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人工授粉 [圖]

發(fā)布時(shí)間：2016-04-11 01:30:41 來(lái)源：科技日?qǐng)?bào) 作者：佚名責(zé)任編輯：羅伯特

　　眼下正值“鴨梨之鄉(xiāng)”河北省泊頭市二十五萬(wàn)畝梨樹(shù)盛花期，因梨花花期只有一周左右，當(dāng)?shù)毓r(nóng)忙著為梨樹(shù)進(jìn)行人工授粉。新華社記者朱旭東攝

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