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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (12): 132-138.doi: 10.11924/j.issn.1000-6850.casb15110024

Special Issue: 玉米 小麦

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Soil Microflora Change During Integrated Protection Cultivation of Wheat-maize Rotation

Quan Xin, Yang Yanyan, Liang Juan, Yang Lirong, Wu Chao, Xue Baoguo   

  1. (Institution of Plant Protection, Henan Academy of Agricultural Sciences/IPM Key Laboratory in Northern-South of the Ministry of Agriculture/Henan Key Laboratory for Control of Crop Diseases and Insect Pests, Zhengzhou 450002)
  • Received:2015-11-04 Revised:2016-04-14 Accepted:2016-01-25 Online:2016-04-27 Published:2016-04-27

Abstract: The authors analyzed the quantity and diversity of soil microbe such as bacteria, fungi and actinomycetes in wheat-maize rotation rhizosphere soil under different protection cultivation patterns and planting years. The diversity indices at different growth stages of wheat and maize in 5 years were analyzed by the methods of plate counting and SPSS statistical software. The results showed that microbial populations in the rhizosphere soil were positively correlated with the growth of wheat and maize. The results of integrated protection cultivation showed that tillage could increase the population bacteria and actinomycetes, while rotary tillage could increase the population of fungi, deep scarification could reduce fungi population, and straw mulching could increase the amount of microbial biomass. Long-term rotation of wheat and maize resulted in the gradual decrease and uneven distribution of microflora and affected microbial diversity index. Nevertheless, the microbial diversity index increased in the fifth year during wheat jointing period and maize seedling stage.

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