论文部分内容阅读
,Ecological effect analysis of pumpkin and oil sunflower intercropping in arid area of northwest Heb
【机 构】
：
College of Agronomy, Agricultural University of Hebei, Baoding 071001, China“,”Department of Horticu
【出 处】
：
中国高等学校学术文摘·农学
【发表日期】
：
2009年3期
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