Application of PBAT/PPC Degradable Mulch Film in Cowpea (Vigna sinensis) Production

doi:10.11924/j.issn.1000-6850.casb2021-1174

Abstract

Abstract:

PBAT and PPC are biodegradable materials based on chemical synthesis, which have become current research hot spot. The aim of this study is to discuss the practical effects of PBAT and PPC mulch film in agricultural production. Four different mulch film treatments were conducted, including PBAT-PPC film, PBAT-PPC-BioM film, PE film and No-film treatment (CK). Effects of different mulch film treatments on surface soil temperature, weed productivity and cowpea yield were studied, and the degradable properties and final economic benefits of mulch film were evaluated. The results showed that compared with CK, the PBAT-PPC film treatment increased surface soil temperature by 0.9℃ from May to July and decreased surface soil temperature by 0.2-1.6℃ from July to August. The PBAT-PPC film and PBAT-PPC-BioM film significantly promoted cowpea yield by 37% and 22%, respectively. There was no significant difference of weed productivity between PBAT-PPC mulch film and PE mulch film, but the mulch film treatments decreased about 45% weed biomass compared with CK. The biodegradation grades of PBAT-PPC and PBAT-PPC-BioM were level 4 and level 5, respectively, which satisfied the requirements of tillage and in situ biodegradation. Although the cost of degradable mulch film was relatively high, the effect on cowpea yield was obvious, and the total income was higher than that of CK. In addition, the degradable mulch film had no environmental risk. Above all, the mulch film based on PBAT and PPC is beneficial to cowpea production and worth promoting.

Key words: PBAT, PPC, mulch film, degradable, cowpea

ZHOU Tianmei, ZHOU Xinwei, LU Jing, LI Menglin, ZHAI Weijie, DONG Linlin, LU Changying, SHI Linlin. Application of PBAT/PPC Degradable Mulch Film in Cowpea (Vigna sinensis) Production[J]. Chinese Agricultural Science Bulletin, 2022, 38(36): 62-66.

