| The effect of conservational farming on soil water and oil-seed rape yield in hilly area of Sichuan |
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| DOI：10.7606/j.issn.1000-7601.2010.04.31 |
| Key Words: hilly area of Sichuan conservational farming soil water oil-seed rape yield |
| Author Name | Affiliation | | ZHAO Xiaorong | Soil and Fertilizer Institute of Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan 610066, China | | CHEN Xi | Agricultural Bureau of Daying County, Daying，Sichuan 629307, China | | WANG Changtao | Soil and Fertilizer Institute of Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan 610066, China | | ZHAO Xiejing | Soil and Fertilizer Institute of Sichuan Academy of Agricultural Sciences, Chengdu, Sichuan 610066, China |
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| Abstract: |
| Through a four-year experiment in oil-seed rape field located in hilly area of Sichuan, we studied the effect of different farming patterns (3 treatments with 3 replicates) on soil moisture and rape yield. The results indicated
that the straw covering treatment could help the soil hold water. During the growth period of rape, the soil water content of the field treated by straw covering is 4.9% to 12.8% higher than that of the field treated by non-straw covering.
During the flowering period of rape, the soil water content of the field treated by straw covering is 2.2% to 12.2% high-er than that of the field treated by non-straw covering. The results also indicated that the straw covering treatment is pro-pitious to the increase of rape pod number. The pod number of each rape in the straw covering farming increased by 2.5% to 10. 4% compared with that in the tllage non-straw covering farming. The conservational farming method in-creased the rape yield significantly. When compared with the tllage non-straw covering famming, the rape yield in two different types of straw covering farming increased averagely by 6.0% and 10.5% . The increase of rape yield ranged from 3.8% to 12.6% mainly due to the increased number of rape pods. |
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