摘要
研究了不同供氮水平对一年生落叶松苗生物产量、株高、地茎的影响。结果表明,随着氮肥用量的增加,苗木吸氮量增加,N∶P∶K比值减少,生物学产量降低。以N0为参比,讨论了耕层中氮肥分配去向。
The results showed that with the increase of application rate of nitrogen fertilizer, the nitrogen uptake of seedling increased, the rate of N,P and K decreased and the biological yield reduced.The distribution of nitrogen fertilizer in topsoil was disscussed in comparison with ck. it was concluded that the application date of nitrogen should be controlled in range of 15 ̄20g/m 2.
出处
《吉林农业大学学报》
CAS
CSCD
1996年第2期51-53,共3页
Journal of Jilin Agricultural University
基金
吉林省林业厅资助
关键词
氮肥
落叶松苗
淋失量
施肥
application date
nitrogen
annotinous epinetle seedling
amount of leaching loss