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。
Nitrate of soda may be sown on pasture that does not eat off.
可以把硝酸钠撒在牧草还没有吃光的草地上。
Nitrate of soda may be sown on pasture that does not eat off.
可以把硝酸钠撒在牧草还没有吃光的草地上。
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