Acta Agriculturae Boreali-Sinica

ACTA AGRICULTURAE BOREALI-SINICA ›› 1997, Vol. 12 ›› Issue (1): 102-107. doi: 10.3321/j.issn:1000-7091.1997.01.021

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A Study on Density dependent Effect of the Experimental Population and Control Standard of Petrobia latens(M.)

Han Guizhong1, Liu Shuntong1, Chu Zhipeng1, Duan Aiju1   

  1. 1. Luoyang Institute of Agricultural Science, Luoyang 471002;
    2. Henan Agricultural University, Zhengzhou;
    3. Fangcheng County Seed Company, Fangcheng
  • Received:1996-03-03 Published:1997-03-28

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Abstract: A study on the effects of different population density of stone mite of Petrobia latens(Muller)on its longevity,propagation and migration.The results indicated that with the increase of population the density of Petrobia latens the hatchability of egg decreased propagative capability and longevity of female mite declined the death rate of larva and the migratory proportion of adult mite raised. The harmful density was 20-40 mites per wheat plant.The control standard was 1400 mites per 100 wheat stems turning green period and index of damage was 1.0% during turning green period and that is 6.5% respectively at that is 6700 at jointing stage.

Key words: Stone mite, Density dependent effect of population, Control standard, Index of damage

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Han Guizhong, Liu Shuntong, Chu Zhipeng, Duan Aiju. A Study on Density dependent Effect of the Experimental Population and Control Standard of Petrobia latens(M.)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1997, 12(1): 102-107. doi: 10.3321/j.issn:1000-7091.1997.01.021.

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