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第卷第期中国生态农业学报
12 4 Vol. 12 No. 4
2 0 0 4 年 1 0 月 Chinese Journal of Eco Agriculture Oct. , 2004

不同养分与水分管理对水稻植株根系形态及其活力的影响
杨长明杨林章欧阳竹
(中国科学院南京土壤研究所南京 210008) (中国科学院地理科学与资源研究所北京 100101)
摘要室内盆栽试验研究不同养分与水分管理模式对水稻植株根系形态及其活力的影响结果表明,干湿交替模
式和控制水分灌溉模式采用厩肥+ 化肥配施处理水稻植株根系平均活跃吸收面积分别比单施化肥处理高 19. 3 %
3 2
和 28 2 % ;平均根系活力分别高 23. 7 %和 37. 9 %。而连续淹水模式则削弱有机与无机肥配施对水稻植株根系形态
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及其活力的改善效果。厩肥+ 化肥配施处理可显著提高水稻中后期植株根表磷酸酶活性,尤以控制水分灌溉模式
采用有机与无机肥配施比单施化肥处理高 44. 7 %。
关键词水稻根系形态根系活力养分与水分管理
Effects of different nutrient and water regimes on the morphology and activity of rice root system. YANG Chang Ming ,
YANGLin Zhang (Nanjing Institute of Soil Science , Chinese Academy of Sciences , Nanjing 210008) ,OUYANG Zhu ( Institute of
Geographical Sciences and Natural Resources Research , Chinese Academy of Sciences , Beijing 100101) , CJEA ,2004 ,12(4) :82
~85
Abstract The effects of different nutrient and water treatments on the root morphology and activity of rice plant in pot experiment
were studied. The results indicate that in alternate wetting and drying model (AWD) and controlled irrigation model (DRA) , the
root active absorption areas of rice plant by bined applications of chemical fertilizers anic manure are 19. 3 % and
28. 2 % respectively larger , and the root activities (RA) are 23. 7 % and 37. 9 % respectively higher , pared