| 摘要: |
| 根据渭北旱塬农业生产和夏闲地现状，论证了渭北旱塬扩大复种开发夏闲地的必要性和可能性，并通过试验研究表明，虽然水分不足是扩大复种的主要限制因素，但只要因地制宜也可适度开发夏闲地（从三年四熟到一年二熟）。 |
| 关键词: 旱作农田，夏闲地，多熟种植 |
| DOI： |
| 分类号:S344.11 |
| 基金项目: |
|
| The Exploitation and Utilization of Summer Fallow Lands on Weiber Rainfed Highland |
|
Li Jun Wang Lixiang,Li Jun Wang Lixiang
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| Abstract: |
| The present situation of agricultural production and summer fallow land on Weibei Rainfed Highland can prove the necessity and possibility of expanding multiple cropping and exploitation of summer fallow land.Also,the field experiments indicated taht although water stress is a major constraint in expanding multiple cropping,it is possible to exploit summer fallow land (from 4 crops 3 years to 2 crops 1 year)in accordance with the local conditions. |
| Key words: rainfed farmland,summer fallow land, multiple cropping |
