| 北京地区果树害虫天敌昆虫种类名录初报 |
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| 引用本文： | 孙淑玲,王进忠.北京地区果树害虫天敌昆虫种类名录初报[J].北京农学院学报,1998,13(4):30-35. |
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| 作者姓名： | 孙淑玲 王进忠 |
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| 作者单位： | 北京农学院园艺系 |
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| 摘 要： | 从１９８９年至１９９８年，调查了密云、昌平、海淀、通州、门头沟等果区的害虫天敌，经鉴定计有１０５种，隶属于７目３３科．
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| 关 键 词： | 果树害虫 天敌 名录 |
Effects of Dietary Zinc and Excessive Calcium on Renal Histology of Broilers |
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| Yang zuojun\ Wang Xiaoxia et al.Effects of Dietary Zinc and Excessive Calcium on Renal Histology of Broilers[J].Journal of Beijing Agricultural College,1998,13(4):30-35. |
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| Authors: | Yang zuojun\ Wang Xiaoxia |
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| Abstract: | Broilers were fed excessive calcium(2.0%)and various levels of zinc to observe variations of kideny.The results indicated that the excessive calcium had effect on kidney of broilers significantly (P<0 01).But various levels of zinc affected the estent of renal damage.Excessive zinc weakened the estent of pathological change caused by excesive calcim. |
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| Keywords: | Zinc excessive calcium broilers renal histology |
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