| 甲宗霞,牛文全,张璇,范文涛.根际通气对盆栽番茄生长及水分利用率的影响[J].干旱地区农业研究,2011,29(6):18~24 |
| 根际通气对盆栽番茄生长及水分利用率的影响 |
| Effects of rhizosphere ventilation on the qrowth and water use efficiency of tomato |
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| DOI：10.7606/j.issn.1000-7601.2011.06.04 |
| 中文关键词: 根际通气 盆栽番茄 植株生长 根系生长 水分利用率 |
| 英文关键词:rhizosphere aeration potted tomato plant growth root growth water use efficiency |
| 基金项目:“十二五”863计划课题(2011AA100507)；农业转化资金项目(2010GB2G000470) |
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| 中文摘要: |
| 为探索适宜作物生长的水气环境,在3种土壤水分水平下,采用50%土壤孔隙率的1.6,1.2,0.8,0.4,0五种通气系数等处理方法,研究了根际通气对盆栽番茄生长指标与根系生长,以及水分利用率的影响。结果表明:适宜的土壤水分与适宜的通气量相结合对番茄生长具有显著的促进作用,通气处理促进了番茄植株的生长,提高了番茄的根系活力和水分利用率,当土壤水分为70%~80%田间持水量,通气系数为0.8时,番茄株高日增长率、茎粗、叶面积指数及叶片叶绿素含量分别比对照提高14.34%、22.39%、23.95%、29.98%;根系活力达最大值〔13.440 mg/(g·h)〕,与未通气处理的〔8.319 mg/(g·h)〕比较,增大了61.55%;番茄水分利用率比对照提高了16.97%。 |
| 英文摘要: |
| Aimed to explore proper moist ure env ironment for the crop, under three kinds of soil moisture, five treat-
ments of soil aeration (1.6，1.2，0.8, 0.4 and 0 tube ventilation quantity of 50% porosity of soil ) were installed and
the physiological indices of tomato and water use efficiency were studied . The results showed that the adequate combina-tion of soil moisture and soil ventilation quantity could increase the plant growth， root vitality and water use efficiency markedly. Under 70%~80% field capacity and 0.8 tube soil ventilation quantity，the gnowth rate, stem diameter, LAI and chlorophyll content were 14.34%, 22.39%, 23.95% and 29.98% higher than the control respectively and the root vitality reached the highest value of 13. 440 mg/ (g·h)，being 61. 55% higher than that ［8. 319 mg/ (g·h)］ of the control. In this condition, the water use efficiency of tomato was 16.97 % higher than the control. |
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