| Impact of conservation tillage on crop growth and soil and water retaining under grain-legume-grass strip intercropping in slope land |
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| DOI：10.7606/j.issn.1000-7601.2013.03.02 |
| Key Words: conservation tillage contour strip farming soil moisture WUE soil erosion |
| Author Name | Affiliation | | ZHAO Xu | Gansu Key Laboratory of Crop Improvemens & Germplasm Enhancement/Gansu Provincial key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China
Agronomy Faculiy of Gansu Agricultural Unioersity, Lanzhou, Gansu 730070, China | | WANG Hanning | Gansu Key Laboratory of Crop Improvemens & Germplasm Enhancement/Gansu Provincial key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China
Agronomy Faculiy of Gansu Agricultural Unioersity, Lanzhou, Gansu 730070, China | | LI Lingling | Gansu Key Laboratory of Crop Improvemens & Germplasm Enhancement/Gansu Provincial key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China
Agronomy Faculiy of Gansu Agricultural Unioersity, Lanzhou, Gansu 730070, China | | CUI Tongxia | Gansu Key Laboratory of Crop Improvemens & Germplasm Enhancement/Gansu Provincial key Lab of Aridland Crop Science, Lanzhou, Gansu 730070, China
Agronomy Faculiy of Gansu Agricultural Unioersity, Lanzhou, Gansu 730070, China |
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| Abstract: |
| In attempt to discover the ways to effeetively prevent water and soil lose, improve water use efficiency (WUE) in sloping land, perennial crop alfalfa and some annual erops ineluding wheat, potatoes were used in this paper to study the impact of various cropping patterns and tillage methods on crop growth, soil moisture, WUE and soil erosion.The results showed that(1)the order of the potential ability of different cropping patterns to conserve the soil water and prevent the soil loss was as follows:no-tillage+straw mulch(NTS)>no-tillage(NT)>traditional(T);(2)conservation tillage mitigated the soil erosion.The order of the potential ability of different cropping pattemns to mitigate soil erosion was as follows:NTS>NT>T;(3)The no-tillage+straw mulch and no-tillage planting methods increased
soil moisture and water use efficiency in semi-arid areas and reduced soil erosion compared to the conventional farming.
Different cropping patterns showed different potentials in enhancing soil and water conservation and preventing soil ero-sion.The descending order of their potentials was NTSPL>TPL>NTSCL>TCL>NTSWL>TWL
. In conclusion,NTS could improve water use efficiency and effectively control soil erosion. Forage beans septum planting
combined with conservation tillage measures could not only
enhance the water and soil conservation and ameliorate the ecologieal influence of soil ero-sion,but also increased economic efficacy of land usage. Application of NTS in crop planting
should be recommended and promoted. |
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