首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3篇
  免费   0篇
林业   2篇
  1篇
  2021年   1篇
  2016年   1篇
  1993年   1篇
排序方式: 共有3条查询结果,搜索用时 15 毫秒
1
1.
2.
Preferential flow: A review of current knowledge Despite intensive research neither suitable methods of measurement, nor complete theoretical statements give an adequate account of preferential flow due to the exceptional complexity and variability of the soil system. In particular it is not possible to make predictions of preferential flow for a given soil due to observations and measurements. In this work we describe theoretical and technical problems of preferential flow and initiate ideas for future work in this field.  相似文献   
3.
Journal of Pest Science - Entomopathogenic nematodes (EPN) have great potential as biological control agents against root-feeding insects. They have a rapid and long-lasting mode of action, minimal...  相似文献   
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号