The results are as follows:(1)The wheat at the north side of shelter?forest belt had a lower output. It is much lower than that on contrast district and also lower than that at the west side of forest?belt.

 
  • 結果表明:(1)林帶附近小麥產(chǎn)量明顯低于對照區產(chǎn)量,林帶對其北側小麥產(chǎn)量影響的程度大于對西側,且脅地范圍比西側的大;
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