改良的草地 经过施肥灌溉排水除莠补播等单一或综合表面改良措施的天然草地
Improved grassland is a natural grassland that has undergone single or combined surface improvement measures such as fertilization, irrigation, drainage, weed control and reseeding
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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