Abstract: In order to find out the variations of soil nutrient content infarmlan ds of Guizhou, a survey of soil and fertilizer was conducted again in 1998, base d on the survey results of 1985.

 
  • 文摘:為了解近年來(lái)化肥施用量倍增后,貴州農田土壤養分含量的變化,在1985年土壤調查的基礎上,1998年再次進(jìn)行了土壤和肥料調查。
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