|
| Effects of different types of mulching film on millet yield and their degradation properties in dry farming area of Shanxi Province, China |
| Received:November 05, 2021 Revised:February 18, 2022 |
| View Full Text View/Add Comment Download reader |
| KeyWord:millet yield;degradable plastic film;degradation property;degradation rate |
| Author Name | Affiliation | E-mail | | YANG Zhenxing | College of Resources and Environment, Shanxi Agricultural University, Taiyuan 030031, China | | | ZHOU Huaiping | College of Resources and Environment, Shanxi Agricultural University, Taiyuan 030031, China | huaipingzhou@126.com | | XIE Wenyan | College of Resources and Environment, Shanxi Agricultural University, Taiyuan 030031, China | | | LIU Zhiping | College of Resources and Environment, Shanxi Agricultural University, Taiyuan 030031, China | | | HE Wenqing | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | LIU Qi | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China | | | WANG Yue | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China | |
|
| Hits: 866 |
| Download times: 810 |
| Abstract: |
| To study the effects of different types of mulching film on millet yield and their degradation performance in a dry farming area of Shanxi Province, a mulching experiment was carried out in Shuozhou, Shanxi Province. Four treatments[PE, PLA/PBAT complex type degradable mulch(PP), PBAT biodegradable mulch(PB), and no mulch(LD)] were set up. Results showed that the yield of millet under mulching increased by an average of 32.6% compared with that without mulching; however, there was no significant difference between mulching treatments. With an increase in mulching time, the water vapor transmittance of the two degradable mulching films increased significantly in the order:PB film > PP film > PE film. Mechanical properties(tensile strength, tear strength, and fracture nominal strain)decreased significantly in the order:PE film > PP film > PB film. Changes of microstructure and chemical structure were significant, but was not obvious in the ordinary plastic film. Surface roughness was in the order:PB film > PP film > PE film. The degradation rate of PB film reached 74.8% after 150 days of mulching, and the degradation debris of less than 2 cm2 and 2~5 cm2 were the main size. From the comprehensive evaluation of millet yield, physical properties, chemical structure, and degradation residual degree of film, PBAT fully biodegradable mulching film has good degradation effects on millet yield and can be used as a substitute for PE film in dryland millet production in northern Shanxi Province. K |
|
|
|
