Scientia Agricultura Sinica ›› 2007, Vol. 40 ›› Issue (10): 2274-2280 .doi: 10.3864/j.issn.0578-1752.at-2006-7737

• HORTICULTURE • Previous Articles     Next Articles

Study of Relativity of Soil Microbial Diversity and Cucumber Yield, Quality in Protected Cultivation

  

  1. 东北农业大学园艺学院
  • Received:2006-06-23 Revised:1900-01-01 Online:2007-10-10 Published:2007-10-10

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Abstract: Abstract: 【Objective】 To study the effect of cucumber planting years and cultivated modes on DNA sequence diversity of microbial community and relativity with cucumber yield and quality. 【Method】RAPD techniques were adopted to study the effect of cucumber planting years and cultivated modes on DNA sequence diversity of microbial community and relativity with cucumber yield and quality.【Result】 The results showed that the diversity index, richness and evenness index of microbial community which was in soil of continuous cropping cucumber for 2 years and 7 years decreased with increasing of planting years, and cucumber yield dropped evidently. However, in soil of crop rotation for 15, 18 and 21 years, though the planting years were longer, DNA sequence diversity and evenness of microbial community were both higher than those in soil of continuous cropping cucumber for 7 years. It showed that the rotation of crops is propitious to DNA sequence diversity and stability of microbial community, and also the vitamin C content of cucumber of rotation was higher than that of continuous cropping soil cultivation. DNA sequence diversity index of soil microbial community was positively correlated with cucumber yield and quality evidently.

Key words: RAPD, Diversity Index, Evenness Index, Yield, Relativity

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