Mulches are materials applied in a soil surface for different roles and purposes. Plastic mulches with different colour have been developed and utilized in different crop production systems. Using coloured plastic mulches is mainly focused in modifying the radiation budget and decreasing the soil water loss. Besides, it helps to regulate soil temperature, water use efficiency, plant growth, yield, quality and weed and insect infestation. In this review, the knowledge and possible application of coloured plastic mulches, which can improve the soil physical properties, growth, yield, and quality crops has been reviewed and discussed. The role of coloured plastic mulches to mitigate the harmful effect of environmental stress in crops is also examined. Various physicochemical processes leading to improved crop production under the effect of coloured plastic mulches are also discussed. The combined results indicated that, effect of coloured plastic mulches is highly significant on soil temperature, moisture and water holding capacity. While black and blue plastics increase soil temperature, clear and white decreases it. Higher number of fruits, number of roots, tubers and bulbs was recorded in use of coloured plastic mulches. Similarly, the TSS, Vitamin C and juice percentage of different plants also showed significant improvement. It is also reported that weed infestation and viral diseases is highly reduced. Coloured plastic mulches also have some negative impacts like, decrease growth and yield in some plants, increase pest infestation, microplastics contamination, soil puddling, soil structural loss and reduce activity of soil-microorganisms. Therefore, use of coloured plastic mulches require close inspection of interaction with factors like; cropping season, root zone temperature, crop type, insect pest infestation and water use efficiency factors.

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有色塑料覆盖物：对土壤特性和农作物生产力的影响

覆盖物是应用于土壤表面的材料，具有不同的作用和目的。已经开发了不同颜色的塑料覆盖物，并将其用于不同的农作物生产系统。使用彩色塑料覆盖物主要集中在改变辐射预算和减少土壤水分流失上。此外，它还有助于调节土壤温度，水分利用效率，植物生长，产量，品质以及杂草和昆虫侵染。在这篇综述中，对彩色塑料覆盖物的知识和可能的应用进行了回顾和讨论，这种覆盖物可以改善土壤的物理特性，生长，产量和优质作物。还检查了有色塑料覆盖物在减轻农作物环境胁迫的有害影响方面的作用。还讨论了在有色塑料覆盖物的作用下导致作物产量提高的各种物理化学过程。综合结果表明，有色塑料覆盖物对土壤温度，水分和持水量的影响非常显着。黑色和蓝色塑料会增加土壤温度，而透明和白色则会降低土壤温度。在使用彩色塑料覆盖物时，记录到更多的水果，根，块茎和鳞茎的数量。同样，不同植物的TSS，维生素C和果汁百分比也显示出显着改善。还据报道，杂草侵染和病毒性疾病大大减少。有色的塑料覆盖物还具有一些负面影响，例如，降低某些植物的生长和产量，增加害虫侵扰，微塑料污染，土壤淤泥，土壤结构损失，降低土壤微生物活性。因此，使用有色塑料覆盖物需要密切检查与以下因素的相互作用：种植季节，根区温度，作物类型，害虫侵害和水分利用效率因素。