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jing ning xian han di nong tian zuo shu mi du diao cha chu bao
Author(s): 
Pages: 119
Year: Issue:  11
Journal: XIANDAI NONGYE KEJI

Keyword:  旱地农田鼢鼠密度甘肃静宁;
Abstract: 应用地下鼢鼠堵洞等习性,采用鼠密度调查方法中的"有效洞口法",选择有代表性的样点,有效开展地下鼠密度调查.调查结果显示,当地旱地农田鼢鼠密度平均有效洞13.1个/hm2,洞口系数1.2,鼠密度15.7只/hm2,其中最低密度地域内有效洞6.3个/hm2,鼢鼠密度8.8只/hm2,最高密度地域内有效洞23.3个/hm2,鼠密度25.6个/hm2,发生程度属中度至中度偏重发生,局部小地域大发生.
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