They sustained this dense settlement through raised field agriculture, a technique that improved drainage and recycled nutrients in the poor tropical soil.

高地农业技术可以改善贫瘠的热带土壤的排水和养分的循环利用。

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It is giving this detailed information to the International Centre for Tropical Agriculture, based in Colombia, so that it can build a database called the Digital Soil Map.

该机构正在将这些详细数据转给位于哥伦比亚的国际热带农业中心，以便该中心建立一个名为“数字土壤地图”的数据库。

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From the amazon jungle of inspiration, tropical rainforest theme colour included from soil and brown to bright orange and green sea blue wait for all sorts of color.

从亚马逊热带丛林中获得灵感，“热带雨林”主题色彩中包括了从土棕色和翠绿色到亮橘色和海风蓝色等各种色彩。

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Now, however, a new strain of the Race disease, the soil-born fungus Tropical Race Four, is making its way through the banana fields of the world, leaving devastation in its tracks.

FORBES: Banana Fungus Threatens World Crop

The Ehrlichs are correct that some trends deserve worry: soil erosion, degradation of tropical forests, fish depletion, the loss of farmland, to mention some of the most serious.

ECONOMIST: Green plus red-tape makes brown