N nutrient diagnosis N素营养诊断
N nutrient status 氮素营养状况
Content of N nutrient N养分含量
nutrient n 养分
n and k nutrient 氮钾营养
It shows that the yield improvement is mainly due to the soil nutrient amelioration (especially nitrogen nutrient) and the interaction of mutual supplement of N and P nutrient.
指出杨树刺槐混交林生产力提高主要是因为林地土壤养分（特别是N素养分）的极大改善及树种间N、P养分的互补。
The experimental results show that peat composed of rotton mosses and its preparation can promote the assimilation, utilization and rational distribution of nutrient (N, P and K).
实验结果表明，草炭与制剂可以促进养分的吸收利用与合理分配。
P fertilization increased N, P and K accumulation in tree biomass and nutrient use efficiency in wood and biomass production.
施P肥还增加了树木N、P和K的养分积累量，提高了上述养分的利用效率。
应用推荐