摘要
在5种保护性耕作法与传统耕作法连续4年的田间对比试验研究的基础上,利用农业经济评价方法,对每一种耕作方法经济适应性进行评价,结果表明:不论是否计入秸秆的投入,采用保护性耕作法的免耕秸秆覆盖(NTS)在几种耕作措施中是最佳的一种耕作方法。免耕秸秆覆盖(NTS)经济效益好、综合生产能力高,且它的生产能力在不同的生产条件下比其它耕作法更具有稳定性,具有较强的抵御外界变化的能力。因此,在陇中黄土高原半干旱区实施免耕秸秆覆盖(NTS)的保护性耕作法不仅能够达到高效、高产的目的,而且有助于该区农业的可持续发展。
Basing on the experiment of conservation tillage conducted in the semi-arid areas of Loess Plateau from 2001 to 2005, the economic adaptability of conventional tillage and 5 kinds of conservation tillage was evaluated by using the agro-economic evaluation method. The results showed that no-till with straw cover （NTS） was the best method among various treatments, and the economic efficiency and production level of NTS were the highest. The productivity of NTS was much stable and the resistant-ability of NTS to environmental disasters was much strong. Therefore, NTS is an effective way that can not only increase the crop yield but also im- prove the sustainable development of agriculture in the semi-arid areas of Loess Plateau in central Gansu Province.
出处
《干旱地区农业研究》
CSCD
北大核心
2006年第5期14-19,共6页
Agricultural Research in the Arid Areas
基金
中澳合作项目ACIAR"提高甘肃黄土高原西部雨养农业系统生产力及其可持续性的研究"(LWR2/1999/094)
关键词
保护性耕作
经济适应性
评价
黄土高原
conservation tillage
economic adaptability
evaluation
Loess Plateau
