The moisture content of soil is one important indicator of soil which plays an indispensable action in the production and irrigationofagriculture and research of basal theory.
土壤水分含量是土壤的一项重要指标，它在农业的生产、灌溉以及基础理论研究中具有重要作用。
2
The ensuing rapid expansion ofirrigationagriculture, especially from the 1950s onward, transformed the economy of the region.
随之而来的灌溉农业的迅速发展，特别是从20世纪50年代以来，改变了该区域的经济。
3
But this isn't a long paper, so are you going to need to pick a specific area of pre-modern agriculture, like irrigation or food crops of ancient Greece.