Exploring the response relationship between crop rooting, seedling emergence and soil water, heat and salt environmental factors in dry sowing wet emergent cotton fields

作者：Jianqin Ma, Yu Ding, Jianghui Zhang, Kangqi Fan, Yungang Bai, Bifeng Cui, Xiuping Hao, Guangtao Fu, Bangxin Ding · 发表于：Industrial Crops and Products · 年份：2025 · DOI：10.1016/j.indcrop.2025.121201 · 被引用次数：10 · 研究领域：Research in Cotton Cultivation、Soil Carbon and Nitrogen Dynamics、Seed Germination and Physiology

The new water management technology of dry sowing wet emergence (DSWE) saves water, increases efficiency, and improves seedling emergence rate, which has significant application value in arid areas. In order to explore the most suitable soil moisture, temperature, and salinity environment for cotton growth in the dry zone of Northwest China, and to optimize the DSWE irrigation pattern, this study conducted DSWE field irrigation experiments in 2021 and 2022 in Aksu, Xinjiang, with three levels of emergence water (6 mm, 10.5 mm, and 15 mm) and two levels of drip frequency (2 and 4 times)， and the local conventional winter irrigation (225 mm) was selected as the control treatment. The results showed that the soil moisture content showed a significant difference in space, and the covered area showed a higher level in horizontal dimension. The high-frequency irrigation treatment yielded substantially higher water content in the 0–30 cm surface soil layer compared to low-frequency applications, demonstrating a 15.2 % increase in average soil water content. A consistent pattern emerged across both study years, where increasing emergence water volume corresponded to a progressive decline in average soil temperature. The D2 treatment resulted in a 3.86 % reduction in average soil temperature relative to D1 conditions. The soil electrical conductivity measurements revealed markedly lower values under winter irrigation compared to DSWE treatments, with high-frequency irrigation proving ...