Effects of residual plastic film pollution on soil water content and root-shoot growth of maize under drip irrigation condition

被引：0

作者：

Hu, Qi ^{[1
]}

Li, Xian-Yue ^{[1
]}

Shi, Hai-Bin ^{[1
]}

Chen, Ning ^{[1
]}

Zhang, Yue-Hong ^{[1
]}

机构：

[1] College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Huhhot,010018, China

来源：

Zhongguo Huanjing Kexue/China Environmental Science | 2023年 / 43卷 / 11期

关键词：

Crops - Infiltration - Plastic films - Rain - Sustainable development - Water conservation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

To evaluate the impact of the residual plastic film (RPF) amounts on agricultural production, a two-year field experiment was conducted during 2019 and 2020 in Jiuzhuang Agricultural Comprehensive Water-saving Experimental Station, Hetao Irrigation District. The variations of SWC, photosynthetic performance, root-shoot growth, and crop yield were analyzed under different RPF amounts with 0 (CK), 150 (T1), 300 (T2), 450 (T3), and 600kg/hm2 (T4). Moreover, a reasonable field management strategy was formulated. The results showed that SWC in the 0~30cm soil layer under the RPF amount of 0~300kg/hm2 was increased due to the reduction of water infiltration caused by the RPF. However, SWC in the 0~30cm soil layer under the RPF amount with ≥ 450kg/hm2 was decreased due to the formation of preferential flow. Meanwhile, the maize photosynthetic performance, maize root-shoot dry weight, and the root-shoot growth rate were decreased under high RPF amount (≥450kg/hm2), especially in the early crop growth stage. The root dry weight, shoot dry weight, and the root-shoot ratio under the T4 treatment were 48.66%, 34.63%, and 18.17% lower than that of the CK, respectively. Additionally, crop yield and water use efficiency (WUE) were limited by the RPF. Crop yield and WUE under the T4treatment decreased by 34.05% and 28.85% compared with that of the CK, respectively. In general, the increase of RPF amount resulted in the decreases of soil water infiltration, maize photosynthetic capacity, maize growth, and maize yield. Therefore, it is of great necessity to determine a reason management strategy for RPF pollution. The reason management strategy would increase root and shoot growth, improve photosynthetic performance, and promote the green sustainable development of the dripped irrigation field under plastic film mulching in Hetao Irrigation District. © 2023 Chinese Society for Environmental Sciences. All rights reserved.

引用

页码：5944 / 5953