| 梁萍,张永清,张萌,高艳梅,王丹,严翻翻,合佳敏,王慧娟.不同盐碱胁迫条件下PAM施用深度对藜麦生长及产量的影响[J].干旱地区农业研究,2023,(5):130~137 |
| 不同盐碱胁迫条件下PAM施用深度对藜麦生长及产量的影响 |
| Effects of PAM application depth on the growth and yield of quinoa under different salt\|alkali stress |
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| DOI：10.7606/j.issn.1000-7601.2023.05.14 |
| 中文关键词: 藜麦 盐碱胁迫 PAM 施用深度 生长 产量 |
| 英文关键词:quinoa saline\|alkali stress PAM application depth growth yield |
| 基金项目:国家自然科学基金(NSFC-31571604) |
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| 中文摘要: |
| 以‘陇藜4号’为试验材料，采用根管土柱栽培的方式，研究了不同程度盐碱胁迫（S1：轻度盐碱胁迫；S2：中度盐碱胁迫；S3：重度盐碱胁迫）条件下土壤调理剂PAM施用深度（PAM0-10：距地表0~10 cm；PAM10-20：距地表10~20 cm；PAM20-30：距地表20~30 cm；PAM0-30：距地表0~30 cm）对藜麦根系生长、叶片渗透调节物质含量、植株生物量及产量的影响。结果表明：在PAM施用深度为0~10 cm时，轻度盐胁迫处理藜麦的根长、生物量及产量指标较对照组（S0：不加入盐碱和PAM）分别高出35.71%、15.48%和4.60%，表明藜麦具有较强的耐盐能力。当盐碱胁迫增加到一定程度（S2和S3处理）时，藜麦的形态指标有显著下降趋势，与对照组处理相比重度盐胁迫藜麦的根长、生物量下降幅度最大，平均分别下降了53.72%和62.99%，但在同等重度盐碱胁迫程度时，PAM0-10处理能够缓解盐碱对藜麦生长产生的胁迫作用，与对照组相比藜麦的根长和生物量分别降低了39.31%和45.42%。综合各项指标，盐碱胁迫条件下不同PAM施用方式对藜麦各生长指标的影响均表现为表层集中施用（PAM0-10）处理的效果最佳（P<0.05）。隶属函数分析显示，不同处理对藜麦生长的缓解程度表现为：S1>S2>S3，PAM0-10> PAM0-30> PAM10-20> PAM20-30，说明在实际栽培过程中采用表层（0~10 cm）集中施用PAM的方式对盐碱胁迫下藜麦生长的缓解效果最为明显。 |
| 英文摘要: |
| Taking Longli No.4 as the experimental material, the effects of soil conditioner PAM application depth (PAM0-10: 0~10 cm from the surface, PAM10-20: 10~20 cm from the surface, PAM20-30: 20~30 cm from the surface, PAM0-30: 0~30 cm from the surface ) on the root growth, leaf osmotic adjustment substance content, plant biomass and yield of quinoa under different degrees of saline\|alkali stress (S1: mild saline\|alkali stress, S2: moderate saline\|alkali stress, S3: severe saline\|alkali stress ) were studied by root canal soil column cultivation. The results showed that when the depth of PAM application was 0~10 cm, the root length, biomass and yield indexes of quinoa under mild salt stress were 35.71%, 15.48% and 4.60% higher than those of the control group (S0: no saline\|alkali and PAM), respectively, indicating that quinoa did have strong salt tolerance. When the saline\|alkali stress increased to a certain extent (S2 and S3 treatment), the morphological indexes of quinoa showed a significant downward trend. Compared with the control group, the root length and biomass of quinoa under severe saline\|alkali stress decreased the most, which decreased by 53.72% and 62.99% respectively. However, under the same degree of severe saline\|alkali stress, PAM0-10 treatment could alleviate the stress effect of saline\|alkali on the growth of quinoa. Compared with the control group, the root length and biomass indexes of quinoa decreased by 39.31% and 45.42%, respectively. Based on the comprehensive indexes, the effects of different PAM application methods on the growth indexes of quinoa under different saline\|alkali stress conditions showed that the effect of surface centralized application (PAM0-10) was the best (P<0.05). The membership function analysis showed that the growth of quinoa was alleviated under different treatment conditions as follows: S1>S2>S3, PAM0-10>PAM0-30>PAM10-20>PAM20-30, indicating that in the actual cultivation process, the method of concentrated application of PAM (0~10 cm) on the surface layer had the most obvious mitigation effect on the growth of quinoa under saline\|alkali stress. |
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