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研究了氮对黑麦草生长及内部组分的影响。结果表明 ,氮对黑麦草的生长有明显的影响 ,在一定氮素范围内随氮用量的增加而增加 ,而过多则反而降低 ;黑麦草体内氮的量及硝态氮的量随施氮量增加而增加 ,而磷、钾的量则随施氮量增加而降低。还初步研究了 pH值及离子强度对氮素效果的影响
The effects of nitrogen on the growth and internal components of ryegrass were studied. The results showed that nitrogen had a significant effect on the growth of ryegrass, increased with the increase of nitrogen application in a certain range of nitrogen content, but decreased with too much nitrogen. The amount of nitrogen and the amount of nitrate nitrogen in ryegrass increased with the increase of nitrogen application rate. The amount of phosphorus and potassium increased with the increase of nitrogen application rate. The effect of pH value and ionic strength on nitrogen effect was also preliminary studied