| 土壤水分对黄秋葵苗期生长及光合作用的影响 |
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| 引用本文： | 刘志媛,党选民,曹振木.土壤水分对黄秋葵苗期生长及光合作用的影响[J].热带作物学报,2003,24(1):70-72. |
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| 作者姓名： | 刘志媛 党选民 曹振木 |
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| 作者单位： | 1. 华南热带农业大学园艺学院,海南,儋州,571737
2. 中国热带农业科学院园艺所,海南,儋州,571737 |
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| 摘 要： | 以黄秋葵幼苗为材料。研究了不同土壤相对含水量(SRWC)(80％，60％，40％，20％)对其光合作用和生长的影响。结果表明：SRWC为60％时，植株生长最健壮，叶片的净光合速率高于其它处理：SRWC为40％时，植株日均净光合速率仅次于SRWC为60％条件下生长的植株，且高于其它处理，生长也未受到显著抑制；SRWC为20％时，黄秋葵的生长和光合作用均受到显著抑制：SRWC为80％时，植株细长，根冠比较小。因此认为，黄秋葵苗期适宜的SRWC为40％-60％。
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| 关 键 词： | 黄秋葵 苗期生长 光合作用 土壤水分 土壤相对含水量 |
| 修稿时间： | 2001年10月10 |
Effects of Soil Water Content on Growth and Photosynthesis of Okra Seedlings |
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| Liu Zhiyuan,Dang Xuanmin,Cao Zhenmu.Effects of Soil Water Content on Growth and Photosynthesis of Okra Seedlings[J].Chinese Journal of Tropical Crops,2003,24(1):70-72. |
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| Authors: | Liu Zhiyuan Dang Xuanmin Cao Zhenmu |
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| Institution: | Liu Zhiyuan 1 Dang Xuanmin 2 Cao Zhenmu 2 |
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| Abstract: | Effects of different soil relative water contents(SRWC,80%,60%,40%,20%)on growth and photosyn thesis of okra seedlings were studied.The results showed that the growth and the net photosynthetic rate(Pn)of seedlings under60%SRWC (T2)conditions were highest among the treatments.Although the Pn of the plants ex posed to40%SRWC (T3)decreased after9:30am,their daily Pn was only slightly lower than that of T2but high er than that of T1under80%SRWC,and the plant growth of the T3was not inhibited.The plants grown under20%SRWC were depressed greatly in growth and photosynthesis.Therefore,the optimum SRWC for okra seedlings was40%~60%. |
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| Keywords: | okra soil water content growth photosynthesis |
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