垦殖

kěn zhí huāng dì

垦殖荒地

bring a vast area of wasteland under cultivation

kěn zhí chǎng

垦殖场

fields under reclamation

guò dù fàng mù hé cǎo yuán kěn zhí shì dǎo zhì cǎo dì tuì huà de zhǔ yào rén wéi yīn sù

过度放牧和草原垦殖是导致草地退化的主要人为因素。

Overgrazing and reclaiming cause the deterioration.

yún nán kāi méng kěn zhí de shǐ liào zhǔ yào bǎo cún zài yún nán shěng dàng àn guǎn

云南开蒙垦殖的史料主要保存在云南省档案馆。

The historical materials of Kaimeng reclamation in Yunnan Province are mainly kept in the archives of Yunnan Province.