土层厚度对紫色土坡地生产力的影响
文献类型：期刊论文
| 作者 | 唐家良 ; 汪涛; 朱波; 况福虹; 高美荣; 王小国
|
| 刊名 | 山地学报
 |
| 出版日期 | 2009-11-15 |
| 卷号 | 29期号:6页码:735-739 |
| 关键词 | 紫色土 土层厚度 生产力 临界土层 |
| 其他题名 | Effects of Soil Thickness on Productivity of Sloping Cropland of Purple Soil |
| 通讯作者 | 朱波 |
| 合作状况 | 国内 |
| 中文摘要 | 通过紫色土坡地土层厚度的调查与不同土层厚度的小区对比试验,研究紫色土薄层坡地的生产力特性。结果表明,约73%的紫色土坡耕地土层厚度为20～60cm。土层厚度是紫色土生产力的基本限制条件。土层越薄,作物株高、生物量和产量愈低,生产力愈低;土层越厚,生物量、产量愈高,生产力愈高,土层厚度的影响在玉米季尤为突出,20cm、40cm小区夏玉米产量仅为60cm小区的50%、74%,为80cm小区的28%、40%,100cm小区的23%、34%。当土壤厚度超过60cm,小麦、玉米的株高、生物量及根重差异不显著,而土壤蓄水可抵御紫色丘陵区连续20d的夏旱,因此,可初步判定60cm土层为紫色土生产力临界土层。60cm以上厚度的紫色土可维持基本稳定的生产力水平。 |
| 英文摘要 | Soil survey and field comparison experiments on soil thickness were conducted to study productivity characteristics of sloping cropland of purple soil.Results showed 73% of cropland of purple soil distributes in 2060 cm soil.Soil thickness is basic limiting condition for purple soil.The thinner the soil is,lower the crop height,biomass,yield and productivity will be.On the contrary,thicker soil had higher productivity.Soil thickness impacted on summer maize more prominently.Maize yields in plots of 20 and 40 cm were only 50% and 74% of those in 60 cm plot,28% and 40% in 80 cm plot,23% and 34% in 100 cm plot,respectively.However,if soil thickness is more than 60 cm,there were no significant differences on crop height,biomass and root weight of both wheat and maize between different treatments of soil thickness.Meanwhile,the cropland with more than 60 cm thick soil will resist the continuous drought for 20 days in summer.So,the soil thickness of 60 cm would be a critical thickness for purple soil to maintain stable productivity on hillslope. |
| 分类号 | S157 |
| 收录类别 | CSCD |
| 资助信息 | 中国科学院知识创新工程项目(KSCX2-YW-N-46-11);国家支撑计划课题(2008BAD98B05) |
| 语种 | 中文 |
| CSCD记录号 | CSCD:3705214 |
| 公开日期 | 2010-09-15 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/1953]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 推荐引用方式 GB/T 7714 | 唐家良,汪涛,朱波,等. 土层厚度对紫色土坡地生产力的影响[J]. 山地学报,2009,29(6):735-739. |
| APA | 唐家良,汪涛,朱波,况福虹,高美荣,&王小国.(2009).土层厚度对紫色土坡地生产力的影响.山地学报,29(6),735-739. |
| MLA | 唐家良,et al."土层厚度对紫色土坡地生产力的影响".山地学报 29.6(2009):735-739. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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