黑龙江省西部草地土壤磷素状况及调控

The Status and Control of Phosphorus of the Grassland in the West Heilongjiang Province.

以安达为中心的黑龙江省西部草地 ,土壤全磷贮备普遍不足 ,供磷缺乏后劲 ;有效磷供给水平低 ,导致牧草磷营养缺乏。适量施入磷肥 ,可显著提高鲜草产量和磷营养含量 。

In the grassland of the west Heilongjiang province, the total phosphorous reserve in the soil is insufficient and the available phosphorous level is so low that phosphorous in the forage grass is deficient. If phosphorous fertilizers were applied properly, the yields of fresh forage and the content of total phosphorous were significantly increased. It was an effective way to control the phosphorous deficiency in the grassland.