接下来发生的(或是已经存在的)是为了减轻繁重的采集工作，有意识地栽培野生植物。

What happened next (indeed, what was probably already happening) was the deliberate planting of wild seeds, in order to make the gathering process less onerous.

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而且我们认为这种植物很难栽培，所以只有很少量的猪笼草贩，包括我，会把泰国的猪笼草和其他野生植物一起贩售。

Moreover, we believe it's a kind of plant that is hard to cultivate. So there were only a few Nep. sellers including me. We all sold Thai Nep. together with other wild plants.

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根据“区系发生法”的引种理论，阐明了这些野生植物可以引种栽培的范围。

Based on the theory of floristic genesis, the potential range of these wild ornamental plants for introduced cultivation was discussed.

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