干旱区生态环境知识资源中心(Arid): Simulation of maize crop growth using an improved crop model considering the disintegrated area of biodegradable film

Arid

DOI	10.1016/j.fcr.2021.108270
	Simulation of maize crop growth using an improved crop model considering the disintegrated area of biodegradable film
	Chen, Ning; Li, Xianyue; Shi, Haibin; Hu, Qi; Zhang, Yuehong; Sun, Yannan; Song, Fanfan
通讯作者	Li, XY (corresponding author), Inner Mongolia Agr Univ, Coll Water Conservancy & Civil Engn, Hohhot 010018, Peoples R China.
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2021
卷号	272
英文摘要	Biodegradable film is recognized as a promising alternative to plastic film within crop mulching. This is because biodegradable film disintegrates into water and carbon dioxide through soil microorganisms-facilitated catalytic decomposition during the crop growth season. However, biodegradable film mulching (BFM) also has some disadvantages, such as the water and heat conservation being poor during nighttime period. Crop growth and yield is reduced by a suboptimal distribution of soil water and temperature. Therefore, there is value in assessing the effects of BFM on crop growth during daytime and nighttime periods, and particularly under different irri-gation levels. This study developed a crop growth model (FCM) considering the disintegrated area of biode-gradable film mulching to capture crop growth dynamics under different soil water contents and mulching areas. The disintegrated area of biodegradable film was determined by an image method. The model was firstly cali-brated and validated using observed data collected over two years (2018 and 2019) under three mulching treatments [plastic film mulching (PFM), biodegradable film mulching (BFM), and no film mulching (NFM)] and three irrigation levels (irrigation depths of 30, 22.5, and 15 mm). The model was then used to evaluate crop growth rate (k), crop yield (CY), and water use efficiency (WUE) during daytime and nighttime periods. The results showed that the simulation accuracy of the FCM model was sufficiently high under different treatments, with a root mean square error (RMSE) of 284.6 kg ha(-1). The benefits of BFM for crop growth were similar to that of PFM under a low range of effective accumulated soil temperature (EAST). However, differences in crop growth variables between PFM and BFM increased with an increase in EAST. Average leaf area index (LAI) and aboveground dry biomass (AB) during both years increased by 16.9 % and 39.2 % under PFM compared to that under BFM, respectively. In general, the harvest index (HI), CY, and water use efficiency (WUE) under BFM were lower than that under PFM. There were comparable variations in crop growth under different irrigation levels. The highest WUE occurred in the BFM22.5 treatment at 44.5 kg ha(-1) mm(-1). Therefore, this study recommends an irrigation depth of 22.5 mm as an optimal irrigation treatment in an arid region.
英文关键词	Biodegradable film mulching Crop model Crop growth rate Crop yield Different irrigation levels
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000709961600007
WOS关键词	PLASTIC MULCH ; SOIL-TEMPERATURE ; RICE PRODUCTION ; USE EFFICIENCY ; YIELD ; DEGRADABILITY ; POLYLACTIDE ; MOISTURE ; SEASON ; CHINA
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368393
作者单位	[Chen, Ning; Li, Xianyue; Shi, Haibin; Hu, Qi; Zhang, Yuehong; Sun, Yannan; Song, Fanfan] Inner Mongolia Agr Univ, Coll Water Conservancy & Civil Engn, Hohhot 010018, Peoples R China
推荐引用方式 GB/T 7714	Chen, Ning,Li, Xianyue,Shi, Haibin,et al. Simulation of maize crop growth using an improved crop model considering the disintegrated area of biodegradable film[J],2021,272.
APA	Chen, Ning.,Li, Xianyue.,Shi, Haibin.,Hu, Qi.,Zhang, Yuehong.,...&Song, Fanfan.(2021).Simulation of maize crop growth using an improved crop model considering the disintegrated area of biodegradable film.FIELD CROPS RESEARCH,272.
MLA	Chen, Ning,et al."Simulation of maize crop growth using an improved crop model considering the disintegrated area of biodegradable film".FIELD CROPS RESEARCH 272(2021).