Effects of irrigation regime on soil hydrothermal microenvironment, cotton biomass, and yield under non-film drip irrigation system in cotton fields in southern Xinjiang, China

作者：Zhipeng Li, Sumei Wan, Guodong Chen, Yingchun Han, Yaping Lei, Yunzhen Ma, Shiwu Xiong, Tingyong Mao, Lu Feng, Guoping Wang, Xiaofei Li, Zhanbiao Wang, Xiaoyu Zhi, Yahui Jiao, Minghua Xin, Yabing Li, Beifang Yang · 发表于：Industrial Crops and Products · 年份：2023 · DOI：10.1016/j.indcrop.2023.116738 · 被引用次数：30 · 研究领域：Irrigation Practices and Water Management、Plant Water Relations and Carbon Dynamics、Soil erosion and sediment transport

Non-film drip irrigation cotton planting mode can effectively solve the problem of residual film pollution in arid areas and promote sustainable agricultural development . However, the research on the efficient irrigation regime and soil hydrothermal microenvironment suitable for non-film drip irrigation cotton planting is scarce. Considering this, using the data monitoring technology based on internet of things sensors, we set 3 different irrigation treatments in 2020–2021. In the flowering and boll setting stage, cotton was watered for 4 times (W4), 6 times (W6), and 8 times (W8) with a single irrigation amount of 69 mm for each of these 3 treatments, and the last time irrigation amount under W8 treatment was 52.2 mm. At the seedling stage, the cotton was not irrigated under each treatment. At the squaring stage, the irrigation times and single irrigation amount were the same under each treatment. The results showed that the average soil water content (SWC) in the 50–110 cm soil layer was increased obviously with the increase in the total irrigation amount. Compared with W4 and W8 treatments, W6 treatment exhibited the highest the soil temperature in the 10–30 cm soil layer in the full boll stage and boll opening stage and the highest soil effective accumulated temperature (SEAT) from initial flowering stage to boll opening stage. The reproductive organ allocation rate in two years was 3.6 % and 2 % higher under W6 than under W8, respectively. With the increase of total irr...