The representative area of dry and hot valley of Jinsha River in Yunnan Province has a temperature condition of the northern tropical zone and a long dry season of more than half a year.
云南金沙江干热河谷典型区具有北热带温度条件和长达半年以上的干季时间，生态系统具有破坏容易恢复难的特点。
The Haidai region, which lies in the lower Yellow and Huai River Valley, was mainly a millet planting dry farming area in the early Neolithic period.
地处黄淮下游的海岱地区，新石器时代偏早时期是以种植粟类作物为主的旱作农业区。
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