Infiltration and Water Use Efficiency of Maize Fields with Drip Irrigation and Biodegradable Mulches in the West Liaohe Plain, China

被引:9
作者
Feng, Yayang [1 ,2 ,3 ]
Shi, Haibin [1 ,3 ]
Jia, Yanhui [2 ]
Miao, Qingfeng [1 ,3 ]
Jia, Qiong [1 ,3 ]
Wang, Ning [4 ]
机构
[1] Mongolia Agr Univ, Coll Water Conservancy & Civil Engn, Hohhot 010018, Peoples R China
[2] Chinese Acad Agr Sci CAAS, Farmland Irrigat Res Inst, Xinxiang 453002, Peoples R China
[3] High Efficiency Water Saving Tech Equipment & Wate, Hohhot 010018, Peoples R China
[4] Inner Mongolia Inst Hydraul Res, Hohhot 010051, Peoples R China
来源
PLANTS-BASEL | 2023年 / 12卷 / 05期
基金
中国国家自然科学基金;
关键词
drip irrigation; biodegradable mulch; precipitation infiltration; yield; water use efficiency; SOIL-TEMPERATURE; SEED YIELD; LONG-TERM; FILM;
D O I
10.3390/plants12050975
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Biodegradable mulches have the same temperature- and moisture-preservation effects as ordinary plastic mulches before degradation. After degradation, rainwater enters the soil through the damaged parts, improving precipitation utilization. Under drip irrigation with mulching, this study explores precipitation utilization of biodegradable mulches under different precipitation intensities and the effects of different biodegradable mulches on the yield and water use efficiency (WUE) of spring maize in the West Liaohe Plain, China. In this paper, in situ field observation experiments were conducted for three consecutive years from 2016 to 2018. Three types of white degradable mulch films were set up, with induction periods of 60 d (WM60), 80 d (WM80), and 100 d (WM100). Three types of black degradable mulch films were also used, with induction periods of 60 d (BM60), 80 d (BM80), and 100 d (BM100). Precipitation utilization, yield, and WUE under biodegradable mulches were studied, with ordinary plastic mulches (PM) and bare land (CK) set as controls. The results showed that as precipitation increased, the effective infiltration of precipitation decreased first and then increased. When precipitation reached 89.21 mm, plastic film mulching no longer affected precipitation utilization. Under the same precipitation intensity, the precipitation effective infiltration ratio increased as the damage to the biodegradable film increased. Still, the intensity of this increase gradually decreased as the damage increased. The highest yield and WUE were observed for the degradable mulch film with an induction period of 60 days in years with normal rainfall and for the degradable mulch film with an induction period of 100 days in dry years. In the West Liaohe Plain, maize planted under film receives drip irrigation. We recommend that growers select a degradable mulch film with a degradation rate of 36.64% and an induction period of approximately 60 days in years with normal rainfall, and a degradable mulch film with an induction period of 100 days in dry years.
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页数:19
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