Zhang Xingyi Liu Xiaobing Sui Yueyu Zhang Shaoliang Zhang JiumingLiu Huanjun Stephen J. Herbert.EFFECTS OF ARTIFICIAL TOPSOIL REMOVAL ON SOYBEAN DRY MATTERACCUMULATION AND YIELD IN CHINESE MOLLISOLS[J].Soybean Science,2006,25(02):123-126.[doi:10.11861/j.issn.1000-9841.2006.02.0123]
人为剥离黑土层对大豆干物质积累及产量的影响*
- Title:
- EFFECTS OF ARTIFICIAL TOPSOIL REMOVAL ON SOYBEAN DRY MATTERACCUMULATION AND YIELD IN CHINESE MOLLISOLS
- Keywords:
- Chinese Mollisols; Water and soil loss; Yield ; Soybean
- 文献标志码:
- A
- 摘要:
- 通过田间试验 ,进行人为剥离黑土层, 模拟研究了不同水土流失强度对大豆干物质积累及产量的影响。研究结果表明 ,在拥有 30cm 黑土层的 6 度坡耕地上 , 表土流失掉 10cm 对大豆干物质积累没有明显影响。然而当黑土层流失超过 10cm , 大豆干物质积累量随流失的增加而减少 。黑土层流失 5cm 、10cm 后, 未对大豆产量造成显著影响 ,仅分别降低 3. 1%和 3. 2 %;流失 20cm ,大豆产量下降了 33. 2%;黑土层全部流失即 30cm 后,产量下降了 59. 2%, 表明黑土水土流失对大豆生产危害极其严重 。试验也表明施用有机肥可适当减轻水土流失对大豆产量的影响。
- Abstract:
- Present studies investigated the effects of artificial topsoil removal on soybean dry matter accu-mulation and yield in a black soil field with 6°slope and 30 cm topsoil layer. Dry matter accumulation wasnot affected when 10 cm topsoil was removed, and significant reduction was observed while topsoil removalexceeded 10 cm. Seed yield was only reduced at 3. 1 %and 3. 2 %by 5 cm and 10 cm removal ,respective-ly , while 33. 2%and 59. 2% reduction was observed in 20 cm and 30 cm removal treatment. It indicatedthat soil erosion will result in a serious yield reduction in soybean, and manure application could alleviatethe yield loss.
参考文献/References:
1 田雨.“北大仓” 已退化为第 2 个黄土高原[ J] . 河北国土资源,2005,(7):44 - 44
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备注/Memo
项目来源:中国科学院东北地理与农业生态研究所前沿领域项目和黑龙江省科技攻关项目(GC03B301)