A study was conducted at Punjab Agricultural University, Ludhiana, Punjab, with the aim of monitoring soil loss and infiltration rate in loamy sand soil. The study focused on the effects of applying polyvinyl alcohol (PVA) and mulch under simulated rainfall conditions. The experimental setup involved testing three levels of PVA (0.5%, 0.75%, and 1.0%), one level of wheat-straw mulch (600 g/m²), and a Control treatment (untreated soil). Each of these treatments was replicated four times. The lowest soil loss (20.9 g/m²) was recorded under the 1.0% PVA treatment, while the highest (120.1 g/m²) was seen under the 0.5% PVA treatment. The 1.0% PVA treatment showed a significant reduction in soil loss compared to the 0.5% PVA, 0.75% PVA, mulch, and Control treatments, with reductions of approximately 82.6%, 45.1%, 81.2%, and 89.6%, respectively. Regarding infiltration rates, the Control treatment exhibited the lowest rate (2.4 cm/h), while the 1.0% PVA treatment displayed the highest rate (9.6 cm/h). Additionally, the use of mulch led to a 44.7% reduction in soil loss compared to the treatment without mulch, likely due to the mitigated impact of raindrops. The infiltration rate was significantly higher (4.8 cm/h) under the mulched treatment compared to the unmulched treatment (2.4 cm/h). Overall, the application of PVA and mulch resulted in a drastic reduction in soil loss, likely attributable to the enhanced stability of soil aggregates, improved infiltration rate, and reduced runoff.

旁遮普邦卢迪亚纳旁遮普农业大学进行了一项研究，旨在监测壤质沙土的土壤流失和渗透率。该研究的重点是在模拟降雨条件下施用聚乙烯醇（PVA）和覆盖物的效果。实验设置包括测试三种水平的 PVA（0.5%、0.75% 和 1.0%）、一种水平的麦秆覆盖物（600 g/m ² ）和一种对照处理（未处理的土壤）。每个处理重复四次。 1.0% PVA 处理下土壤流失量最低（20.9 g/m ² ），而0.5% PVA 处理下土壤流失量最高（120.1 g/m ² ）。与 0.5% PVA、0.75% PVA、覆盖物和对照处理相比，1.0% PVA 处理显示土壤流失显着减少，分别减少约 82.6%、45.1%、81.2% 和 89.6%。关于渗透率，对照处理表现出最低的渗透率（2.4 cm/h），而1.0% PVA处理表现出最高的渗透率（9.6 cm/h）。此外，与不使用覆盖物的处理相比，使用覆盖物导致土壤流失减少了 44.7%，这可能是由于雨滴的影响减轻了。与未覆盖处理（2.4 cm/h）相比，覆盖处理下的入渗速率（4.8 cm/h）显着更高。总体而言，PVA 和覆盖物的应用导致土壤流失大幅减少，这可能归因于土壤团聚体稳定性的增强、渗透率的提高和径流的减少。