...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plant and Soil >Effect of cropping systems on soil chemical characteristics, with emphasis on soil acidification.
【24h】

Effect of cropping systems on soil chemical characteristics, with emphasis on soil acidification.

机译：耕作制度对土壤化学特性的影响，重点是土壤酸化。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effect of no-tillage cropping systems on soil chemical characteristics was studied in field trials in 1983-93 on a dark red Podzol, with double cropping systems of legumes, cereals, grasses or fallow with maize alone or with a legume. Legume cropping systems resulted in the greatest soil organic C gain and the highest effective cation exchange capacity (ECEC) to a depth of 17.5 cm. The increase was greatest in the 0-2.5 cm layer. Trifolium subterraneum systems resulted in the highest soil acidification at 2.5-7.5 and 7.5-17.5 cm depths. The rate of soil pH decrease at 2.5-7.5 cm depth under the T. subterraneum + Spergula arvensis/maize system was 0.1 units year-1. Differences in soil acidification affected soil ECEC. Soil exchangeable cation data indicated that nitrate leaching increased soil acidification. Maize yields were greatest in legume systems due to increased N supply.
机译：1983-93年在暗红色Podzol上的田间试验中研究了免耕种植制度对土壤化学特性的影响，该种植采用豆类，谷物，草或休耕作物与玉米单独或与豆类的双重种植。豆科作物种植系统在17.5厘米深度处产生最大的土壤有机碳增加量和最高的有效阳离子交换容量（ECEC）。在0-2.5厘米的层中增加最大。三叶草地下系统在2.5-7.5和7.5-17.5 cm的深度处导致最高的土壤酸化。在T.subterraneum + Spergula arvensis /玉米系统下，土壤pH在2.5-7.5 cm深度下降的速率为0.1单位年-1。土壤酸化的差异影响了土壤ECEC。土壤可交换的阳离子数据表明，硝酸盐淋洗增加了土壤酸化作用。由于氮供应增加，在豆类系统中玉米单产最高。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号