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| Located researching effects of plastic film picking-up methods on soil residual film and cotton yield in oasis |
| Received:August 14, 2020 |
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| KeyWord:picking up method;plastic film residues;cotton;oasis irrigated area;location research |
| Author Name | Affiliation | E-mail | | MA Xing-wang | Institute of Soil, Fertilizer and Agricultural Water-saving, Xinjiang Academy of Agricultural Sciences/Key Laboratory of Northwest Oasis Agricultural Environment of Ministry of Agriculture and Rural Affairs, Urumqi 830091, China | | | ZHAO Jing | School of Agriculture, Shihezi University, Shihezi 832003, China | | | LI Pan | Institute of Soil, Fertilizer and Agricultural Water-saving, Xinjiang Academy of Agricultural Sciences/Key Laboratory of Northwest Oasis Agricultural Environment of Ministry of Agriculture and Rural Affairs, Urumqi 830091, China | | | YANG Tao | Institute of Soil, Fertilizer and Agricultural Water-saving, Xinjiang Academy of Agricultural Sciences/Key Laboratory of Northwest Oasis Agricultural Environment of Ministry of Agriculture and Rural Affairs, Urumqi 830091, China | | | YE Jun | School of Agriculture, Shihezi University, Shihezi 832003, China | | | MIN Wei | School of Agriculture, Shihezi University, Shihezi 832003, China | | | HOU Zhen-an | School of Agriculture, Shihezi University, Shihezi 832003, China | hzhe_agr@shzu.edu.cn |
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| Abstract: |
| Soil plastic film residues and cotton yield in an oasis cotton field were location-researched for three consecutive years with no picking(CK), partial picking(Cp)and thorough picking(Cf). The results showed that the amount of residual film decreased after picking; the decrement of Cf was larger than that of Cp, the amount of residual film of 0~20 cm and 20~30 cm decreased in the same proportion, and the increment or decrement of 0~20 cm soil level accounted for 57.1%~80.0% of the total increase and decrease of the 0~30 cm residual film. The descending order of residual amounts of 0~30 cm plastic film in the three consecutive years was no picking-up, partial pickingup and thorough picking-up. Under different plastic film picking degrees, the cotton yield in the first year was different and the yield was in the descending order of thorough picking and partial picking. The difference in cotton yield will increase among these treatments if these methods are continued. In conclusion, if the picking method is effective, the plastic film residue can be eliminated, and the picking intensity is strong enough, the soil residual plastic film can be eradicated for several years. Moreover, if a theoretical threshold value of film residues exists, the cotton yield would decrease significantly if the plastic film concentration were more than the threshold. |
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