... grassland agriculture 草地轮作法,草田轮作... natural grassland 天然草原 tropical grassland 热带草原 ...
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degeneration of natural grassland 天然草场退化
natural grassland type 天然草地类型
natural grassland herbage 天然草地牧草
improve natural grassland 改良天然草地
degraded natural grassland 退化天然草地
natural grassland resource 天然草地资源
natural grassland resources 天然草地资源
improving natural grassland 天然草地改良
developing natural grassland 改良天然草地
The effect of natural grassland improvement was analyzed in this study.
对改良三峡库区（云阳县）天然草地的效果进行了研究。
参考来源 - 重庆市云阳县天然草地改良效果分析 Effect of Natural Grassland Improvement in Yunyang County of ChongqingThe time lag of impact for woodland, unwoodland and natural grassland is 5 years, shrub 3 years. Of sparse forest land, improved grassland, artificial grassland lagging effect for 1 year.
对有林地、未成林造林地和天然草地的影响效应滞后5年;对灌木林地的影响效应滞后3年;对疏木林地、改良草地、人工草地的影响效应滞后1年。
参考来源 - 秦巴山区植被类型时空变化特征及驱动力研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Natural grassland in the west Jilin province is one of the best grassland in China.
吉林省西部的天然草场是中国的优质草场之一。
Grass industry: improvement of natural grassland and planting of grasses high in yield and quality on artificial grassland.
草业：培育改良天然草场，在人工草地引种高产优质牧。
This paper studied both the species distribution of poisonous plants and their poisons in Longdong Ziwulin Mountains natural grassland.
就陇东子午岭天然草地上对家畜有毒的植物种类分布及有毒成分等方面进行了调查，并提出了防治措施。
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