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befair
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pj198811: ½ð±Ò+20 2013-12-04 23:01:07
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zhtear99: ½ð±Ò+1, Ìá³öµÄ½¨ÒéºÜºÃ¡£Ð´³öµÄ»°ÖÁÉÙµÃÈÃÆäËûÁìÓòµÄÈËÖªµÀ˵µÄÊÇʲô£¬ËäÈ»²»Ò»¶¨¶®½²µÄ¶«Î÷¡£ 2013-12-04 21:39:14
pj198811: ½ð±Ò+20 2013-12-04 23:01:07
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All the mineral contents of P, K, Mn, Cu and Zn as well the yields of pears and dates were lowest when comparing with control straws. Straw mulching treatment significantly increases the above-mentioned mineral contents and the yields of pears and dates. ÒòΪÊÇÍâÐУ¬ËùÒÔÀí½âÉϺܿÉÄÜÓÐÎó£º 1. ÀæÔæÊÇÀæºÍÔæÂ𣿻¹ÊǼ޽ӵÄʲôÐÂÆ·ÖÖ£¿ 2. ÖÐÎIJ¢Ã»ÓÐÌáLinyilizao£¬ÇëÂ¥Ö÷È·ÈÏ ¹©²Î¿¼£¬²»Íׯ®¹ý |

2Â¥2013-12-04 19:56:57
pj198811
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3Â¥2013-12-04 22:58:49
befair
Ìú¸Ëľ³æ (ÕýʽдÊÖ)
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4Â¥2013-12-05 09:09:34













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