农业科学
牧草
The relationship among soil nutrient contents, fertilization rate and herbage production were quantitatively analyzed and the nutrients cycling in grassland animal production systems was dynamically monitored.
主要内容如下: 在不施肥的情况下,牧草的产量都很低。
放牧权
生物学
草本植物
牧草
草本植物群
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