Based on the concept of seasonal grazing production systems and agro-grassland ecological systems, the new idea of key pasture has been formed.
基于季节畜牧业和草地农业生态系统的思想，提出了关键场的新概念；
The result of three years from 1997 to 1999 showed significant effect of post grazing residual and P level on seasonal and annual net production of the sown pasture under sheep rotational grazing.
三年试验结果表明，绵羊在轮牧下，产草量和磷肥对全年及各月牧草净生产具有显著影响。
The result of three years from 1997 to 1999 showed significant effect of post grazing residual and P level on seasonal and annual net production of the sown pasture under sheep rotational grazing.
三年试验结果表明，绵羊在轮牧下，产草量和磷肥对全年及各月牧草净生产具有显著影响。
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