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通过比较分析深松与压实及对照处理棕壤农田土壤的硬度剖面分布和水分入渗曲线变化,研究不同耕作措施对土壤机械物理性质和通透性能的影响。结果表明:(1)深松和压实处理后,0~25 cm土层硬度大小顺序为压实>对照>深松,25~40 cm土层的硬度为深松>压实>对照;而这一处理效果随处理后时间的延长而逐渐减弱,但90天后0~25 cm土层处理间差异依然存在,而25~40 cm土层这一差异不明显;(2)菲利浦公式能较好地表达压实、深松和对照处理土壤水分入渗速率随时间的变化过程,且不同处理及各处理重复间的土壤入渗曲线变异性较大;(3)对各处理土壤入渗菲利浦公式做标定处理求得的代表性入渗曲线,其初始入渗速率大小顺序为深松>对照>压实,而稳定入渗速率则为对照>压实>深松处理;说明深松和压实对土壤入渗能力影响明显不同,深松不仅能提高前期土壤水入渗能力、还能抑制入渗后期的深层渗漏。
The effects of different tillage measures on the mechanical properties and permeability of soil were studied by comparing the distribution of hardness profile and the infiltration curve of soil moisture in brown soil with compaction and compaction treatment. The results showed that: (1) The order of hardness of 0 ~ 25 cm soil layer was compaction> control> subsoiling after subsoiling and compaction, while the hardness of 25 ~ 40 cm soil layer was subsoiling> compaction> control; The effect of this treatment gradually weakened with the prolongation of the treatment time, but the difference remained between 0 ~ 25 cm soil layer after 90 days, while the difference of 25 ~ 40 cm soil layer was insignificant. (2) The soil moisture infiltration rate over time under compaction, subsoiling and contrast treatments was well expressed, and the variability of soil infiltration curve was significant between different treatments and the repeated treatments. (3) Phillips formula calibration process to determine the representative of the infiltration curve, the initial infiltration rate order of subsoiling> control> compaction, while the steady infiltration rate compared with the control> compaction> subsoiling treatment; that deep The effects of pine and compaction on soil infiltration ability are obviously different. Deep pine can not only improve the infiltration capacity of soil water in the early stage, but also inhibit the deep leakage in the late stage of infiltration.