较CK处理分别增加了33.74%、29.79%、18.96%、128.70%、28.20%；I2T1处理的棉花光合参数及绿素荧光参数最优。【结论】从棉花幼苗生长及生理指标综合分析，灌水定额为0.8 ET、盐分50 mmol/L适于早熟棉种“中棉619”幼苗的生长。 |
| 关键词: 水盐胁迫;早熟棉花;幼苗;光合;叶绿素荧光 |
| DOI： |
| 分类号:S562；Q945.78 |
| 基金项目:国家重点研发计划子课题(2016YFC0400208)；兵团科技攻关项目(2018AB027)；新疆维吾尔自治区研究生科研创新项目(XJ2019G265)。 |
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| Effect of Water and Salt Stress on Seedling Growth of Early-maturing Cotton Variety "Zhongmian 619" |
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YANG Yingpan1, SUN Wenjun1, FU Yuanyuan2, WANG Hongbo1, CAO hui1, JIANG Fuchang1, WANG Xingpeng1
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1.Tarim University;2.Tarim Univercity
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| Abstract: |
| 【Background】Cotton is the longest industrial chain cash crop in Chinese cultivation industry. However, as the main cotton producing area-southern Xinjiang, the problem of residual mulch film in cotton fields has become more and more serious, the soil environment has deteriorated, which has seriously affected the growth of cotton and yield quality. Therefore, how to alleviate the damage of residual film in cotton fields has become a practical problem to be solved urgently in cotton production in southern Xinjiang. The new early-maturing cotton variety suitable for filmless cultivation,"Zhongmian 619", has been successfully planted in southern Xinjiang, providing an important way to solve the "white pollution" of cotton fields. Of course, the cotton planting mode has changed from drip irrigation under mulch to drip irrigation without mulch,led to a significant increase in ground evaporation, a significant increase in water consumption of cotton, and increased salt accumulation on the surface, which will cause drought and salt stress to occur simultaneously to varying degrees, which is not conducive to cotton seeds Germination and seedling growth. There are few research reports on the germination and seedling growth of early-maturing cotton planted without membrane. Therefore, to study the effects of water and salt stress on the growth, chlorophyll content (SPAD value), photosynthesis and chlorophyll fluorescein of early-maturing cotton seedlings, the aim was to find out the suitable irrigation quota, irrigation quota and salt conditions for the new varieties of early-maturing cotton "Zhongmian 619" for germination and seedling growth.To provide support for the promotion of filmless planting technology in southern Xinjiang. 【Objective】To study the effect of water and salt stress and drought tolerance of seedling growth of early maturing cotton "Zhongmian 619" suitable for membrane-free planting. 【Method】The experiment was carried out in an artificial climate room, with a total of three water treatments: I1 (1.0 ET), I2 (0.8 ET), and I3 (0.6 ET), and T1 (50 mmol/L) and T2 (100 mmol/L) , T3 (150 mmol/L) 3 salt treatments, and 1.0 ET salt-free treatment as a control (CK), studied the effects of water and salt stress on cotton seedling plant height, leaf area, root biomass, and chlorophyll content (SPAD value) , Photosynthetic parameters and chlorophyll fluorescence parameters. 【Result】 The results showed that when the irrigation quota was the same, the plant height, leaf area, SPAD value, root fresh weight and root dry weight decreased with the increase of salt content, when the salt content was the same, the indicators of cotton seedlings showed a tendency to increase and then decrease with the increase of irrigation quota; under the interaction of water and salt, the plant height, leaf area, SPAD value, root fresh weight and root dry weight of cotton treated with I2T1 increased by 33.74%, respectively, compared with CK treatment. 29.79%, 18.96%, 128.70%, 28.20%; the photosynthetic parameters and chlorophyll fluorescence parameters of cotton treated with I2T1 were the best. 【Conclusion】From the comprehensive analysis of cotton seedling growth and physiological indicators, an irrigation quota of 0.8 ET and a salinity of 50 mmol/L are suitable for the growth of seedlings of the early maturing cotton "Zhongmian 619". |
| Key words: water and salt stress; early maturing cotton; seedling; photosynthesis; chlorophyll fluorescence |
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