Figures/Tables 4

References 25

[1]	薛颖昊, 孙占祥, 居学海, 等. 可降解农用地膜的材料研究与应用现状[J]. 中国塑料, 2020, 34(5):87-96. doi: 10.19491/j.issn.1001-9278.2020.05.014
[2]	孙志东. 塑料农膜对农田的污染及防治[J]. 农村经济, 2002(6):11-12.
[3]	XUE Y, GUO J, LI C, et al. Influencing factors of farmers' cognition on agricultural mulch film pollution in rural China[J]. Science of the total environment, 2021, 787:147702. doi: 10.1016/j.scitotenv.2021.147702 URL
[4]	张秀萍. 如何提高残膜回收机械的拾净率[J]. 河北农机, 2021(10):24-25.
[5]	苏优丽. 治理白色污染大力推广残膜回收机械化技术[J]. 农机使用与维修, 2021(7):145-146.
[6]	康清华, 程兴田. 北方地区玉米地膜机械化回收模式探析[J]. 农机科技推广, 2021(8):34-35.
[7]	GRIFFIN-LAHUE D, GHIMIRE S, YU Y, et al. In-field degradation of soil-biodegradable plastic mulch films in a Mediterranean climate[J]. Science of the total environment, 2022, 806:150238. doi: 10.1016/j.scitotenv.2021.150238 URL
[8]	BANDOPADHYAY S, MARTIN-CLOSAS L, PELACHo AM, et al. Biodegradable plastic mulch films: impacts on soil microbial communities and ecosystem functions[J]. Front microbiol, 2018, 9:819. doi: 10.3389/fmicb.2018.00819 pmid: 29755440
[9]	申丽霞, 兰印超, 李若帆. 不同降解膜覆盖对土壤水热与玉米生长的影响[J]. 干旱地区农业研究, 2018, 36(1):200-206.
[10]	袁海涛, 于谦林, 王丽红, 等. 可降解地膜降解性能及对棉花生长的影响[J]. 华北农学报, 2017, 32(S1):347-352. doi: 10.7668/hbnxb.2017.S1.060
[11]	余旺, 王朝云, 易永健, 等. 国内生物降解地膜研究进展[J]. 塑料科技, 2019, 47(12):156-165.
[12]	LI R, LIU Y, SHENG Y, et al. Effect of prothioconazole on the degradation of microplastics derived from mulching plastic film: apparent change and interaction with heavy metals in soil[J]. Environ pollut, 2020, 260:113988. doi: 10.1016/j.envpol.2020.113988 URL
[13]	NELSON T F, REMKE S C, KOHLER H E, et al. Quantification of synthetic polyesters from biodegradable mulch films in soils[J]. Environ sci technol, 2020, 54(1):266-275. doi: 10.1021/acs.est.9b05863 pmid: 31738056
[14]	LU X, DU F, GE X, et al. Biodegradability and thermal stability of poly(propylene carbonate)/starch composites[J]. J Biomed mater res A, 2006, 77(4):653-658. pmid: 16514604
[15]	杨惠娣, 唐赛珍. 生物降解塑料试验评价方法的进展[J]. 现代塑料加工应用, 1993,(6):49-54+62.
[16]	RANSOM C J, JOLLEY V D, BLAIR T A, et al. Nitrogen release rates from slow- and controlled-release fertilizers influenced by placement and temperature[J]. PLos one, 2020, 15(6):e0234544. doi: 10.1371/journal.pone.0234544 URL
[17]	MELILLO J M, BUTLER S, JOHNSON J, et al. Soil warming, carbon-nitrogen interactions, and forest carbon budgets[J]. Proc natl acad sci U S A, 2011, 108(23):9508-9512. doi: 10.1073/pnas.1018189108 URL
[18]	SINGH S, KUMAR V, GILL J P K, et al. Herbicide glyphosate: toxicity and microbial degradation[J]. Int j environ res public health, 2020, 17(20).
[19]	BUSI R, VILA-AIUB M M, BECKIE H J, et al. Herbicide-resistant weeds: from research and knowledge to future needs[J]. Evol appl, 2013, 6(8):1218-1221. doi: 10.1111/eva.12098 pmid: 24478803
[20]	QI Y, BERIOT N, GORT G, et al. Impact of plastic mulch film debris on soil physicochemical and hydrological properties[J]. Environ pollut, 2020, 266(Pt 3):115097. doi: 10.1016/j.envpol.2020.115097 URL
[21]	申丽霞, 王璞, 张丽丽. 可降解地膜的降解性能及对土壤温度、水分和玉米生长的影响[J]. 农业工程学报, 2012, 28(4):111-116.
[22]	罗莎. 生物降解地膜降解性能及对辣椒生长的影响[D]. 邯郸: 河北工程大学, 2020:24-25.
[23]	雷蕾, 汤秋香. 可降解地膜推广应用的影响因子分析[J]. 农业展望, 2020, 16(8):128-133.
[24]	张希丽, 陈兰鹏. 使用普通地膜与可降解地膜存在的问题及对策[J]. 现代农业科技, 2021(8):150-151.
[25]	KUMAR M, XIONG X, H E M, et al. Microplastics as pollutants in agricultural soils[J]. Environ pollut, 2020, 265(Pt A):114980.

处理	5月15日	6月1日	6月15日	6月30日	7月15日	7月30日	8月6日
PBAT-PPC	0	2	3	4	4	4	4
PBAT-PPC-BioM	0	1	3	4	5	5	5

处理	5月15日	6月1日	6月15日	6月30日	7月15日	7月30日	8月6日
PBAT-PPC	0	2	3	4	4	4	4
PBAT-PPC-BioM	0	1	3	4	5	5	5

处理	地膜单价/ (元/kg)	地膜成本/ (元/hm²)	铺膜成本/ (元/hm²)	回收成本/ (元/hm²)	豇豆销售单价/ (元/kg)	豇豆产量/ (t/hm²)	豇豆收益/ (元/hm²)	毛收入/ (元/hm²)
PBAT-PPC	40	5400	1125	0	6.7	28.2	189163	182638
PBAT-PPC-BioM	40	5400	1125	0	6.7	25.2	169063	162538
PE	16	2160	1125	2250	6.7	25.3	169733	164198
NoFilm	0	0	0	0	6.7	20.6	138020	138020

处理	地膜单价/ (元/kg)	地膜成本/ (元/hm²)	铺膜成本/ (元/hm²)	回收成本/ (元/hm²)	豇豆销售单价/ (元/kg)	豇豆产量/ (t/hm²)	豇豆收益/ (元/hm²)	毛收入/ (元/hm²)
PBAT-PPC	40	5400	1125	0	6.7	28.2	189163	182638
PBAT-PPC-BioM	40	5400	1125	0	6.7	25.2	169063	162538
PE	16	2160	1125	2250	6.7	25.3	169733	164198
NoFilm	0	0	0	0	6.7	20.6	138020	138020