摘要
在日光温室条件下,研究了不同连作年限土壤对黄瓜生理特性的影响。结果表明,不同连作年限土壤对黄瓜光合速率、植株生长特性和产量均有极为显著的影响。在开始种植黄瓜的几年内,黄瓜的光合速率、株高、叶片数和生产力均维持在较高水平;随着连作年限延长,黄瓜的光合速率、株高、叶片数和产量明显降低;连作4a以后,黄瓜的生理障碍开始有明显表现。
This paper dealt with the effect of continuous cropping year on physiological characteristics of cucumber in sunlight greenhouse.The results showed that there were significant difference in photosynthesis ratio,growth characteristics and productivity in continuous cropping years.At the beginning several years,photosynthesis ratio,plant height,leaf number and productivity of cucumber maintained higher level.As continuous cropping years increasing,the photosynthesis ratio,plant height,leaf number and productivity of cucumber decreased obviously.After continuous cropping 4 years,the physiological obstacle of cucumber was occurred.
出处
《西北植物学报》
CAS
CSCD
2003年第8期1398-1401,共4页
Acta Botanica Boreali-Occidentalia Sinica
基金
中国科学院知识创新项目(KZCX1-06-02-01)
国家科技攻关项目资助(2001BA508B17)
关键词
连作
生理特性
黄瓜
日光温室
continuous cropping
physiological characteristics
cucumber
sunlight greenhouse
