| 摘要: |
| 根据冷凉风沙区农业生产的特点 ,针对推广应用机械化保护性耕作要解决的关键问题 ,试验研究了不同机械化保护性耕作技术体系在提高产量、防治风沙等方面的效果。试验结果表明 ,北方冷凉风沙区实行免耕留茬机械化保护性耕作 ,耕作层贮水量比传统对照高 5 0 %～ 6 7% ,达到 76 80m3 ·hm-2 ,满足春小麦 30 0 0kg·hm-2 产量的水分需求。机械化免耕留茬保护性耕作抗风蚀能力比传统对照高 33 1%～ 4 8 3%。每hm2 增效达 112 0元左右。实践证明 :实行“机械化收获留高茬→休闲→播前喷施除草剂或浅松机械除草→免耕施肥播种→机收”的机械化保护性耕作工艺体系适合北方冷凉风沙地区 |
| 关键词: 保护性耕作 技术体系 冷凉风沙区 |
| DOI：10.11841/j.issn.1007-4333.2004.03.067 |
| 修订日期：2003-11-13 |
| 基金项目:科技部发展生态农业治理沙漠化土地技术研究与示范项目 |
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| Experimental study on the mechanization of conservation tillage system in cold, windy and sandy areas |
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| Abstract: |
| The characteristic of agriculture production in cold, windy and sandy areas was discussed and the key problem that must be resolve in order to extend the conservation tillage technology was researched. The effects of different conservation tillage system on the increase of yield and reduce windy erosion were studied. The result of experiment showed that in cold, windy and sandy areas, mechanization of conservation tillage can be developed to increase water 50 %-67% compared to the traditional tillage, reach to 7?680?m 3/hm 2, and enough for the spring wheat growing. Compared to the tradition tillage, the capacity of mechanization conservation tillage reducing the sand is higher about 33 1 %-48 3% . The income increase about 1?120 yuan per hectare. |
| Key words: conservation tillage,technology system,cold,windy and sandy areas |
