| 方日尧,同延安,赵二龙,梁东丽.渭北旱原不同保护性耕作方式水肥增产效应研究[J].干旱地区农业研究,2003,(1):54~57 |
| 渭北旱原不同保护性耕作方式水肥增产效应研究 |
| Effect of conservation tillages on moisture， fertility and yield in Weibei Highland |
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| DOI：10.7606/j.issn.1000-7601.2003.01.12 |
| 中文关键词: 保护性耕作 土壤肥力 土壤水分 渭北旱原 |
| 英文关键词:conservation tillage soil fertility soil water Weibe i Highland |
| 基金项目:国家"九五"国家科技重点攻关项目(96-004-04-05) |
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| 中文摘要: |
| 在渭北旱原合阳县,对机播条件下,采用免耕秸秆粉碎覆盖(Ⅰ)、免耕秸秆覆盖(Ⅱ)、深松秸秆粉碎覆盖(Ⅲ)、免耕高留茬覆盖(Ⅳ)、深松高留茬覆盖(Ⅴ)5种保护性耕作方式进行了连续4a试验研究,结果表明,保护性耕作具有明显的保水增产增收效果,免耕高留茬覆盖和深松高留茬覆盖增产最为显著,分别比传统耕作增产37.5%和34.9%,免耕(深松)高留茬覆盖还具有省工节能,用养结合的特点,经济、生态和社会综合效益明显。 |
| 英文摘要: |
| A continuous experiment has been conducted in Heyang county in Weibei Highland with the conservation tillages of no till and chopped stalk mulch(Ⅰ) , no till and stalk mulch(Ⅱ), subsoil and chopped stalk mulch(Ⅲ), no till and standing stalk mulch(Ⅳ) and subsoil and standing stalk mulch (Ⅴ). The res ults showed that the conservation tillages had the remarkable advantages in cons er ving water, improving soil, and increasing production and income. No till and s t anding stalk mulch and subsoil and standing stalk mulch were most effective with the yield increment of 37.5% and 34.9% respectively compared to traditional til lages(ck). No till (or subsoil) and standing stalk mulch can save workdays and energy, and produce the comprehensive social, economic and ecological effects. T herefore, it is one of effective ways to solve the problem of "droughts and poo r fertility"of farming in arid and semi arid areas. |
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