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水分脅迫及復(fù)水對水稻冠層結(jié)構(gòu)的補(bǔ)償效
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Effects of Water Stress and Rewatering on the Structure of Rice Canopy
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    通過盆栽和測坑試驗(yàn)，研究了水分脅迫及復(fù)水對水稻冠層結(jié)構(gòu)的補(bǔ)償影響。結(jié)果表明：水分脅迫在抑制水稻莖稈、葉片、葉面積延伸生長的同時，能有效地誘導(dǎo)冠層結(jié)構(gòu)，為旱后復(fù)水補(bǔ)償效應(yīng)的產(chǎn)生提供條件。旱后復(fù)水促進(jìn)了后期穗節(jié)的伸長、延緩后期葉片衰老速率、苗后期脅迫使作物對再次受旱的適應(yīng)能力增強(qiáng)。但補(bǔ)償效應(yīng)是有條件的，苗后期重旱和拔節(jié)初期輕旱補(bǔ)償效應(yīng)最佳，應(yīng)避免兩階段連旱和拔節(jié)期重旱。

    Abstract:

    Research was carried out to determine the compensation effects of water stress and rewatering on the structure of rice canopy by pot and test-pit experiments. The results showed that water stress inhibited the number of leaves and leaf area, and effectively induced the rice canopy structure that was beneficial to the compensation effect of post-drought watering. By post-drought watering, the panicle nodes were elongated, senescence speed of leaves was restrained, and rice adaptabilities to next drought were increased. The compensation effects of rewatering are best after heavy drought at late stage of seedlings and light drought at early stage of jointing. Continuous drought by two rice growth stages and heavy drought at jointing stage should be avoided.

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郝樹榮,郭相平,張展羽.水分脅迫及復(fù)水對水稻冠層結(jié)構(gòu)的補(bǔ)償效[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(3):52-55. Effects of Water Stress and Rewatering on the Structure of Rice Canopy[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(3):52-55.

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