Improving the Key Enzyme Activity, Conversion Intensity, and Nitrogen Supply Capacity of Soil through Optimization of Long-Term Oilseed Flax Rotation Planting Patterns in Dry Areas of the Loess Plateau of China

• DOI: 10.3390/agronomy14020262
• Publication Date: 2024-01-25T11:54:12Z
• Authors: Yuhong Gao; Yong Zhang; Haidi Wang; Bing Wu; Yue Li; Bin Yan; Yifan Wang; Peina Lu; Ruijun Wang; Ming Wen; Xingkang Ma; Peng Xu; Wenfang Xue; Changyan Chao; Zedong Wen
• Keywords: Loess plateau; Intensity; Soil enzyme

Various crop rotation patterns can result in differences nutrient consumption and the accumulation of toxic substances soil, indirectly impacting soil environment its supply capacity. Implementing optimized planting practices is beneficial for maintaining favorable physical chemical properties farmland arid area northwestern China. This study aimed to establish a pattern improve key enzyme activities nitrogen conversion efficiency, as well understand underlying mechanism enhancing A field experiment was conducted effect four flax patterns, which included 13 with different frequencies: 100% Flax (Cont F), 50% (I) (WFPF, FPFW, PFWF, FWFP), (II) (FWPF, WPFF, PFFW, FFWP), 25% (WPWF, PWFW, WFWP, FWPW), on rate conversion, Here, F, P, W represent oilseed flax, potato, wheat, respectively. The results indicated that wheat stubble significantly increased intensity ammonification denitrification before planting. Additionally, activity levels nitrate reductase nitrite under were by 66.67% 104.55%, while urease decreased 27.27–133.33% compared other stubbles. After harvest, significantly, ammonification, nitrification, reduced 7.83–27.72%. WFWP FWFP treatments led significant increase fixation various rotations after harvest inorganic next crop. suggests long-term enhance sowing. may transfer raise available content soil. These findings are crucial reducing loss improving capacity dry areas Loess Plateau