| Effects of degradation properties of biodegradable plastic mulches on soil temperature, humidity and cotton yield in Southern Xinjiang |
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| DOI：10.7606/j.issn.1000-7601.2021.04.08 |
| Key Words: biodegradable plastic film degradation rate soil temperature soil moisture cotton yield |
| Author Name | Affiliation | | WANG Long | College of Mechanical and Electronic Engineering, Tarim University , Ala’er, Xinjiang 843300, China
Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Ala’er, Xinjiang 843300, China | | HE Xiaowei | College of Mechanical and Electronic Engineering, Tarim University , Ala’er, Xinjiang 843300, China
Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Ala’er, Xinjiang 843300, China | | HU Can | College of Mechanical and Electronic Engineering, Tarim University , Ala’er, Xinjiang 843300, China
Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Ala’er, Xinjiang 843300, China | | WANG Xufeng | College of Mechanical and Electronic Engineering, Tarim University , Ala’er, Xinjiang 843300, China
Modern Agricultural Engineering Key Laboratory at Universities of Education Department of Xinjiang Uygur Autonomous Region, Ala’er, Xinjiang 843300, China | | LIU Qin | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, China | | YAN Changrong | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Key Laboratory of Prevention and Control of Residual Pollution in Agricultural Film, Ministry of Agriculture and Rural Affairs, Beijing 100081, China | | DING Jianping | Xinjiang Blue Ridge Tunhe Chemical Industry Joint Stock co., ltd, Changji, Xinjiang 831100, China |
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| Abstract: |
| Degradation process of three PBAT (polybutylene adipate terephthalate) biodegradable mulching plastic film (A, B1 and B2) in cotton field was studied, compared with common plastic film. The effects of biodegradable plastic film on soil temperature, soil moisture content, cotton growth and yield were analyzed. The resulted revealed that the degradation rate of different types of plastic film was different, and the order of degradation rate was B1＜A＜B2. In the early stage of cotton growth, the biodegradable plastic film surface remained intact, and the effect of heat preservation and moisture preservation was not significant, but with the degradation and rupture of the film surface, the soil temperature and moisture content under the film began to decrease. In the later stage of cotton growth, the soil temperature and moisture content of biodegradable plastic film were lower than that of common plastic film. The bio\|degradation time of A and B2 biodegradable plastic film was earlier, which restricted the growth of cotton in the middle period, resulting in reduction of seed cotton by about 20%. However, the growth period and yield of B1 biodegradable plastic film were not different from that of ordinary PE film with the seed cotton yield increasing by 0.89%, which had good social and ecological benefits. Therefore, the B1 biodegradable film had better application potential of cotton field covering and was more suitable for cotton planting in southern Xinjiang. |
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