| 摘要: |
| 为探究起垄内嵌式栽培基质配比对甜椒生长和根区温度的影响，在日光温室中以土壤栽培为对照，共设置4种不同基质配比（体积比）：草炭：蛭石：珍珠岩=1：1：1、2：1：1、3：1：1和3：2：1。结果表明：根区基质温度受两侧土壤温度的影响，与两侧土壤温度呈极显著相关；不同基质配比根区温度日变化规律不一致，但日平均温度无显著差异；4种基质配比的根区昼夜平均温差均比土壤低1.0~2.0℃。基质配比对不同生育阶段甜椒的株高、茎粗和SPAD值没有显著性影响，但2：1：1配比处理能显著提高甜椒的干物质量。4种基质栽培的甜椒产量均高于土壤，其中2：1：1配比处理产量最高为6.46 kg/m2，比土壤高103.1%。总结而言，起垄内嵌基质栽培能够提高根区温度的缓冲能力和稳定性；不同基质配比对根区温度影响不显著，但草炭：蛭石：珍珠岩=2：1：1基质配比能够显著促进甜椒干物质量积累和产量的提高，更适合应用于日光温室甜椒生产。 |
| 关键词: 日光温室 起垄内嵌栽培 基质配比 甜椒 根区温度 |
| DOI：10.11841/j.issn.1007-4333.2019.01.14 |
| 投稿时间：2018-05-04 |
| 基金项目:"十三五"国家重点研发计划项目课题（2016YFD0801001）；中央级公益性科研院所基本科研业务费专项资金项目 |
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| Effects of substrate composition on the root zone temperature of soil ridged substrate-embedded cultivation and sweet pepper growth |
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LI Zonggeng, YANG Qichang, LIU Wenke, ZHA Lingyan, ZHANG Yubin
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| (Institute of Environment and Sustainable Development in Agriculture/Key Laboratory of Energy Conservation and Waste Management of Agricultural Structures of Ministry of Agriculture and Runal Affairs, Chinese Academy of Agricultural Sciences, Beijing 100081, China) |
| Abstract: |
| Soil ridged substrate-embedded cultivation (SSC) with different substrate ratios (peat:vermiculite:perlite=1:1:1, 2:1:1, 3:1:1, and 3:2:1) were used for planting sweet pepper in Chinese solar greenhouse to explore its effect on the growth and root zone temperature of sweet pepper. The results showed that root zone substrate temperature was significantly affected by soil temperature on both sides. The substrate temperature daily variations of different substrate ratios were different, but the difference of diurnal average temperature was not significant. The temperature differences between day and night of SSC with four substrate ratios were approximately 1.0-2.0℃ lower than soil. The substrate ratio had no significant effect on the plant height, stem diameter and SPAD of sweet pepper in different growth stages. But 2:1:1 substrate ratio significantly increased the dry mass of sweet pepper compared with other substrate ratios. The yield of sweet pepper cultivated in SSC with different substrate ratios was all higher than that of sweet pepper cultivated in soil, among them 2:1:1 substrate ratio had the highest yield (6.46 kg/m2) and was 103.1% higher than that of the soil. In conclusion, SSC improved the buffer capacity and stability of root zone temperature. Substrate ratio had no significant effect on root zone temperature. However, 2:1:1 substrate ratio could remarkably improve the dry mass and yield of sweet pepper, indicating that 2:1:1 substrate ratio was more suitable for the production of sweet pepper in solar greenhouse. |
| Key words: Chinese solar greenhouse SSC substrate ratio sweet pepper root zone temperature |
